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Member KzzmTbft or Kzzmc00t (( σ s (g,g’),g’=1,NGT),g=1,NGT) ( σ up (g),g=1,NGT) ( σ c (g),g=1,NGT) ( σ t (g),g=1,NGT) ( σ f (g),g=1,NGT) (ν (g),g=1,NGT) P 0 scattering matrix σ if INT(2)>0 s, g→g ' Note: Some nuclides may not have thermal scattering data. Up-scattering cross-sections Capture cross-sections Total cross-sections Fission cross-sections Neutron yields per fission in thermal range /NGT*(NGT+5) or /5*NGT/ Member mmmmBMIC /MAXNG*6*MMK/ ((( σ eff (g,x,i),g=1,MAXNG),x=1,6),i=1,MMK) where σ eff (g,x,i) is the effective microscopic cross-sections of energy group g, reaction x, nuclide i. MAXNG is the maximum number of groups (=107) fixed by the parameter in a include file of the SRAC sources. If g-value exceeds the number of fine groups, null values are filled. The reaction types are σ c by x=1, σ f by x=2, σ e (elastic) by x=3, σ er (elastic removal) by x=4, σ n,2n by x=5 and νσ f by x=6. MMK is the number of the whole nuclides contained in the material if IC20=0 (cf. Sect.2.2) is specified. Otherwise (burn-up calculation), MMK is the number of whole depleting nuclides implicitly determined by the burn-up chain model even at the zero burn-up step. As this member has no burn-up tag, the cross-section values are updated by those at the current burn-up step. 162
3.1.5 Fine Group Macroscopic Cross-Section File [MACROWRK] The macroscopic cross-sections by material and those by X-Region obtained by homogenization are stored in the fine group macroscopic cross-sections file (MACROWRK) with the fine group structure. Member name Contents ********************************************************************************** CONTe002 Energy group structure for the energy range specified by e-tag mmmmebfp Cross-sections of material mmmm mmmmebfM (n,2n) cross-sections of material mmmm mmmmebfY Delayed neutron data of material mmmm caseebxp Cross-sections of X-Region x caseebxM (n,2n) cross-sections of X-Region x caseebxY Delayed neutron data of X-Region x ********************************************************************************** mmmm First four characters of material name (MTNAME in Sect.2.9), case Case name (See Sect.2.9), e Energy range indicator: e=F for fast, e =T for thermal, e =A for whole energy range, b one alphanumeric character for burn-up step indicator as 0,1,2,……,9,A,B,….Z,a,b,….,z. For non-depleting material in burn-up problem or the material with composition in non-burn-up problem, the sixth character of material name is given. f one alphanumeric character for the seventh character of material name. x one alphanumeric character for X-Region number (1,2,……..,9,A,B,….Z) is given. p Legendre component indicator. p=2: P 0 component with transport correction, p=3: P 1 component, p=4: P 0 component without transport correction. p=5: P 2 component (for the material including nuclides with higher order P L data) p=6: P 3 component (for the material including nuclides with higher order P L data) p=7: P 4 component (for the material including nuclides with higher order P L data) p=8: P 5 component (for the material including nuclides with higher order P L data) ********************************************************************************** Member CONTe002 /2*(Number of groups+1)/ ng Number of energy groups (depends on e-tag) (W(g),g=1,ng) Weighted lethargy widths that may be utilized in collapsing the group structure. (E(g),g=1,ng+1) Energy boundaries (eV) starting at the highest energy 163
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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
Page 123 and 124: Card-006-3 Specification of meshes
Page 125 and 126: 4 SIG3 Absorption cross-section (
Page 127 and 128: 2 NFX2 Optional print control = 0 N
Page 129 and 130: Region 1 Region 2 Left Right X/R/R
Page 131 and 132: X T 22*11 Meshes 1 Mesh = 1 Region
Page 133 and 134: 2.9 Material Specification ’Mater
Page 135 and 136: fuel pin: MU08F0U2 and those in MOX
Page 137 and 138: hydrogen, add character ‘0’ to
Page 139 and 140: Usually, enter IRES=2 for the heavy
Page 141 and 142: 2.10 Reaction Rate Calculation The
Page 143 and 144: Block-1 Control integers for reacti
Page 145 and 146: 3 U238 The position of the second n
Page 147 and 148: 2.11 Cell Burn-up Calculation The i
Page 149 and 150: = 2 Information for debugging = 3 D
Page 151 and 152: chains under consideration is enlar
Page 153 and 154: MACROWRK file. 2 INTSTP Step number
Page 155 and 156: Block-8-1 Required if IBC6=1 /1/ NM
Page 157 and 158: e avoided. Because U08W and U080 ar
Page 159 and 160: 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: (WEIGHT(g),g=1,NGF) Lethargy widths
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
Page 209 and 210: 613.0 650.0 760.0 769.0 & cooling 7
Page 211 and 212: 5 5 5 5 5 5 & 5 5 5 5 5 5 & 1 2 3 4
Page 213 and 214: 5.3 S N Transport Calculation (PIJ,
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
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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
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In Fig.7.1-5, the line PQ’ define
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pin rod are divided into four regio
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the arrays T and II, respectively.
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Note that among four terms appearin
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If a group-dependent form of Fick
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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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