You can keep a window containing this package available on your workstation screen while you prepare TRANSX input.
A number of cross-section libraries in MATXS format are available for TRANSX. These libraries are converted between binary and ASCII modes using the BBC code. BBC can also be used to index or list a library. A new capability is to use a random-access directory of single material MATXS files rather than a large multi-material MATXS file. BBC can also be used to manage such directories.
Links to several sample problems will be found at the end of this page.
There is also a hypertext version of the TRANSX report available.
---USER INPUT (FREE FORM)-----------
CARD 1 RUN TITLE (HOLLERITH DESCRIPTIVE COMMENT)
72 CHARS MAX. NO DELIMITERS OR TERMINATOR REQUIRED.
STOP TERMINATES JOB
CARD 2 OPTIONS
IPRINT PRINT (0=LONG/1=SHORT)
IOUT OUTPUT FORMAT
0 NONE
1 CARD (6E12)
2 CLAW (CARD WITH SEPARATE EDITS)
3 FIDO
4 ANISN (FIDO WITH 2*L+1 FACTOR)
5 GOXS (GROUP-ORDERED BINARY)
6 ISOTXS (CCCC-IV MATERIAL-ORDERED BINARY)
7 ANISNB (ANISN BINARY)
8 ANIGIF (ANISN GROUP-ORDERED BINARY)
IPROB PROBLEM (0=DIRECT/1=ADJOINT)
ISET ISET=I FOR A SIMPLE SET FOR PARTICLE I,
ISET=IJ FOR A COUPLED SET FOR PARTICLES I AND J,
ISET=IJK FOR A THREE-WAY COUPLED SET, ETC.
IFORM FORM (1=MATWISE/2=GROUPWISE)
ITIME FISSION TIME (1=STEADY-STATE/2=PROMPT)
IDECAY DECAY TIME (RESERVED)
ITRC TRANSPORT CORRECTION
0 NONE (NOT FOR SN CODES)
1 CONSISTENT-P
2 DIAGONAL
3 BELL-HANSEN-SANDMEIER
4 INFLOW
5 INCONSISTENT-P
ICOLL COLLAPSE (0=NO/NFINE=YES)
INITF INITIAL FLUX
0 USE LIBRARY WEIGHT FOR P0 FLUX
1 READ P0 FLUX ON CARDS
2 READ RTFLUX INTERFACE (CCCC-IV TOTAL FLUX)
3 READ RZMFLX INTERFACE (ZONE MOMENTS FLUX)
4 READ RZFLUX INTERFACE (CCCC-IV ZONE FLUX)
12-14 TRIGGERS REMAP OF INPUT FLUX
-N MAKE ELASTIC SCATTERING FLUX CORRECTION
(FOR LAST FIVE ITEMS, DEFAULT=FIRST OPTION)
CARD 3 PARAMETERS
NGROUP NUMBER OF GROUPS IN TABLE
NL NUMBER OF LEGENDRE TABLES
NTABL TABLE LENGTH
NUP NUMBER OF UPSCATTER GROUPS
NTHG NUMBER OF THERMAL GROUPS
NMIX NUMBER OF OUTPUT MIXES OR MATERIALS
NREG NUMBER OF REGIONS
NMIXS NUMBER OF MIX SPECIFICATIONS
NED NUMBER OF EXTRA EDITS
NEDS NUMBER OF EDIT SPECIFICATIONS
SET NGROUP NEGATIVE TO TRIGGER
MATERIAL RANDOM ACCESS MODE.
CARD 3A (NGROUP NEGATIVE ONLY)
MPATH PATHS FOR MATXS DIRECTORY (24 CHAR MAX)
CARD 4 MIX NAMES HMIXN
NMIX HOLLERITH MIX NAMES (6 CHARACTERS MAX)
CARD 5 REGION AND HETEROGENEITY SPECS
HREGN REGION HOLLERITH NAME (6 CHARACTERS MAXIMUM)
RTEMP REGION TEMPERATURE (K) (DEFAULT=300)
RVOL REGION VOLUME (DEFAULT=1.)
IHET HETEROGENEITY OPTION (DEFAULT=0=NO SELF SHIELDING)
0 NO SELF SHIELDING
1 CONSTANT ESCAPE CROSS SECTION
2 CYLINDER BY BELL APPROXIMATION
3 CYLINDER IN HEX LATTICE BY SAUER APPROXIMATION
4 CYLINDER IN SQUARE LATTICE BY SAUER APPROXIMATION
5 SLAB CELL BY BELL APPROXIMATION (REFLECTIVE)
6 SLAB CELL BY E3 APPROXIMATION (REFLECTIVE)
7 SLAB CELL BY BELL APPROXIMATION (PERIODIC)
8 SLAB CELL BY E3 APPROXIMATION (PERIODIC)
-N CONTINUE SPECIFYING THE CELL
THE REST OF THE PARAMETERS ON CARD 5
DEPEND ON THE VALUE OF IHET. THESE VALUES
ARE ONLY GIVEN FOR THE FIRST REGION OF EACH CELL.
-- IHET=1 -- CONSTANT ESCAPE
CHORD MEAN CHORD LENGTH (CM)
-- IHET=2 THRU 8 -- DANCOFF APPROXIMATIONS
BELL1 BELL CORRECTION TO RATIONAL APPROX.
BELL2 BELL CORRECTION TO DENOMINATOR
REPEAT CARD 5 NREG TIMES
CARD 6 REMAP INSTRUCTIONS (ABS(INITF).GE.12 ONLY)
FLUX POINT, ZONE, OR REGION FROM INPUT FILE TO BE
ASSIGNED TO EACH TRANSX REGION (NREG INTEGERS)
CARD 7 MIX SPECIFICATIONS
IMIX MIX NUMBER (0 TO NMIX)
IREG REGION NUMBER
HMIX NAME OF ISOTOPE FROM MATXS
DENS MULTIPLIER (FRACTION OR DENSITY) (DEFAULT=1)
HINC THERMAL INELASTIC NAME (DEFAULT=BLANK),
OR CONSTITUENT CROSS SECTION FLAG
("RC" FOR REGION CONSTITUENT, OR "CC" FOR CELL)
HCOH THERMAL ELASTIC NAME (DEFAULT=BLANK)
HMOD MATRIX MOD REACTION (DEFAULT=BLANK=TOTAL)
REPEAT CARD 7 NMIXS TIMES
CARD 8 EDIT NAMES
HED NED HOLLERITH EDIT NAMES (6 CHARACTER MAXIMUM)
CARD 9 EDIT SPECIFICATIONS
JEDPOS EDIT POSITION (USUALLY IN RANGE FROM 1 TO NED)
(-N TO PUT DELAYED GAMMAS IN GROUP N OF COUPLED SET)
HEDNAM NAME OF REACTION FROM MATXS
EDFACT MULTIPLIER (DEFAULT=1)
HEDMAT ISOTOPE NAME FROM MATXS (DEFAULT=BLANK)
IF BLANK, USE SPECIFICATION FOR ALL ISOTOPES
REPEAT CARD 9 NEDS TIMES
CARD 10 COLLAPSE SPECIFICATIONS (IF ICOLL.NE.0)
INPUT NUMBER OF FINE GROUPS IN EACH COARSE GROUP
CARD 11 INPUT FLUX FUNCTION (INITF=1 ONLY)
INWT FLUX FOR FINE GROUPS TO BE USED FOR
ALL ORDERS AND ALL REGIONS
SPECIAL INPUT VALUES
HED=*CHI* THIS POSITION TO CONTAIN FISSION CHI
HEDNAM=*CHI* DITTO
HED=*TRD* THIS POSITION TO CONTAIN TRANSPORT
CROSS SECTION FOR DIFFUSION. IF A P1 FLUX
IS GIVEN OR COMPUTED, THE INFLO DEFINITION
WILL BE USED. OTHERWISE, OUTFLO WILL BE USED.
HEDNAM=*TRD* DITTO
HED=*GAM* THIS POSITION TO CONTAIN THE FIRST OF NGG GAMMA
PRODUCTION EDITS
TRANSX comes with 11 sample problems, which can also be used to
learn how to prepare TRANSX input decks for typical problems. The
sample problems are:
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