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* thermal cut-off energy = 0.99312eV 0 0 10 0 / IOPT(1:4)--------- > -------------------+ 1 1 2 1 0 0 67(1.0) 40(0.0) / MPOSI,LU235,LU238,IX,IY,IZ,FGS(1:IGMAX) ! 1 3 4 1 0 0 67(1.0) 40(0.0) / ! 1 5 6 1 0 0 67(1.0) 40(0.0) / ! 1 7 8 1 0 0 67(1.0) 40(0.0) / ! 1 9 9 1 0 0 67(1.0) 40(0.0) / ! 3 1 2 3 0 0 67(1.0) 40(0.0) / ! 3 3 4 3 0 0 67(1.0) 40(0.0) / ! 3 5 6 3 0 0 67(1.0) 40(0.0) / ! 3 7 8 3 0 0 67(1.0) 40(0.0) / ! 3 9 9 3 0 0 67(1.0) 40(0.0) / ----------------------------------------+ 0 / PEACO PLOT one blank line (null case name to terminate job) -------------------------------------------------------------------------------------------------------------------------- 200
5.3 S N Transport Calculation (PIJ, ANISN, TWOTRAN) The left side figure in Fig.5.3-1 shows a criticality problem of a fuel solution in a cylindrical stainless-steel container of 0.3cm bottom and side wall thickness, 15cm outer radius and 54.249cm total height. This problem is solved by using both of ANISN and TWOTRAN. The calculation scheme consists of the following three cases. (1) Production of effective cross-sections by PIJ (case name: CELL) A fixed source problem is solved for a one-dimensional infinitely long cylindrical system of fuel solution and the container by using PIJ module with 107-group structure. The fine group effective cross-sections are obtained as the result. This case is for the effective resonance calculation by the PEACO option. If the NR or IR approximation is used, this case is not necessary. (2) Production of few group cross-sections by ANISN (case name: ANIS) An eigenvalue is solved for the same geometry as that of the first case (the one-dimensional infinitely long cylindrical system of fuel solution and the container with 107-group structure) by using ANISN one-dimensional Sn module with P 1 S 8 . In this calculation, the cross-sections are provided by the first case. The axial leakage is taken into accounted by the transverse buckling. The cross-sections are collapsed by the flux obtained by ANISN into 18-group structure. To consider the difference of spectrum of outer part near the vacuum boundary and that of inner part, the cross-sections of fuel solution corresponding to these parts are separately obtained by specifying two homogenization regions (X-Region). (3) Few group eigenvalue calculation by TWOPTRAN (case name: TWOC) The final eigenvalue problem is solved for the R-Z geometry by TWOTRAN: two-dimensional SN module with P 1 S 8 approximation. The 18 group P 0 and P 1 cross-sections for three materials (inner fuel solution, outer one and SS container) are provided by the previous case. The right side figure in Fig.5.3-1 shows material and zone allocation for TWOTRAN. 201
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JAEA-Data/Code 2007-004 SRAC2006 :
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Contents 1. General Descriptions ..
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5.5 BWR Fuel Assembly Calculation (
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目次 1. 概要 ................
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5.4 三次元拡散計算 (CI
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1. General Descriptions 1.1 Functio
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essential programs of the integrate
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Sphere (Pebble, HTGR) 1D-Plate (JRR
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ecause the scattering cross-section
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As shown in Fig.1.4-1, one PDS file
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1.5.1 Fast Fission Energy Range (10
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i n m≠n i n i n i n i 1 i i g( C
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mixture(s) having resonant nuclides
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thermal energy range. In the fixed
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1.10 Calculation Scheme In Fig.1.10
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3 2 1 CALL MICREF [20] CALL REACT C
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homogenized P 1 spectrum obtained a
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Consequently next step ’CALL MACR
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1.11 Output Information Major calcu
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(4) A floating number may be entere
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2.2 General Control and Energy Stru
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cell. = 2 The PEACO routine (hyperf
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should be avoided for the core wher
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Note: Usually IC15=1 is used in FBR
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Behrens’ term of the Benoist mode
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Only the first character (capital l
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NET ∑ i= 1 NEGT( i ) =(Total numb
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Block-1 Control integers /18/ 1 IGT
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asymmetric cell is surrounded by en
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= 0 Isotropic (white) reflection =
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degree for the numerical angular in
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3 EPSG Extrapolation criterion 4 R
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Block-10’ Required if IGT=11, or
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= 2 Neutron from moderator = 3 Neut
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Unit Cell Periodic B.C. 4 2 3 1 RX(
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NX=4 NTPIN=6 NAPIN=1 NPIN(1)=6 6 ID
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RDP(1)=0.0 RDP(2) RDP(3) 14 13 12 R
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2.5 ANISN ; One-dimensional S N Tra
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7 IBR Right boundary condition, sam
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22 IPM Angular dependent incident s
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EV = best guess for α or 0.0 when
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Block-04* Positions of interval bou
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2.6 TWOTRAN ; Two-dimensional S N T
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Note: The original TWOTRAN uses two
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= 0 (internally set) 19 IHM Total n
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= 3 R-θ 31 IEDOPT Edit options. =
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= 1 Yes Block-4 Control floating po
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Repeat Block-20 through Block-21, N
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2.7 TUD ; One-dimensional Diffusion
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= 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
Page 161 and 162: 3. I/O FILES We shall describe the
Page 163 and 164: (E(g),g=1,NGF+1) structure. Boundar
Page 165 and 166: LTH(1) = (LD(1)+1)*LA(1), ordered a
Page 167 and 168: Background cross-sections Member Yz
Page 169 and 170: INT(2) = 0 K-member only without sc
Page 171 and 172: Member name Contents **************
Page 173 and 174: (WEIGHT(g),g=1,NGF) Lethargy widths
Page 175 and 176: 3.1.5 Fine Group Macroscopic Cross-
Page 177 and 178: Member mmmmebfM or caseebxM /10*ng+
Page 179 and 180: Member caseBNUP Material-wise burn-
Page 181 and 182: Initial inventory in the restart ca
Page 183 and 184: (YDIOX(j),j=1,NOWSTP) Fission yield
Page 185 and 186: (n/cm 2 /sec*cm 3 ), NRR is number
Page 187 and 188: 3.2.1 Common PS Files The following
Page 189 and 190: 3.2.5 PS files for TUD The PS files
Page 191 and 192: at the first column. Block-1-1 Numb
Page 193 and 194: = ‘DAYS’ days = ‘YEARS’ yea
Page 195 and 196: GD156 XGD60001 641560 154.660 0 0 0
Page 197 and 198: : ZZ050 1.50080E+00 *FP-Yield-Data
Page 199 and 200: Kr83 Zr95 fission β + decay, EC (n
Page 201 and 202: Ge73 Ge74 As75 Ge76 fission β + de
Page 203 and 204: 4. Job Control Statements In this c
Page 205 and 206: ~SRAC/tool/lmmake/lmmk/lmmk.sh, whi
Page 207 and 208: 5. Sample Input Several typical exa
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Page 211: 5 5 5 5 5 5 & 5 5 5 5 5 5 & 1 2 3 4
Page 215 and 216: XFEN0001 2 0 5.78720E-02 XNIN0001 2
Page 217 and 218: Water reflector Extrapolated B.C. B
Page 219 and 220: 1 1 1 1 1 1 1 2 3 008 -2 1 1 999 /
Page 221 and 222: Note: This sample is time consuming
Page 223 and 224: XCRN0008 0 0 1.55546E-02 XNIN0008 0
Page 225 and 226: ****** Input for material specifica
Page 227 and 228: T-Region R-Region X-Region Reflecti
Page 229 and 230: 6. Utility for PDS File Management
Page 231 and 232: To read in the microscopic cross-se
Page 233 and 234: 7. Mathematical Formulations 7.1 Fo
Page 235 and 236: scattering kernel at point r’ fro
Page 237 and 238: The integration by R between R j- a
Page 239 and 240: G j Pij ( lattice) = Pij ( isolated
Page 241 and 242: We, however, should take care of th
Page 243 and 244: 2 = ρ 2 + x r sin β = ρ R = x
Page 245 and 246: 1 i ∑ − 1 k = j+ 1 λ ij = λ k
Page 247 and 248: where λ λ 1 is 2 is = = N ∑ k k
Page 249 and 250: 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
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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 ,
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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
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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 (
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M dN i ( t) M = ∑ f j→iλ j N i
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8. Tables on Cross-Section Library
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Table 8.1-2 (2/2) Element index (zz
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JEFF-3.0 are based on other nuclear
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Table 8.2-1 (1/8) List of SRAC publ
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8.3 Energy Group Structure The ener
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(4) Upper Boundary of PEACO Routine
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References 1) K. Tsuchihashi, H. Ta
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Experiment,” J. Nucl. Sci. Techno
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75) K. Tasaka : “DCHAIN: Code for
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