last modified: 07-DEC-2001 | catalog | categories | new | search |

CCC-0696 LAHET 2.8.

LAHET 2.8, Code System for High Energy Particle Transport Calculations

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1. NAME OR DESIGNATION OF PROGRAM:  LAHET 2.8
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
LAHET 2.8 CCC-0696/01 Arrived 07-DEC-2001

Machines used:

Package ID Orig. computer Test computer
CCC-0696/01 UNIX W.S.
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3. DESCRIPTION OF PROGRAM OR FUNCTION

LAHET2.8 is typically used for transport calculation for nucleons and pions in the medium energy range within a complex geometry. Results estimated include particle fluxes, particle production, energy deposition, activation and material damage. LAHET may also be used to calculate differential particle production cross sections from the models included in the code.
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4. METHODS

Transport of particles includes Gaussian multiple Coulomb scattering with Gaussian range straggling for charged particles. Nuclear interactions are described by the intranuclear cascade/evaporation/fission model (Bertini or Isabel Inc. models) and nuclear elastic scattering is included for nucleon transport. The geometric description is that adapted from MCNP Version 3A. The transport of photons and low-energy neutrons produced in a LAHET calculation is accomplished by linking to MCNP Version 4B or 4C through a particle source file.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The recommended upper limit for nucleon transport is 3.5 GeV; for pions, it is 2.5 GeV. Higher energies are possible, but the interaction physics is problematic. Muons are transported without nuclear interaction. Hydrogen and helium ions are generally restricted to interactions below 1 GeV/amu. Complete utilization REQUIRES the installation of MCNP Version 4B or 4C and the associated cross section libraries. MCNP is not included in LAHET but is available as CCC-700/MCNP4C and DLC-200/MCNPDATA..
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6. TYPICAL RUNNING TIME

For realistic calculations, running times are typically a few hours to a few days, including an MCNP execution.
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8. RELATED OR AUXILIARY PROGRAMS

AUXILIARY PROGRAMS:
HCNV and TRX: Convert LAHET ASCII data to binary.
PRPR: Pre-processor for extracting various hardware versions.

RELATED DATA LIBRARIES:
Libraries specific to the LAHET Bertini model are included in a file called BERTIN. Gamma production cross sections from spallation products are included in a file called PHTLIB.
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9. STATUS
Package ID Status date Status
CCC-0696/01 07-DEC-2001 Masterfiled Arrived
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10. REFERENCES

- R. E. Prael and H. Lichtenstein,
"User Guide to LCS: The LAHET Code System,"
LA-UR-89-3014 (September 1989).
http://www-xdiv.lanl.gov/XCI/PROJECTS/LCS/lahet-doc.html
CCC-0696/01, included references:
- R. E. Prael; "Installation of the LAHET Code System with LAHET2.8,"
LA-UR-00-4454 (September 18, 2000).
- R. E. Prael and D. G. Madland, "The LAHET Code System with LAHET2.8,"
LA-UR-00-2140 (January 2000).
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11. HARDWARE REQUIREMENTS

LAHET2.8 runs on either a CRAY or UNIX workstation. Machine specific patches are included for Unicos, SGI IRIX, IBM AIX, Sun Solaris, and HP-UX. LAHET does not run on personal computers.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0696/01 FORTRAN-77
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13. SOFTWARE REQUIREMENTS

LAHET2.8 requires a Fortran 77 compiler under a Unix operating system. LAHET 2.8 was tested at RSICC on the following machines:

SUN UltraSparc 60 under Sun OS 5.6 using f77 5.0

IBM 43P Model 260, running AIX 4.3. with XLF 6.1

HP B1000 under HP-UX B.10.20 using f77 V0.20
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by:
                Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.

Developed by:   Group X-5,
                Los Alamos National Laboratory,
                Los Alamos, New Mexico, U.S.A.
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16. MATERIAL AVAILABLE
CCC-0696/01
696mfmws.txt  List of files
C696.pdf  Documentation
Readme.rsi  Readme file
C696tar0.gz compressed file which contains:
TESTS directory
GENERAL directory
INSTALL directory
SGI directory
AIX directory
HPUX directory
SUN directory
UCOS directory
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17. CATEGORIES
  • A. Cross Section and Resonance Integral Calculations
  • J. Gamma Heating and Shield Design

Keywords: charged particles, neutron, protons.