SCONE Guide
SCONE Verification Notice
SCONE is a research-oriented code with a smaller user base than MCNP, OpenMC, or SERPENT. Our examples are intended as educational guidance. For authoritative syntax, physics options, and nuclear data requirements, consult the official documentation.
BEAVRS Benchmark in SCONE
BEAVRS Benchmark Disclaimer
The BEAVRS (Benchmark for Evaluation and Validation of Reactor Simulations) benchmark is developed and maintained by the Computational Reactor Physics Group (CRPG) at MIT. This page describes a SCONE translation derived from the official specification. It is not an official MIT/CRPG product.
For authoritative geometry, materials, operating conditions, and validation data, consult the MIT BEAVRS documentation. Our SCONE input may contain simplifications, transcription errors, or assumptions that deviate from the reference. Do not use this model for licensing, safety, or regulatory purposes without independent verification.
What is BEAVRS?
BEAVRS (Benchmark for Evaluation and Validation of Reactor Simulations) is a full-core PWR benchmark based on a Westinghouse 4-loop plant. It provides detailed geometry, material compositions, and operating conditions for Cycle 1, hot full power (HFP), with control rods withdrawn. The benchmark is widely used to validate Monte Carlo and deterministic transport codes.
- 193 fuel assemblies in a 17×17 lattice
- Three UO2 enrichments: 1.6%, 2.4%, 3.1% (and 3.2%, 3.4% in some assemblies)
- 975 ppm soluble boron in moderator
- 600 K operating temperature
- RPV, core barrel, baffle plates, neutron shield panels, grid spacers
SCONE Full-Core Input Structure
The scone_beavrs_clean.inp file in this repository is a cleaned SCONE translation of the BEAVRS specification. It uses block-style syntax with semicolon-terminated key-value pairs.
Physics and Tallies
plaintext
// BEAVRS PWR Benchmark - SCONE Full Core Model (Cycle 1)
// Westinghouse 4-loop PWR, 193 assemblies, 17x17 lattice
// Enrichments: 1.6/2.4/3.1% UO2, 975 ppm boron, HFP 600K, CRs out
// Reference: MIT BEAVRS Rev 2.0
type eigenPhysicsPackage;
pop 100000;
active 300;
inactive 200;
XSdata ce;
dataType ce;
collisionOperator { neutronCE { type neutronCEstd; } }
transportOperator { type transportOperatorDT; }
inactiveTally {}
activeTally {
fissionRate {
type collisionClerk;
response (fission);
fission { type macroResponse; MT -6; }
map {
type multiMap;
maps (xax yax);
xax { type spaceMap; axis x; grid lin; N 255; min -161.2773; max 161.2773; }
yax { type spaceMap; axis y; grid lin; N 255; min -161.2773; max 161.2773; }
}
}
}Geometry Overview
plaintext
geometry {
type geometryStd;
boundary (0 0 0 0 0 0);
graph { type shrunk; }
surfaces {
outerRPV { id 1; type zTruncCylinder; radius 241.3; origin (0.0 0.0 230.0); halfwidth 230; }
innerRPV { id 2; type zCylinder; radius 219.710; origin (0.0 0.0 0.0); }
innerRPVLiner { id 3; type zCylinder; radius 219.150; origin (0.0 0.0 0.0); }
outerBoundNS { id 4; type zCylinder; radius 201.630; origin (0.0 0.0 0.0); }
innerBoundNS { id 5; type zCylinder; radius 194.84; origin (0.0 0.0 0.0); }
outerCoreBarrel { id 6; type zCylinder; radius 193.675; origin (0.0 0.0 0.0); }
innerCoreBarrel { id 7; type zCylinder; radius 187.96; origin (0.0 0.0 0.0); }
// ... baffle planes, grid spacers, axial planes
}
cells {
pressureVessel { type simpleCell; id 7; surfaces (-1 2); filltype mat; material CarbonSteel; }
RPVLiner { type simpleCell; id 8; surfaces (-2 3); filltype mat; material StainlessSteel304; }
core { type simpleCell; id 17; surfaces (-5); filltype uni; universe 9999; }
// ... neutron shield, grid spacer, assembly cells
}
universes {
// pinUniverse for fuel (1.6/2.4/3.1%), guide tubes, instrument tubes
// latUniverse for 17x17 assembly, core lattice 17x17 assemblies
}
}The geometry block defines surfaces (RPV, barrel, baffle planes, grid spacers, axial planes), cells (pressure vessel, liner, water, core barrel, neutron shield, grid spacer overlays), and universes (pin types for fuel/guide/instrument tubes, assembly lattices, core lattice). The core cell fills with universe 9999, the main core lattice.
Complete Input File
The full scone_beavrs_clean.inp from this repository. Expand to view or copy the entire file.
scone_beavrs_clean.inp
// ===================================================================
// BEAVRS PWR Benchmark - SCONE Full Core Model (Cycle 1)
// Westinghouse 4-loop PWR, 193 assemblies, 17x17 lattice
// Enrichments: 1.6/2.4/3.1% UO2, 975 ppm boron, HFP 600K, CRs out
// Reference: MIT BEAVRS Rev 2.0
// ===================================================================
type eigenPhysicsPackage;
pop 100000;
active 300;
inactive 200;
XSdata ce;
dataType ce;
collisionOperator { neutronCE { type neutronCEstd; } }
transportOperator { type transportOperatorDT; }
inactiveTally {}
activeTally {
fissionRate {
type collisionClerk;
response (fission);
fission { type macroResponse; MT -6; }
map {
type multiMap;
maps (xax yax);
xax { type spaceMap; axis x; grid lin; N 255; min -161.2773; max 161.2773; }
yax { type spaceMap; axis y; grid lin; N 255; min -161.2773; max 161.2773; }
}
}
}
// ===================================================================
// GEOMETRY
// ===================================================================
geometry {
type geometryStd;
boundary (0 0 0 0 0 0);
graph { type shrunk; }
// -----------------------------------------------------------------
// Surfaces
// -----------------------------------------------------------------
surfaces {
// RPV and RPV liner
outerRPV { id 1; type zTruncCylinder; radius 241.3; origin (0.0 0.0 230.0); halfwidth 230; }
innerRPV { id 2; type zCylinder; radius 219.710; origin (0.0 0.0 0.0); }
innerRPVLiner { id 3; type zCylinder; radius 219.150; origin (0.0 0.0 0.0); }
// Neutron shield boundaries
outerBoundNS { id 4; type zCylinder; radius 201.630; origin (0.0 0.0 0.0); }
innerBoundNS { id 5; type zCylinder; radius 194.84; origin (0.0 0.0 0.0); }
// Core barrel
outerCoreBarrel { id 6; type zCylinder; radius 193.675; origin (0.0 0.0 0.0); }
innerCoreBarrel { id 7; type zCylinder; radius 187.96; origin (0.0 0.0 0.0); }
// Neutron shield panel bounding planes (octant symmetry)
P1 { id 8; type plane; coeffs (-0.48480962025 0.87461970714 0.0 0.0); }
P2 { id 9; type plane; coeffs (-0.87461970714 0.48480962025 0.0 0.0); }
P3 { id 10; type plane; coeffs (-0.87461970714 -0.48480962025 0.0 0.0); }
P4 { id 11; type plane; coeffs (-0.48480962025 -0.87461970714 0.0 0.0); }
// Baffle plates (close = core side, away = reflector side)
rightClose { id 50; type plane; coeffs ( 1.0 0.0 0.0 8.36662); }
rightAway { id 51; type plane; coeffs ( 1.0 0.0 0.0 10.58912); }
leftClose { id 60; type plane; coeffs (-1.0 0.0 0.0 8.36662); }
leftAway { id 61; type plane; coeffs (-1.0 0.0 0.0 10.58912); }
bottomClose { id 70; type plane; coeffs ( 0.0 -1.0 0.0 8.36662); }
bottomAway { id 71; type plane; coeffs ( 0.0 -1.0 0.0 10.58912); }
topClose { id 80; type plane; coeffs ( 0.0 1.0 0.0 8.36662); }
topAway { id 81; type plane; coeffs ( 0.0 1.0 0.0 10.58912); }
// Grid spacer surfaces (thick and thin Inconel sleeves)
pinThickGridInner { id 90; type zSquareCylinder; origin (0.0 0.0 0.0); halfwidth (0.61015 0.61015 0.0); }
pinThickGridOuter { id 91; type zSquareCylinder; origin (0.0 0.0 0.0); halfwidth (0.62992 0.62992 0.0); }
pinThinGridInner { id 92; type zSquareCylinder; origin (0.0 0.0 0.0); halfwidth (0.61049 0.61049 0.0); }
pinThinGridOuter { id 93; type zSquareCylinder; origin (0.0 0.0 0.0); halfwidth (0.62992 0.62992 0.0); }
// Axial planes (z-elevations from bottom to top of model)
plane460 { id 120; type plane; coeffs (0.0 0.0 1.0 460.0); }
plane431876 { id 121; type plane; coeffs (0.0 0.0 1.0 431.876); }
plane423049 { id 122; type plane; coeffs (0.0 0.0 1.0 423.049); }
plane421532 { id 123; type plane; coeffs (0.0 0.0 1.0 421.532); }
plane419704 { id 124; type plane; coeffs (0.0 0.0 1.0 419.704); }
plane417164 { id 125; type plane; coeffs (0.0 0.0 1.0 417.164); }
plane415164 { id 126; type plane; coeffs (0.0 0.0 1.0 415.164); }
plane411806 { id 127; type plane; coeffs (0.0 0.0 1.0 411.806); }
plane401238 { id 128; type plane; coeffs (0.0 0.0 1.0 401.238); }
plane364725 { id 129; type plane; coeffs (0.0 0.0 1.0 364.725); }
plane35901 { id 130; type plane; coeffs (0.0 0.0 1.0 359.01); }
plane312528 { id 131; type plane; coeffs (0.0 0.0 1.0 312.528); }
plane306813 { id 132; type plane; coeffs (0.0 0.0 1.0 306.813); }
plane260331 { id 133; type plane; coeffs (0.0 0.0 1.0 260.331); }
plane254616 { id 134; type plane; coeffs (0.0 0.0 1.0 254.616); }
plane208134 { id 135; type plane; coeffs (0.0 0.0 1.0 208.134); }
plane202419 { id 136; type plane; coeffs (0.0 0.0 1.0 202.419); }
plane155937 { id 137; type plane; coeffs (0.0 0.0 1.0 155.937); }
plane150222 { id 138; type plane; coeffs (0.0 0.0 1.0 150.222); }
plane10374 { id 139; type plane; coeffs (0.0 0.0 1.0 103.74); }
plane98025 { id 140; type plane; coeffs (0.0 0.0 1.0 98.025); }
plane40558 { id 141; type plane; coeffs (0.0 0.0 1.0 40.558); }
plane4052 { id 142; type plane; coeffs (0.0 0.0 1.0 40.52); }
plane39958 { id 143; type plane; coeffs (0.0 0.0 1.0 39.958); }
plane3866 { id 144; type plane; coeffs (0.0 0.0 1.0 38.66); }
plane371621 { id 145; type plane; coeffs (0.0 0.0 1.0 37.1621); }
plane36748 { id 146; type plane; coeffs (0.0 0.0 1.0 36.748); }
plane35 { id 147; type plane; coeffs (0.0 0.0 1.0 35.0); }
plane20 { id 148; type plane; coeffs (0.0 0.0 1.0 20.0); }
plane0 { id 149; type plane; coeffs (0.0 0.0 1.0 0.0); }
// Additional axial planes for control rod and BA geometry
plane402 { id 402; type plane; coeffs (0.0 0.0 1.0 402.508); }
plane403 { id 403; type plane; coeffs (0.0 0.0 1.0 403.778); }
plane1430 { id 1430; type plane; coeffs (0.0 0.0 1.0 143.428); }
plane41 { id 41; type plane; coeffs (0.0 0.0 1.0 41.828); }
}
// -----------------------------------------------------------------
// Cells
// -----------------------------------------------------------------
cells {
// --- RPV structure and core barrel ---
pressureVessel { type simpleCell; id 7; surfaces (-1 2); filltype mat; material CarbonSteel; }
RPVLiner { type simpleCell; id 8; surfaces (-2 3); filltype mat; material StainlessSteel304; }
outerWater1 { type simpleCell; id 9; surfaces (-3 4); filltype mat; material Water; }
outerWater2 { type simpleCell; id 15; surfaces (-5 6); filltype mat; material Water; }
coreBarrel { type simpleCell; id 16; surfaces (-6 7); filltype mat; material StainlessSteel304; }
core { type simpleCell; id 17; surfaces (-5); filltype uni; universe 9999; }
// --- Neutron shield panels (4 octant segments + water fill) ---
NS1 { type simpleCell; id 10; surfaces (-4 5 -8 9); filltype mat; material StainlessSteel304; }
NS2 { type simpleCell; id 11; surfaces (-4 5 8 -9); filltype mat; material StainlessSteel304; }
NS3 { type simpleCell; id 12; surfaces (-4 5 -10 11); filltype mat; material StainlessSteel304; }
NS4 { type simpleCell; id 13; surfaces (-4 5 10 -11); filltype mat; material StainlessSteel304; }
outerWaterSeg1 { type simpleCell; id 14; surfaces (-4 5); filltype mat; material Water; }
// --- Grid spacer cells ---
thickGrid { type simpleCell; id 55; surfaces (90); filltype mat; material Inconel; }
thinGrid { type simpleCell; id 56; surfaces (92); filltype mat; material Inconel; }
// Thick grid overlay: pin inside thick grid envelope
gridThick24 { type simpleCell; id 1240; surfaces (-90); filltype uni; universe 24000; }
gridThickGT { type simpleCell; id 112; surfaces (-90); filltype uni; universe 12000; }
gridThickBA { type simpleCell; id 110; surfaces (-90); filltype uni; universe 1000; }
gridThick31 { type simpleCell; id 1310; surfaces (-90); filltype uni; universe 31000; }
gridThick16 { type simpleCell; id 1166; surfaces (-90); filltype uni; universe 16000; }
gridThickIT { type simpleCell; id 114; surfaces (-90); filltype uni; universe 14000; }
gridThickDP { type simpleCell; id 230; surfaces (-90); filltype uni; universe 1010; }
gridThickPlen { type simpleCell; id 232; surfaces (-90); filltype uni; universe 1008; }
gridThickSSGT { type simpleCell; id 234; surfaces (-90); filltype uni; universe 1023; }
gridThickSSDP { type simpleCell; id 236; surfaces (-90); filltype uni; universe 1024; }
gridThickBPP { type simpleCell; id 238; surfaces (-90); filltype uni; universe 1012; }
// Thin grid overlay: pin inside thin grid envelope
gridThin24 { type simpleCell; id 2240; surfaces (-92); filltype uni; universe 24000; }
gridThinGT { type simpleCell; id 2120; surfaces (-92); filltype uni; universe 12000; }
gridThinBA { type simpleCell; id 2100; surfaces (-92); filltype uni; universe 1000; }
gridThin31 { type simpleCell; id 2310; surfaces (-92); filltype uni; universe 31000; }
gridThin16 { type simpleCell; id 2160; surfaces (-92); filltype uni; universe 16000; }
gridThinIT { type simpleCell; id 2140; surfaces (-92); filltype uni; universe 14000; }
gridThinDP { type simpleCell; id 240; surfaces (-92); filltype uni; universe 1010; }
gridThinPlen { type simpleCell; id 233; surfaces (-92); filltype uni; universe 1008; }
gridThinSSGT { type simpleCell; id 235; surfaces (-92); filltype uni; universe 1023; }
gridThinSSDP { type simpleCell; id 237; surfaces (-92); filltype uni; universe 1024; }
gridThinBPP { type simpleCell; id 239; surfaces (-92); filltype uni; universe 1012; }
// --- 3.1% UO2 fuel pin axial layers (top to bottom) ---
31FP460 { type simpleCell; id 100; surfaces (-120 121); filltype uni; universe 1001; }
31FP431 { type simpleCell; id 101; surfaces (-121 122); filltype uni; universe 1003; }
31FP423 { type simpleCell; id 102; surfaces (-122 124); filltype uni; universe 1001; }
31FP419 { type simpleCell; id 103; surfaces (-124 125); filltype uni; universe 1006; }
31FP417 { type simpleCell; id 104; surfaces (-125 126); filltype uni; universe 1008; }
31FP415 { type simpleCell; id 105; surfaces (-126 127); filltype uni; universe 1017; }
31FP411 { type simpleCell; id 106; surfaces (-127 402); filltype uni; universe 1008; }
31FP402 { type simpleCell; id 307; surfaces (-402 129); filltype uni; universe 31000; }
31FP364 { type simpleCell; id 308; surfaces (-129 130); filltype uni; universe 1131; }
31FP359 { type simpleCell; id 309; surfaces (-130 131); filltype uni; universe 31000; }
31FP312 { type simpleCell; id 310; surfaces (-131 132); filltype uni; universe 1131; }
31FP306 { type simpleCell; id 311; surfaces (-132 133); filltype uni; universe 31000; }
31FP260 { type simpleCell; id 312; surfaces (-133 134); filltype uni; universe 1131; }
31FP254 { type simpleCell; id 313; surfaces (-134 135); filltype uni; universe 31000; }
31FP208 { type simpleCell; id 314; surfaces (-135 136); filltype uni; universe 1131; }
31FP202 { type simpleCell; id 315; surfaces (-136 137); filltype uni; universe 31000; }
31FP155 { type simpleCell; id 316; surfaces (-137 138); filltype uni; universe 1131; }
31FP150 { type simpleCell; id 317; surfaces (-138 139); filltype uni; universe 31000; }
31FP103 { type simpleCell; id 318; surfaces (-139 140); filltype uni; universe 1131; }
31FP98 { type simpleCell; id 319; surfaces (-140 142); filltype uni; universe 31000; }
31FP4052 { type simpleCell; id 320; surfaces (-142 145); filltype uni; universe 1131; }
31FP37 { type simpleCell; id 321; surfaces (-145 146); filltype uni; universe 31000; }
31FP36 { type simpleCell; id 322; surfaces (-146 147); filltype uni; universe 1006; }
31FP35 { type simpleCell; id 323; surfaces (-147 148); filltype uni; universe 1004; }
31FP20 { type simpleCell; id 324; surfaces (-148 149); filltype uni; universe 1001; }
// --- 2.4% UO2 fuel pin axial layers (top to bottom) ---
24FP460 { type simpleCell; id 325; surfaces (-120 121); filltype uni; universe 1001; }
24FP431 { type simpleCell; id 326; surfaces (-121 122); filltype uni; universe 1003; }
24FP423 { type simpleCell; id 327; surfaces (-122 124); filltype uni; universe 1001; }
24FP419 { type simpleCell; id 328; surfaces (-124 125); filltype uni; universe 1006; }
24FP417 { type simpleCell; id 329; surfaces (-125 126); filltype uni; universe 1008; }
24FP415 { type simpleCell; id 330; surfaces (-126 127); filltype uni; universe 1017; }
24FP411 { type simpleCell; id 331; surfaces (-127 402); filltype uni; universe 1008; }
24FP402 { type simpleCell; id 332; surfaces (-402 129); filltype uni; universe 24000; }
24FP364 { type simpleCell; id 333; surfaces (-129 130); filltype uni; universe 1124; }
24FP359 { type simpleCell; id 334; surfaces (-130 131); filltype uni; universe 24000; }
24FP312 { type simpleCell; id 335; surfaces (-131 132); filltype uni; universe 1124; }
24FP306 { type simpleCell; id 336; surfaces (-132 133); filltype uni; universe 24000; }
24FP260 { type simpleCell; id 337; surfaces (-133 134); filltype uni; universe 1124; }
24FP254 { type simpleCell; id 338; surfaces (-134 135); filltype uni; universe 24000; }
24FP208 { type simpleCell; id 3380; surfaces (-135 136); filltype uni; universe 1124; }
24FP202 { type simpleCell; id 339; surfaces (-136 137); filltype uni; universe 24000; }
24FP155 { type simpleCell; id 340; surfaces (-137 138); filltype uni; universe 1124; }
24FP150 { type simpleCell; id 341; surfaces (-138 139); filltype uni; universe 24000; }
24FP103 { type simpleCell; id 342; surfaces (-139 140); filltype uni; universe 1124; }
24FP98 { type simpleCell; id 343; surfaces (-140 142); filltype uni; universe 24000; }
24FP4052 { type simpleCell; id 344; surfaces (-142 145); filltype uni; universe 1124; }
24FP37 { type simpleCell; id 345; surfaces (-145 146); filltype uni; universe 24000; }
24FP36 { type simpleCell; id 346; surfaces (-146 147); filltype uni; universe 1006; }
24FP35 { type simpleCell; id 347; surfaces (-147 148); filltype uni; universe 1004; }
24FP20 { type simpleCell; id 348; surfaces (-148 149); filltype uni; universe 1001; }
// --- 1.6% UO2 fuel pin axial layers (top to bottom) ---
16FP460 { type simpleCell; id 349; surfaces (-120 121); filltype uni; universe 1001; }
16FP431 { type simpleCell; id 350; surfaces (-121 122); filltype uni; universe 1003; }
16FP423 { type simpleCell; id 351; surfaces (-122 124); filltype uni; universe 1001; }
16FP419 { type simpleCell; id 352; surfaces (-124 125); filltype uni; universe 1006; }
16FP417 { type simpleCell; id 353; surfaces (-125 126); filltype uni; universe 1008; }
16FP415 { type simpleCell; id 354; surfaces (-126 127); filltype uni; universe 1017; }
16FP411 { type simpleCell; id 355; surfaces (-127 402); filltype uni; universe 1008; }
16FP402 { type simpleCell; id 356; surfaces (-402 129); filltype uni; universe 16000; }
16FP364 { type simpleCell; id 357; surfaces (-129 130); filltype uni; universe 1116; }
16FP359 { type simpleCell; id 358; surfaces (-130 131); filltype uni; universe 16000; }
16FP312 { type simpleCell; id 359; surfaces (-131 132); filltype uni; universe 1116; }
16FP306 { type simpleCell; id 360; surfaces (-132 133); filltype uni; universe 16000; }
16FP260 { type simpleCell; id 361; surfaces (-133 134); filltype uni; universe 1116; }
16FP254 { type simpleCell; id 362; surfaces (-134 135); filltype uni; universe 16000; }
16FP208 { type simpleCell; id 363; surfaces (-135 136); filltype uni; universe 1116; }
16FP202 { type simpleCell; id 364; surfaces (-136 137); filltype uni; universe 16000; }
16FP155 { type simpleCell; id 365; surfaces (-137 138); filltype uni; universe 1116; }
16FP150 { type simpleCell; id 366; surfaces (-138 139); filltype uni; universe 16000; }
16FP103 { type simpleCell; id 367; surfaces (-139 140); filltype uni; universe 1116; }
16FP98 { type simpleCell; id 368; surfaces (-140 142); filltype uni; universe 16000; }
16FP4052 { type simpleCell; id 369; surfaces (-142 145); filltype uni; universe 1116; }
16FP37 { type simpleCell; id 370; surfaces (-145 146); filltype uni; universe 16000; }
16FP36 { type simpleCell; id 371; surfaces (-146 147); filltype uni; universe 1006; }
16FP35 { type simpleCell; id 372; surfaces (-147 148); filltype uni; universe 1004; }
16FP20 { type simpleCell; id 373; surfaces (-148 149); filltype uni; universe 1001; }
// --- Guide tube axial layers (top to bottom) ---
GT460 { type simpleCell; id 374; surfaces (-120 121); filltype uni; universe 1001; }
GT431 { type simpleCell; id 375; surfaces (-121 122); filltype uni; universe 1005; }
GT423 { type simpleCell; id 376; surfaces (-122 126); filltype uni; universe 12000; }
GT415 { type simpleCell; id 377; surfaces (-126 127); filltype uni; universe 1112; }
GT411 { type simpleCell; id 378; surfaces (-127 129); filltype uni; universe 12000; }
GT364 { type simpleCell; id 379; surfaces (-129 130); filltype uni; universe 1112; }
GT359 { type simpleCell; id 380; surfaces (-130 131); filltype uni; universe 12000; }
GT312 { type simpleCell; id 381; surfaces (-131 132); filltype uni; universe 1112; }
GT306 { type simpleCell; id 382; surfaces (-132 133); filltype uni; universe 12000; }
GT260 { type simpleCell; id 383; surfaces (-133 134); filltype uni; universe 1112; }
GT254 { type simpleCell; id 384; surfaces (-134 135); filltype uni; universe 12000; }
GT208 { type simpleCell; id 385; surfaces (-135 136); filltype uni; universe 1112; }
GT202 { type simpleCell; id 386; surfaces (-136 137); filltype uni; universe 12000; }
GT155 { type simpleCell; id 387; surfaces (-137 138); filltype uni; universe 1112; }
GT150 { type simpleCell; id 388; surfaces (-138 139); filltype uni; universe 12000; }
GT103 { type simpleCell; id 389; surfaces (-139 140); filltype uni; universe 1112; }
GT98 { type simpleCell; id 390; surfaces (-140 142); filltype uni; universe 1010; }
GT4052 { type simpleCell; id 391; surfaces (-142 143); filltype uni; universe 12000; }
GT39 { type simpleCell; id 392; surfaces (-143 145); filltype uni; universe 1019; }
GT37 { type simpleCell; id 393; surfaces (-145 147); filltype uni; universe 1010; }
GT35 { type simpleCell; id 394; surfaces (-147 148); filltype uni; universe 1005; }
GT20 { type simpleCell; id 395; surfaces (-148 149); filltype uni; universe 1001; }
// --- Instrument tube axial layers (top to bottom) ---
IT460 { type simpleCell; id 396; surfaces (-120 122); filltype uni; universe 1001; }
IT423 { type simpleCell; id 397; surfaces (-122 126); filltype uni; universe 14000; }
IT415 { type simpleCell; id 398; surfaces (-126 127); filltype uni; universe 1114; }
IT411 { type simpleCell; id 399; surfaces (-127 129); filltype uni; universe 14000; }
IT364 { type simpleCell; id 406; surfaces (-129 130); filltype uni; universe 1114; }
IT359 { type simpleCell; id 407; surfaces (-130 131); filltype uni; universe 14000; }
IT312 { type simpleCell; id 408; surfaces (-131 132); filltype uni; universe 1114; }
IT306 { type simpleCell; id 409; surfaces (-132 133); filltype uni; universe 14000; }
IT260 { type simpleCell; id 410; surfaces (-133 134); filltype uni; universe 1114; }
IT254 { type simpleCell; id 411; surfaces (-134 135); filltype uni; universe 14000; }
IT208 { type simpleCell; id 412; surfaces (-135 136); filltype uni; universe 1114; }
IT202 { type simpleCell; id 413; surfaces (-136 137); filltype uni; universe 14000; }
IT155 { type simpleCell; id 414; surfaces (-137 138); filltype uni; universe 1114; }
IT150 { type simpleCell; id 415; surfaces (-138 139); filltype uni; universe 14000; }
IT103 { type simpleCell; id 416; surfaces (-139 140); filltype uni; universe 1114; }
IT98 { type simpleCell; id 417; surfaces (-140 142); filltype uni; universe 14000; }
IT40 { type simpleCell; id 418; surfaces (-142 145); filltype uni; universe 1114; }
IT37 { type simpleCell; id 419; surfaces (-145 147); filltype uni; universe 14000; }
IT35 { type simpleCell; id 420; surfaces (-147 148); filltype uni; universe 1005; }
IT20 { type simpleCell; id 421; surfaces (-148); filltype uni; universe 1011; }
// --- Burnable absorber axial layers (top to bottom) ---
BA460 { type simpleCell; id 422; surfaces (-120 121); filltype uni; universe 1001; }
BA431 { type simpleCell; id 423; surfaces (-121 122); filltype uni; universe 1002; }
BA423 { type simpleCell; id 424; surfaces (-122 123); filltype uni; universe 1023; }
BA421 { type simpleCell; id 425; surfaces (-123 126); filltype uni; universe 1012; }
BA415 { type simpleCell; id 426; surfaces (-126 127); filltype uni; universe 1027; }
BA411 { type simpleCell; id 427; surfaces (-127 128); filltype uni; universe 1012; }
BA401 { type simpleCell; id 428; surfaces (-128 129); filltype uni; universe 1000; }
BA364 { type simpleCell; id 429; surfaces (-129 130); filltype uni; universe 1110; }
BA359 { type simpleCell; id 430; surfaces (-130 131); filltype uni; universe 1000; }
BA312 { type simpleCell; id 431; surfaces (-131 132); filltype uni; universe 1110; }
BA306 { type simpleCell; id 432; surfaces (-132 133); filltype uni; universe 1000; }
BA260 { type simpleCell; id 433; surfaces (-133 134); filltype uni; universe 1110; }
BA254 { type simpleCell; id 434; surfaces (-134 135); filltype uni; universe 1000; }
BA208 { type simpleCell; id 435; surfaces (-135 136); filltype uni; universe 1110; }
BA202 { type simpleCell; id 436; surfaces (-136 137); filltype uni; universe 1000; }
BA155 { type simpleCell; id 437; surfaces (-137 138); filltype uni; universe 1110; }
BA150 { type simpleCell; id 438; surfaces (-138 139); filltype uni; universe 1000; }
BA103 { type simpleCell; id 439; surfaces (-139 140); filltype uni; universe 1110; }
BA98 { type simpleCell; id 440; surfaces (-140 141); filltype uni; universe 1000; }
BA4055 { type simpleCell; id 441; surfaces (-141 142); filltype uni; universe 1023; }
BA4052 { type simpleCell; id 442; surfaces (-142 143); filltype uni; universe 1021; }
BA39 { type simpleCell; id 443; surfaces (-143 144); filltype uni; universe 1025; }
BA38 { type simpleCell; id 444; surfaces (-144 145); filltype uni; universe 1019; }
BA37 { type simpleCell; id 445; surfaces (-145 147); filltype uni; universe 1010; }
BA35 { type simpleCell; id 446; surfaces (-147 148); filltype uni; universe 1005; }
BA20 { type simpleCell; id 447; surfaces (-148 149); filltype uni; universe 1001; }
// --- Control rod axial layers (top to bottom, rods fully withdrawn) ---
CR460 { type simpleCell; id 448; surfaces (-120 121); filltype uni; universe 1002; }
CR415 { type simpleCell; id 449; surfaces (-126 403); filltype uni; universe 1013; }
CR403 { type simpleCell; id 450; surfaces (-403 402); filltype uni; universe 1015; }
CR402 { type simpleCell; id 451; surfaces (-402 1430); filltype uni; universe 1013; }
CR143 { type simpleCell; id 452; surfaces (-1430 41); filltype uni; universe 1014; }
CR41 { type simpleCell; id 453; surfaces (-41 143); filltype uni; universe 1002; }
CR39 { type simpleCell; id 454; surfaces (-143 147); filltype uni; universe 1001; }
CR35 { type simpleCell; id 455; surfaces (-147 148); filltype uni; universe 1005; }
CR20 { type simpleCell; id 456; surfaces (-148 149); filltype uni; universe 1001; }
// --- Baffle cells (4 sides: left/right/top/bottom) ---
outsideLeftBaffle { type simpleCell; id 52; surfaces (-50); filltype mat; material Water; }
leftBaffle { type simpleCell; id 53; surfaces (50 -51); filltype mat; material StainlessSteel304; }
insideLeftBaffle { type simpleCell; id 54; surfaces (51); filltype mat; material Water; }
outsideRightBaffle { type simpleCell; id 62; surfaces (-60); filltype mat; material Water; }
rightBaffle { type simpleCell; id 63; surfaces (60 -61); filltype mat; material StainlessSteel304; }
insideRightBaffle { type simpleCell; id 64; surfaces (61); filltype mat; material Water; }
outsideTopBaffle { type simpleCell; id 72; surfaces (-70); filltype mat; material Water; }
topBaffle { type simpleCell; id 73; surfaces (70 -71); filltype mat; material StainlessSteel304; }
insideTopBaffle { type simpleCell; id 74; surfaces (71); filltype mat; material Water; }
outsideBottomBaffle { type simpleCell; id 82; surfaces (-80); filltype mat; material Water; }
bottomBaffle { type simpleCell; id 83; surfaces (80 -81); filltype mat; material StainlessSteel304; }
insideBottomBaffle { type simpleCell; id 84; surfaces (81); filltype mat; material Water; }
// --- Corner baffle cells (top-left) ---
topLeftCornerBaffle1 { type simpleCell; id 201; surfaces (60 -61 -81); filltype mat; material StainlessSteel304; }
topLeftCornerBaffle2 { type simpleCell; id 202; surfaces (80 -81 -60); filltype mat; material StainlessSteel304; }
topLeftCornerGap1 { type simpleCell; id 203; surfaces (81); filltype mat; material Water; }
topLeftCornerGap2 { type simpleCell; id 204; surfaces (61); filltype mat; material Water; }
topLeftMajorGap { type simpleCell; id 205; surfaces (-80 -60); filltype mat; material Water; }
// --- Corner baffle cells (top-right) ---
topRightCornerBaffle1 { type simpleCell; id 301; surfaces (-81 50 -51); filltype mat; material StainlessSteel304; }
topRightCornerBaffle2 { type simpleCell; id 302; surfaces (-50 80 -81); filltype mat; material StainlessSteel304; }
topRightCornerGap1 { type simpleCell; id 303; surfaces (81); filltype mat; material Water; }
topRightCornerGap2 { type simpleCell; id 304; surfaces (51); filltype mat; material Water; }
topRightMajorGap { type simpleCell; id 305; surfaces (-80 -50); filltype mat; material Water; }
// --- Corner baffle cells (bottom-left) ---
bottomLeftCornerBaffle1 { type simpleCell; id 401; surfaces (-71 60 -61); filltype mat; material StainlessSteel304; }
bottomLeftCornerBaffle2 { type simpleCell; id 402; surfaces (-71 70 -60); filltype mat; material StainlessSteel304; }
bottomLeftCornerGap1 { type simpleCell; id 403; surfaces (71); filltype mat; material Water; }
bottomLeftCornerGap2 { type simpleCell; id 404; surfaces (61); filltype mat; material Water; }
bottomLeftMajorGap { type simpleCell; id 405; surfaces (-70 -60); filltype mat; material Water; }
// --- Corner baffle cells (bottom-right) ---
bottomRightCornerBaffle1 { type simpleCell; id 501; surfaces (-51 50 -71); filltype mat; material StainlessSteel304; }
bottomRightCornerBaffle2 { type simpleCell; id 502; surfaces (-71 70 -50); filltype mat; material StainlessSteel304; }
bottomRightCornerGap1 { type simpleCell; id 503; surfaces (51); filltype mat; material Water; }
bottomRightCornerGap2 { type simpleCell; id 504; surfaces (71); filltype mat; material Water; }
bottomRightMajorGap { type simpleCell; id 505; surfaces (-50 -70); filltype mat; material Water; }
// --- Square corner cells (top-left) ---
TLSG1 { type simpleCell; id 601; surfaces (-80 -60); filltype mat; material Water; }
TLSG2 { type simpleCell; id 602; surfaces (-80 60); filltype mat; material Water; }
TLSG3 { type simpleCell; id 603; surfaces (80 -60); filltype mat; material Water; }
topLeftSquare { type simpleCell; id 604; surfaces (80 60); filltype mat; material StainlessSteel304; }
// --- Square corner cells (top-right) ---
TRSG1 { type simpleCell; id 701; surfaces (-80 50); filltype mat; material Water; }
TRSG2 { type simpleCell; id 702; surfaces (-80 -50); filltype mat; material Water; }
TRSG3 { type simpleCell; id 703; surfaces (80 -50); filltype mat; material Water; }
topRightSquare { type simpleCell; id 704; surfaces (80 50); filltype mat; material StainlessSteel304; }
// --- Square corner cells (bottom-left) ---
BLSG1 { type simpleCell; id 801; surfaces (70 -60); filltype mat; material Water; }
BLSG2 { type simpleCell; id 802; surfaces (-70 60); filltype mat; material Water; }
BLSG3 { type simpleCell; id 803; surfaces (-70 -60); filltype mat; material Water; }
bottomLeftSquare { type simpleCell; id 804; surfaces (70 60); filltype mat; material StainlessSteel304; }
// --- Square corner cells (bottom-right) ---
BRSG1 { type simpleCell; id 901; surfaces (-70 50); filltype mat; material Water; }
BRSG2 { type simpleCell; id 902; surfaces (70 -50); filltype mat; material Water; }
BRSG3 { type simpleCell; id 903; surfaces (-70 -50); filltype mat; material Water; }
bottomRightSquare { type simpleCell; id 904; surfaces (70 50); filltype mat; material StainlessSteel304; }
}
// -----------------------------------------------------------------
// Universes
// -----------------------------------------------------------------
universes {
root { id 1; type rootUniverse; border 1; fill u<8888>; }
// ===============================================================
// Pin Universes
// ===============================================================
// Fuel pins (pellet / gap / clad / coolant)
pinFuel16 { id 16000; type pinUniverse;
radii (0.39218 0.40005 0.45720 0.0);
fills (UO2-16 Helium Zircaloy Water); }
pinFuel24 { id 24000; type pinUniverse;
radii (0.39218 0.40005 0.45720 0.0);
fills (UO2-24 Helium Zircaloy Water); }
pinFuel31 { id 31000; type pinUniverse;
radii (0.39218 0.40005 0.45720 0.0);
fills (UO2-31 Helium Zircaloy Water); }
pinFuel32 { id 32000; type pinUniverse;
radii (0.39218 0.40005 0.45720 0.0);
fills (UO2-32 Helium Zircaloy Water); }
pinFuel34 { id 34000; type pinUniverse;
radii (0.39218 0.40005 0.45720 0.0);
fills (UO2-34 Helium Zircaloy Water); }
// Guide tube (inner water / Zircaloy tube / outer water)
pinGuideTube { id 12000; type pinUniverse;
radii (0.56134 0.60198 0.0);
fills (Water Zircaloy Water); }
// Instrument tube (air / Zr inner tube / water / Zr guide tube / water)
pinInstrumentTube { id 14000; type pinUniverse;
radii (0.43688 0.48387 0.56134 0.60198 0.0);
fills (Air Zircaloy Water Zircaloy Water); }
// Burnable absorber pin above dashpot (full radial detail)
pinBPAboveDashpot { id 1000; type pinUniverse;
radii (0.21400 0.23051 0.24130 0.42672 0.43688 0.48387 0.56134 0.60198 0.0);
fills (Air SS304 Helium BorosilicateGlass Helium SS304 Water Zircaloy Water); }
// Structural and water-fill pins
pinWater { id 1001; type pinUniverse; radii (0.0); fills (Water); }
pinSteel { id 1002; type pinUniverse; radii (0.45720 0.0); fills (StainlessSteel304 Water); }
pinNozzleSteel { id 1003; type pinUniverse; radii (0.45720 0.0); fills (StainlessSteel304 Water); }
pinSupportPlateSS { id 1004; type pinUniverse; radii (0.45720 0.0); fills (SupportPlateSS Water); }
pinSupportPlateBW { id 1005; type pinUniverse; radii (0.45720 0.0); fills (SupportPlateBW Water); }
pinZircaloy { id 1006; type pinUniverse; radii (0.45720 0.0); fills (Zircaloy Water); }
// Upper fuel rod plenum (spring / gap / clad / water)
pinUpperFuelPlenum { id 1008; type pinUniverse;
radii (0.06459 0.40005 0.45720 0.0);
fills (Inconel Helium Zircaloy Water); }
// Empty guide tube variants
pinEmptyGTaboveDashpot { id 1009; type pinUniverse;
radii (0.56134 0.60198 0.0);
fills (Water Zircaloy Water); }
pinEmptyGTatDashpot { id 1010; type pinUniverse;
radii (0.50419 0.54610 0.0);
fills (Water Zircaloy Water); }
// Bare instrument thimble (below lower support plate)
pinBareInstrumentThimble { id 1011; type pinUniverse;
radii (0.43688 0.48387 0.0);
fills (Air Zircaloy Water); }
// BA plenum geometry (complex multi-layer)
pinBPPlenumGeometry { id 1012; type pinUniverse;
radii (0.21400 0.23051 0.43688 0.48387 0.50419 0.54610 0.0);
fills (Air SS304 Helium SS304 Water Zircaloy Water); }
// SS-filled guide tube and dashpot
SSinGuideTube { id 1023; type pinUniverse;
radii (0.56134 0.60198 0.0);
fills (StainlessSteel304 Zircaloy Water); }
SSinDashPot { id 1024; type pinUniverse;
radii (0.50419 0.54610 0.0);
fills (StainlessSteel304 Zircaloy Water); }
// Control rod pins
pinControlRodUpper { id 1013; type pinUniverse;
radii (0.37338 0.38608 0.48387 0.56134 0.60198 0.0);
fills (B4C Helium SS304 Water Zircaloy Water); }
pinControlRodLower { id 1014; type pinUniverse;
radii (0.38227 0.38608 0.48387 0.56134 0.60198 0.0);
fills (Ag-In-Cd Helium SS304 Water Zircaloy Water); }
pinControlRodSpacer { id 1015; type pinUniverse;
radii (0.37845 0.38608 0.48387 0.56134 0.60198 0.0);
fills (SS304 Helium SS304 Water Zircaloy Water); }
pinControlRodPlenum { id 1016; type pinUniverse;
radii (0.06459 0.38608 0.48387 0.56134 0.60198 0.0);
fills (Inconel Helium SS304 Water Zircaloy Water); }
// ===============================================================
// Grid Overlay Cell Universes (pin + Inconel grid spacer)
// ===============================================================
// Thick grid overlays
fuelRodPlenumWithGridThick { id 1017; type cellUniverse; cells (232 55); }
fuelRodPlenumWithGridThin { id 1018; type cellUniverse; cells (233 56); }
dashPotGuideTubeGridThick { id 1019; type cellUniverse; cells (230 55); }
dashPotGuideTubeGridThin { id 1020; type cellUniverse; cells (240 56); }
SSinGuideTubeThick { id 1021; type cellUniverse; cells (234 55); }
SSinGuideTubeThin { id 1022; type cellUniverse; cells (235 56); }
SSinDashPotThick { id 1025; type cellUniverse; cells (236 55); }
SSinDashPotThin { id 1026; type cellUniverse; cells (237 56); }
pinBPPlenumGeometryThick { id 1027; type cellUniverse; cells (238 55); }
pinBPPlenumGeometryThin { id 1028; type cellUniverse; cells (239 56); }
// ===============================================================
// Pin-with-Grid Cell Universes (at grid spacer elevations)
// ===============================================================
// Thick grid spacer (0.0198 cm Inconel sleeve)
GridPinBA31Thick { id 1110; type cellUniverse; cells (110 55); }
GridPinGTThick { id 1112; type cellUniverse; cells (112 55); }
GridPinITThick { id 1114; type cellUniverse; cells (114 55); }
GridPin16Thick { id 1116; type cellUniverse; cells (1166 55); }
GridPin24Thick { id 1124; type cellUniverse; cells (1240 55); }
GridPin31Thick { id 1131; type cellUniverse; cells (1310 55); }
// Thin grid spacer (0.0194 cm Inconel sleeve)
GridPinBA31Thin { id 9110; type cellUniverse; cells (2100 56); }
GridPinGTThin { id 9112; type cellUniverse; cells (2120 56); }
GridPinITThin { id 9114; type cellUniverse; cells (2140 56); }
GridPin16Thin { id 9216; type cellUniverse; cells (2160 56); }
GridPin24Thin { id 9224; type cellUniverse; cells (2240 56); }
GridPin31Thin { id 9231; type cellUniverse; cells (2310 56); }
// ===============================================================
// Axial Stack Cell Universes (full-height pin definitions)
// ===============================================================
fuelPin31 { id 31; type cellUniverse;
cells (100 101 102 103 104 105 106 307 308 309 310 311 312
313 314 315 316 317 318 319 320 321 322 323 324); }
fuelPin24 { id 24; type cellUniverse;
cells (325 326 327 328 329 330 331 332 333 334 335 336 337
338 3380 339 340 341 342 343 344 345 346 347 348); }
fuelPin16 { id 16; type cellUniverse;
cells (349 350 351 352 353 354 355 356 357 358 359 360 361
362 363 364 365 366 367 368 369 370 371 372 373); }
guideTube { id 12; type cellUniverse;
cells (374 375 376 377 378 379 380 381 382 383 384 385
386 387 388 389 390 391 392 393 394 395); }
instrumentTube { id 14; type cellUniverse;
cells (396 397 398 399 406 407 408 409 410 411 412 413
414 415 416 417 418 419 420 421); }
burnableAbsorber { id 10; type cellUniverse;
cells (422 423 424 425 426 427 428 429 430 431 432 433 434
435 436 437 438 439 440 441 442 443 444 445 446 447); }
controlRod { id 555555; type cellUniverse;
cells (448 449 450 451 452 453 454 455 456); }
// ===============================================================
// Assembly Lattice Definitions (17x17, pitch = 1.26 cm)
// ===============================================================
// Guide tube positions: standard Westinghouse 17x17 pattern
// id=12 guide tube, id=14 instrument tube (center), id=10 BA
// 14 guide tubes, 2.4% enrichment, no BAs
A14E24 { id 1424; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 12 24 24 12 24 24 12 24 24 24 24 24
24 24 24 12 24 24 24 24 24 24 24 24 24 12 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 12 24 24 12 24 24 14 24 24 12 24 24 12 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 12 24 24 24 24 24 24 24 24 24 12 24 24 24
24 24 24 24 24 12 24 24 12 24 24 12 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 ); }
// 14 guide tubes, 1.6% enrichment, no BAs
A14E16 { id 1416; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 16 16 12 16 16 12 16 16 12 16 16 16 16 16
16 16 16 12 16 16 16 16 16 16 16 16 16 12 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 12 16 16 12 16 16 12 16 16 12 16 16 12 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 12 16 16 12 16 16 14 16 16 12 16 16 12 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 12 16 16 12 16 16 12 16 16 12 16 16 12 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 12 16 16 16 16 16 16 16 16 16 12 16 16 16
16 16 16 16 16 12 16 16 12 16 16 12 16 16 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 ); }
// 14 guide tubes, 3.1% enrichment, no BAs
A14E31 { id 1431; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 14 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 6 BAs on top half (bottom-facing when placed at core bottom)
A60E31B { id 60316; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 12 31 31 10 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 14 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 6 BAs on bottom half (top-facing when placed at core top)
A60E31T { id 603112; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 14 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 10 31 31 12 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 6 BAs on left half (right-facing when placed at core right)
A60E31R { id 60313; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 12 31 31 12 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 14 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 10 31 31 12 31 31 12 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 6 BAs on right half (left-facing when placed at core left)
A60E31L { id 60319; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 12 31 31 12 31 31 10 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 14 31 31 12 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 12 31 31 12 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 15 BAs, bottom-right quadrant clear of BAs
A15E31BR { id 15315; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 10 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 14 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 10 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 15 BAs, bottom-left quadrant clear of BAs
A15E31BL { id 15317; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 10 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 14 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 10 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 15 BAs, top-right quadrant clear of BAs
A15E31TR { id 15311; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 10 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 14 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 10 31 31 10 31 31 12 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 15 BAs, top-left quadrant clear of BAs
A15E31TL { id 153111; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 12 31 31 12 31 31 12 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 12 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 10 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 14 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 12 31 31 10 31 31 10 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 12 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 16 BAs (all corner GT positions), 3.1% enrichment
A16E31 { id 1631; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 14 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 12 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 20 BAs (corners + middle ring), 3.1% enrichment
A20E31 { id 2031; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 12 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 12 31 31 14 31 31 12 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 10 31 31 10 31 31 12 31 31 10 31 31 10 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 10 31 31 31 31 31 31 31 31 31 10 31 31 31
31 31 31 31 31 10 31 31 10 31 31 10 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31
31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 31 ); }
// 12 BAs, 2.4% enrichment
A12E24 { id 1224; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 10 24 24 12 24 24 10 24 24 24 24 24
24 24 24 10 24 24 24 24 24 24 24 24 24 10 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 10 24 24 12 24 24 12 24 24 12 24 24 10 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 12 24 24 12 24 24 14 24 24 12 24 24 12 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 10 24 24 12 24 24 12 24 24 12 24 24 10 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 10 24 24 24 24 24 24 24 24 24 10 24 24 24
24 24 24 24 24 10 24 24 12 24 24 10 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 ); }
// 16 BAs, 2.4% enrichment
A16E24 { id 1624; type latUniverse; origin (0.0 0.0 0.0);
pitch (1.26 1.26 0.0); shape (17 17 0); padMat Water; map (
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 10 24 24 10 24 24 10 24 24 24 24 24
24 24 24 10 24 24 24 24 24 24 24 24 24 10 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 10 24 24 12 24 24 12 24 24 12 24 24 10 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 10 24 24 12 24 24 14 24 24 12 24 24 10 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 10 24 24 12 24 24 12 24 24 12 24 24 10 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 10 24 24 24 24 24 24 24 24 24 10 24 24 24
24 24 24 24 24 10 24 24 10 24 24 10 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24
24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 ); }
// ===============================================================
// Core Lattice (17x17 assemblies, pitch = 21.50364 cm)
// ===============================================================
latCore { id 9999; type latUniverse; origin (0.0 0.0 0.0);
pitch (21.50364 21.50364 0.0); shape (17 17 0); padMat Water; map (
1001 1001 1001 1001 1800 2224 2224 2224 2224 2224 2224 2224 1700 1001 1001 1001 1001
1001 1001 1800 2224 2229 1431 603112 1431 603112 1431 603112 1431 2228 2224 1700 1001 1001
1001 1800 2229 1431 1431 1631 1416 2031 1416 2031 1416 1631 1431 1431 2228 1700 1001
1001 2222 1431 153111 1624 1416 1624 1416 1624 1416 1624 1416 1624 15311 1431 2223 1001
1800 2229 1431 1624 1424 1624 1416 1224 1416 1224 1416 1624 1424 1624 1431 2228 1700
2222 1431 1631 1416 1624 1416 1224 1416 1224 1416 1224 1416 1624 1416 1631 1431 2223
2222 60319 1416 1624 1416 1224 1416 1224 1416 1224 1416 1224 1416 1624 1416 60313 2223
2222 1431 2031 1416 1224 1416 1224 1416 1224 1416 1224 1416 1224 1416 2031 1431 2223
2222 60319 1416 1624 1416 1224 1416 1224 1416 1224 1416 1224 1416 1624 1416 60313 2223
2222 1431 2031 1416 1224 1416 1224 1416 1224 1416 1224 1416 1224 1416 2031 1431 2223
2222 60319 1416 1624 1416 1224 1416 1224 1416 1224 1416 1224 1416 1624 1416 60313 2223
2222 1431 1631 1416 1624 1416 1224 1416 1224 1416 1224 1416 1624 1416 1631 1431 2223
1600 2227 1431 1624 1424 1624 1416 1224 1416 1224 1416 1624 1424 1624 1431 2226 1500
1001 2222 1431 15317 1624 1416 1624 1416 1624 1416 1624 1416 1624 15315 1431 2223 1001
1001 1600 2227 1431 1431 1631 1416 2031 1416 2031 1416 1631 1431 1431 2226 1500 1001
1001 1001 1600 2225 2227 1431 60316 1431 60316 1431 60316 1431 2226 2225 1500 1001 1001
1001 1001 1001 1001 1600 2225 2225 2225 2225 2225 2225 2225 1500 1001 1001 1001 1001 ); }
// ===============================================================
// Baffle and Structural Universes
// ===============================================================
// Side baffles
leftBaffleUni { id 2222; type cellUniverse; cells (52 53 54); }
rightBaffleUni { id 2223; type cellUniverse; cells (62 63 64); }
topBaffleUni { id 2224; type cellUniverse; cells (72 73 74); }
bottomBaffleUni { id 2225; type cellUniverse; cells (84 83 82); }
// Corner baffles (L-shaped intersections)
topLeft { id 2226; type cellUniverse; cells (201 202 203 204 205); }
topRight { id 2227; type cellUniverse; cells (301 302 303 304 305); }
bottomLeft { id 2228; type cellUniverse; cells (401 402 403 404 405); }
bottomRight { id 2229; type cellUniverse; cells (501 502 503 504 505); }
// Square corner baffles (outermost corners of baffle structure)
SQTL { id 1500; type cellUniverse; cells (601 602 603 604); }
SQTR { id 1600; type cellUniverse; cells (701 702 703 704); }
SQBL { id 1700; type cellUniverse; cells (801 802 803 804); }
SQBR { id 1800; type cellUniverse; cells (901 902 903 904); }
// ===============================================================
// Core + Structural Shell (RPV, barrel, shields)
// ===============================================================
coreAndStructures { id 8888; type cellUniverse;
cells (7 8 9 10 11 12 13 14 15 16 17); }
}
}
// ===================================================================
// VISUALIZATION
// ===================================================================
viz {
bmpZ {
type bmp;
output imgZ;
what material;
centre (0.0 0.0 422.5);
width (500.0 500.0);
axis z;
res (5000 5000);
}
bmpY {
type bmp;
output imgY;
what material;
centre (0.0 0.0 0.0);
width (800.0 1200.0);
axis y;
res (5000 5000);
}
}
// ===================================================================
// NUCLEAR DATA
// ===================================================================
nuclearData {
handles {
// Update the aceLibrary path to your local SCONE cross-section data
ce { type aceNeutronDatabase; aceLibrary /home/vr339/SCONE/myACE/JEF311.aceXS; }
}
materials {
Air {
temp 600;
composition {
18036.06 7.8730E-09;
18038.06 1.4844E-09;
18040.06 2.3506E-06;
6012.06 6.7539E-08;
7014.06 1.9680E-04;
7015.06 7.2354E-07;
8016.06 5.2866E-05;
8017.06 2.0084E-08; }
}
SS304 {
temp 600;
composition {
24050.06 7.6778E-04;
24052.06 1.4806E-02;
24053.06 1.6789E-03;
24054.06 4.1791E-04;
26054.06 3.4620E-03;
26056.06 5.4345E-02;
26057.06 1.2551E-03;
26058.06 1.6703E-04;
25055.06 1.7604E-03;
28058.06 5.6089E-03;
28060.06 2.1605E-03;
28061.06 9.3917E-05;
28062.06 2.9945E-04;
28064.06 7.6261E-05;
14028.06 9.5281E-04;
14029.06 4.8381E-05;
14030.06 3.1893E-05; }
}
Helium {
temp 600;
composition {
2003.06 4.8089E-10;
2004.06 2.4044E-04; }
}
BorosilicateGlass {
temp 600;
composition {
13027.06 1.7352E-03;
5010.06 9.6506E-04;
5011.06 3.9189E-03;
8016.06 4.6514E-02;
8017.06 1.7671E-05;
14028.06 1.6926E-02;
14029.06 8.5944E-04;
14030.06 5.6654E-04; }
}
Water {
temp 600;
composition {
5010.06 7.9714E-06;
5011.06 3.2247E-05;
// H-1 with S(a,b) thermal scattering (uncomment with valid data file):
// moder {1001.06 4.9456E-02; file h-h2o.53; }
1002.06 7.7035E-06;
8016.06 2.4673E-02;
8017.06 9.3734E-06; }
}
Zircaloy {
temp 600;
composition {
24050.06 3.2962E-06;
24052.06 6.3564E-05;
24053.06 7.2076E-06;
24054.06 1.7941E-06;
26054.06 8.6698E-06;
26056.06 1.3610E-04;
26057.06 3.1431E-06;
26058.06 4.1829E-07;
8016.06 3.0744E-04;
8017.06 1.1680E-07;
50112.06 4.6735E-06;
50114.06 3.1799E-06;
50115.06 1.6381E-06;
50116.06 7.0055E-05;
50117.06 3.7003E-05;
50118.06 1.1669E-04;
50119.06 4.1387E-05;
50120.06 1.5697E-04;
50122.06 2.2308E-05;
50124.06 2.7897E-05;
40090.06 2.1828E-02;
40091.06 4.7601E-03;
40092.06 7.2759E-03;
40094.06 7.3734E-03;
40096.06 1.1879E-03; }
}
Inconel {
temp 600;
composition {
24050.06 7.8239E-04;
24052.06 1.5088E-02;
24053.06 1.7108E-03;
24054.06 4.2586E-04;
26054.06 1.4797E-03;
26056.06 2.3229E-02;
26057.06 5.3645E-04;
26058.06 7.1392E-05;
25055.06 7.8201E-04;
28058.06 2.9320E-02;
28060.06 1.1294E-02;
28061.06 4.9094E-04;
28062.06 1.5653E-03;
28064.06 3.9864E-04;
14028.06 5.6757E-04;
14029.06 2.8820E-05;
14030.06 1.8998E-05; }
}
B4C {
temp 600;
composition {
5010.06 1.5206E-02;
5011.06 6.1514E-02;
6012.06 1.8972E-02; }
}
Ag-In-Cd {
temp 600;
composition {
47107.06 2.3523E-02;
47109.06 2.1854E-02;
48106.06 3.3882E-05;
48108.06 2.4166E-05;
48110.06 3.3936E-04;
48111.06 3.4821E-04;
48112.06 6.5611E-04;
48113.06 3.3275E-04;
48114.06 7.8252E-04;
48116.06 2.0443E-04;
49113.06 3.4219E-04;
49115.06 7.6511E-03; }
}
UO2-16 {
temp 600;
composition {
8016.06 4.5897E-02;
8017.06 1.7436E-05;
92234.06 3.0131E-06;
92235.06 3.7503E-04;
92238.06 2.2625E-02; }
}
UO2-24 {
temp 600;
composition {
8016.06 4.5830E-02;
8017.06 1.7411E-05;
92234.06 4.4842E-06;
92235.06 5.5814E-04;
92238.06 2.2407E-02; }
}
UO2-31 {
temp 600;
composition {
8016.06 4.5853E-02;
8017.06 1.7420E-05;
92234.06 5.7987E-06;
92235.06 7.2175E-04;
92238.06 2.2253E-02; }
}
UO2-32 {
temp 600;
composition {
8016.06 4.6029E-02;
8017.06 1.7487E-05;
92234.06 5.9959E-06;
92235.06 7.4630E-04;
92238.06 2.2317E-02; }
}
UO2-34 {
temp 600;
composition {
8016.06 4.6110E-02;
8017.06 1.7517E-05;
92234.06 6.4018E-06;
92235.06 7.9681E-04;
92238.06 2.2307E-02; }
}
CarbonSteel {
temp 600;
composition {
13027.06 4.3523E-05;
5010.06 2.5833E-06;
5011.06 1.0450E-05;
6012.06 1.0442E-03;
20040.06 1.7043E-05;
20042.06 1.1375E-07;
20043.06 2.3734E-08;
20044.06 3.6673E-07;
20046.06 7.0322E-10;
20048.06 3.2875E-08;
24050.06 1.3738E-05;
24052.06 2.6493E-04;
24053.06 3.0041E-05;
24054.06 7.4778E-06;
29063.06 1.0223E-04;
29065.06 4.5608E-05;
26054.06 4.7437E-03;
26056.06 7.4465E-02;
26057.06 1.7197E-03;
26058.06 2.2886E-04;
25055.06 6.4126E-04;
42100.06 2.9814E-05;
42092.06 4.4822E-05;
42094.06 2.8110E-05;
42095.06 4.8567E-05;
42096.06 5.1015E-05;
42097.06 2.9319E-05;
42098.06 7.4327E-05;
41093.06 5.0559E-06;
28058.06 4.0862E-04;
28060.06 1.5740E-04;
28061.06 6.8420E-06;
28062.06 2.1815E-05;
28064.06 5.5557E-06;
15031.06 3.7913E-05;
16032.06 3.4808E-05;
16033.06 2.7420E-07;
16034.06 1.5368E-06;
16036.06 5.3398E-09;
14028.06 6.1702E-04;
14029.06 3.1330E-05;
14030.06 2.0653E-05;
22046.06 1.2144E-06;
22047.06 1.0952E-06;
22048.06 1.0851E-05;
22049.06 7.9634E-07;
22050.06 7.6249E-07;
23051.06 4.5989E-05; }
}
SupportPlateSS {
temp 600;
composition {
24050.06 3.5223E-04;
24052.06 6.7924E-03;
24053.06 7.7020E-04;
24054.06 1.9172E-04;
26054.06 1.5882E-03;
26056.06 2.4931E-02;
26057.06 5.7578E-04;
26058.06 7.6625E-05;
25055.06 8.0762E-04;
28058.06 2.5731E-03;
28060.06 9.9117E-04;
28061.06 4.3085E-05;
28062.06 1.3738E-04;
28064.06 3.4985E-05;
14028.06 4.3711E-04;
14029.06 2.2195E-05;
14030.06 1.4631E-05; }
}
StainlessSteel304 {
temp 600;
composition {
24050.06 7.6778E-04;
24052.06 1.4806E-02;
24053.06 1.6789E-03;
24054.06 4.1791E-04;
26054.06 3.4620E-03;
26056.06 5.4345E-02;
26057.06 1.2551E-03;
26058.06 1.6703E-04;
25055.06 1.7604E-03;
28058.06 5.6089E-03;
28060.06 2.1605E-03;
28061.06 9.3917E-05;
28062.06 2.9945E-04;
28064.06 7.6261E-05;
14028.06 9.5281E-04;
14029.06 4.8381E-05;
14030.06 3.1893E-05; }
}
SupportPlateBW {
temp 600;
composition {
5010.06 1.0559E-05;
5011.06 4.2716E-05;
1001.06 6.5512E-02;
1002.06 1.0204E-05;
8016.06 3.2683E-02;
8017.06 1.2416E-05; }
}
}
}
Materials and Nuclear Data
The nuclearData block includes materials from the BEAVRS specification: Water (with boron), UO2-16/24/31/32/34, Zircaloy, Helium, Inconel, B4C, Ag-In-Cd, CarbonSteel, StainlessSteel304, SupportPlateSS, SupportPlateBW, BorosilicateGlass, Air, and SS304. You must set aceLibrary to your local ACE cross-section file path (e.g. JEF-3.1.1 or ENDF/B-VII.1).
Note: Full-core eigenvalue runs require substantial memory and CPU. Start with reduced population (e.g. pop 10000, active 50, inactive 20) for smoke tests. Eigenvalue pin-cell and assembly models can fail with fission source collapse; verify with fixed-source or bare-sphere tests first. See Troubleshooting.
Related Pages
- Reactor Examples — Simplified 17×17 assembly lattice (BEAVRS-based)
- Nuclear Data — Material composition and ACE library setup
- Geometry — Surfaces, cells, universes, lattices
- Troubleshooting — Common SCONE issues and fixes