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material such as an aluminum metal, the iterative process to obtain the spectrum may fail to converge. [cf.] Sect.1.10 IC17 Indicator how to compose and to collapse the averaged diffusion coefficients The absolute value of this item defines the way of spatial average of the diffusion coefficients in the fine-energy group stage, and the sign of IC17 defines how to collapse the diffusion coefficients and the total (transport) cross-sections into the few group constants. If IC17>0 D = ∑ 1 1 ϕ / ϕ , = ϕ / ∑ ∑ G D g g g g∈G g∈G Σt, G g∈G Σt, g g ∑ g∈G ϕ g If IC17
Behrens’ term of the Benoist model 25) which are written into D1 positions in the MACROWRK file. ⎪⎧ ⎨ ⎪⎩ ∑ ∑ ⎪⎫ / Σ tr, j, g ⎬ / ∑ϕi ⎪⎭ i D g = ϕi, g Pi −> j, g 3 , g i j = ±3 The anisotropic components of the Behrens’ term of the Benoist model. ⎪⎧ ⎨ ⎪⎩ ∑ ∑ ⎪⎫ / Σ tr, j, g ⎬ / ∑ϕi ⎪⎭ i D k , g = ϕi, g Pi −> j, k , g 3 , g i j The radial components in the cylindrical coordinate or the perpendicular components in the plate geometry are written into D1, and the axial components in the cylindrical or the parallel components in the plate are written into the D2 position. Pin Plate D2 D2 D1 D1 Note: Unless IC17= ± 3, the values stored in D2 position are made as if the options IC16=0 and IC17=1 are specified. IC18 Indicator to call the reaction rate calculation. = 0 Skip = 1 Call reaction routine. The input described in Sect.2.10 is required. IC19 Print control in the routines for forming the macroscopic cross-sections (MACROF, MACROT, P1B1, HOMOSP, IRA, PEACO) = 0 The most brief edit > 0 The larger value prints the more fine information, (usually up to 2) IC20 Indicator to call the cell burn-up calculation 39
Page 3 and 4: JAEA-Data/Code 2007-004 SRAC2006 :
Page 5 and 6: Contents 1. General Descriptions ..
Page 7 and 8: 5.5 BWR Fuel Assembly Calculation (
Page 9 and 10: 目次 1. 概要 ................
Page 11 and 12: 5.4 三次元拡散計算 (CI
Page 13 and 14: 1. General Descriptions 1.1 Functio
Page 15 and 16: essential programs of the integrate
Page 17 and 18: Sphere (Pebble, HTGR) 1D-Plate (JRR
Page 19 and 20: ecause the scattering cross-section
Page 21 and 22: As shown in Fig.1.4-1, one PDS file
Page 23 and 24: 1.5.1 Fast Fission Energy Range (10
Page 25 and 26: i n m≠n i n i n i n i 1 i i g( C
Page 27 and 28: mixture(s) having resonant nuclides
Page 29 and 30: thermal energy range. In the fixed
Page 31 and 32: 1.10 Calculation Scheme In Fig.1.10
Page 33 and 34: 3 2 1 CALL MICREF [20] CALL REACT C
Page 35 and 36: homogenized P 1 spectrum obtained a
Page 37 and 38: Consequently next step ’CALL MACR
Page 39 and 40: 1.11 Output Information Major calcu
Page 41 and 42: (4) A floating number may be entere
Page 43 and 44: 2.2 General Control and Energy Stru
Page 45 and 46: cell. = 2 The PEACO routine (hyperf
Page 47 and 48: should be avoided for the core wher
Page 49: Note: Usually IC15=1 is used in FBR
Page 53 and 54: Only the first character (capital l
Page 55 and 56: NET ∑ i= 1 NEGT( i ) =(Total numb
Page 57 and 58: Block-1 Control integers /18/ 1 IGT
Page 59 and 60: asymmetric cell is surrounded by en
Page 61 and 62: = 0 Isotropic (white) reflection =
Page 63 and 64: degree for the numerical angular in
Page 65 and 66: 3 EPSG Extrapolation criterion 4 R
Page 67 and 68: Block-10’ Required if IGT=11, or
Page 69 and 70: = 2 Neutron from moderator = 3 Neut
Page 71 and 72: Unit Cell Periodic B.C. 4 2 3 1 RX(
Page 73 and 74: NX=4 NTPIN=6 NAPIN=1 NPIN(1)=6 6 ID
Page 75 and 76: RDP(1)=0.0 RDP(2) RDP(3) 14 13 12 R
Page 77 and 78: 2.5 ANISN ; One-dimensional S N Tra
Page 79 and 80: 7 IBR Right boundary condition, sam
Page 81 and 82: 22 IPM Angular dependent incident s
Page 83 and 84: EV = best guess for α or 0.0 when
Page 85 and 86: Block-04* Positions of interval bou
Page 87 and 88: 2.6 TWOTRAN ; Two-dimensional S N T
Page 89 and 90: Note: The original TWOTRAN uses two
Page 91 and 92: = 0 (internally set) 19 IHM Total n
Page 93 and 94: = 3 R-θ 31 IEDOPT Edit options. =
Page 95 and 96: = 1 Yes Block-4 Control floating po
Page 97 and 98: Repeat Block-20 through Block-21, N
Page 99 and 100: 2.7 TUD ; One-dimensional Diffusion
Page 101 and 102:
= 1 Monitor print at each inner ite
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equation is applied to meshes, the
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Pin Plate D2 D2 D1 D1 In cylindrica
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XYZ(1,2) Y-abscissa of the top side
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READ(9) (WORK(J+I),I=1,NDATA) END D
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absorption cross-section, each of w
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ITMX19 The upper limit of CPU time
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corner and there are the same numbe
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NUAC19 Override use of Chebychev po
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NUAC17 > 0 The constant for all gro
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ottom starting with a new card. For
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Card-006-3 Specification of meshes
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4 SIG3 Absorption cross-section (
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2 NFX2 Optional print control = 0 N
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Region 1 Region 2 Left Right X/R/R
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X T 22*11 Meshes 1 Mesh = 1 Region
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2.9 Material Specification ’Mater
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fuel pin: MU08F0U2 and those in MOX
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hydrogen, add character ‘0’ to
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Usually, enter IRES=2 for the heavy
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2.10 Reaction Rate Calculation The
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Block-1 Control integers for reacti
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3 U238 The position of the second n
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2.11 Cell Burn-up Calculation The i
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= 2 Information for debugging = 3 D
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chains under consideration is enlar
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MACROWRK file. 2 INTSTP Step number
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Block-8-1 Required if IBC6=1 /1/ NM
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e avoided. Because U08W and U080 ar
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2.12 PEACO ; The hyperfine Group Re
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3. I/O FILES We shall describe the
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(E(g),g=1,NGF+1) structure. Boundar
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LTH(1) = (LD(1)+1)*LA(1), ordered a
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Background cross-sections Member Yz
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INT(2) = 0 K-member only without sc
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Member name Contents **************
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(WEIGHT(g),g=1,NGF) Lethargy widths
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3.1.5 Fine Group Macroscopic Cross-
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Member mmmmebfM or caseebxM /10*ng+
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Member caseBNUP Material-wise burn-
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Initial inventory in the restart ca
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(YDIOX(j),j=1,NOWSTP) Fission yield
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(n/cm 2 /sec*cm 3 ), NRR is number
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3.2.1 Common PS Files The following
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3.2.5 PS files for TUD The PS files
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at the first column. Block-1-1 Numb
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= ‘DAYS’ days = ‘YEARS’ yea
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GD156 XGD60001 641560 154.660 0 0 0
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: ZZ050 1.50080E+00 *FP-Yield-Data
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Kr83 Zr95 fission β + decay, EC (n
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Ge73 Ge74 As75 Ge76 fission β + de
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4. Job Control Statements In this c
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~SRAC/tool/lmmake/lmmk/lmmk.sh, whi
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5. Sample Input Several typical exa
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613.0 650.0 760.0 769.0 & cooling 7
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5 5 5 5 5 5 & 5 5 5 5 5 5 & 1 2 3 4
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5.3 S N Transport Calculation (PIJ,
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XFEN0001 2 0 5.78720E-02 XNIN0001 2
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Water reflector Extrapolated B.C. B
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1 1 1 1 1 1 1 2 3 008 -2 1 1 999 /
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Note: This sample is time consuming
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XCRN0008 0 0 1.55546E-02 XNIN0008 0
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****** Input for material specifica
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T-Region R-Region X-Region Reflecti
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6. Utility for PDS File Management
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To read in the microscopic cross-se
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7. Mathematical Formulations 7.1 Fo
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scattering kernel at point r’ fro
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The integration by R between R j- a
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G j Pij ( lattice) = Pij ( isolated
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We, however, should take care of th
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2 = ρ 2 + x r sin β = ρ R = x
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1 i ∑ − 1 k = j+ 1 λ ij = λ k
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where λ λ 1 is 2 is = = N ∑ k k
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2π ri −1 Pij = − Σ ∫ ρdρ
Page 251 and 252:
In Fig.7.1-5, the line PQ’ define
Page 253 and 254:
pin rod are divided into four regio
Page 255 and 256:
the arrays T and II, respectively.
Page 257 and 258:
Note that among four terms appearin
Page 259 and 260:
If a group-dependent form of Fick
Page 261 and 262:
7.3 Optional Processes for Resonanc
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7.3.2 Table-look-up Method of f-tab
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has been introduced for the correct
Page 267 and 268:
ϕ i ( 0 u ) = ∑ Pij ( u) W j ( u
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Geometry b i m f b f −( γ + γ )
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will be seen in the reference 65) .
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The lattice cell under study may co
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(2) Two resonance-absorbing composi
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One of the physical problems associ
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and V = V + V , F f m where Σ m ,
Page 281 and 282:
We shall discuss the following two
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where X = 2R p ( Σ C = 2R πρ R p
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• the reduced collision probabili
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The root mean square (RMS) residual
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group flux and for the fast group f
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Table 7.5-1 (1/2) Nomenclature Symb
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7.5.1 Smearing Smearing or spatial
Page 295 and 296:
7.5.2 Spectrum for Collapsing The f
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Here, an equivalent relation holds
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1 F = K ∑∫ g * χ g ( r) ϕ g (
Page 301 and 302:
M dN i ( t) M = ∑ f j→iλ j N i
Page 303 and 304:
8. Tables on Cross-Section Library
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Table 8.1-2 (2/2) Element index (zz
Page 307 and 308:
JEFF-3.0 are based on other nuclear
Page 309 and 310:
Table 8.2-1 (1/8) List of SRAC publ
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
8.3 Energy Group Structure The ener
Page 319 and 320:
(4) Upper Boundary of PEACO Routine
Page 321 and 322:
References 1) K. Tsuchihashi, H. Ta
Page 323 and 324:
Experiment,” J. Nucl. Sci. Techno
Page 325:
75) K. Tasaka : “DCHAIN: Code for
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