last modified: 16-DEC-1994 | catalog | categories | new | search |

CCC-0618 PTRAN.

PTRAN, Proton Transport for 50 to 250 MeV by Monte-Carlo

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1. NAME OR DESIGNATION OF PROGRAM:  PTRAN.
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2. COMPUTERS
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Program name Package id Status Status date
PTRAN CCC-0618/01 Tested 16-DEC-1994

Machines used:

Package ID Orig. computer Test computer
CCC-0618/01 PC-80386 PC-80486
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3. DESCRIPTION OF PROGRAM OR FUNCTION

PTRAN, Version 1.1, uses a Monte Carlo program to calculate the transport of proton beams through extended media. The PTRAN code uses 50 to 250 MeV beams through water phantoms. Multiple scattering and Coulomb interaction  energy loss mechanisms are taken into account along with nonelastic  nuclear interactions. PTRAN calculates deposition of energy as a function of depth and radial distance from the beam, energy spectra  of the primary protons as function of depth. Both 1 and 3 dimensional calculations are available.
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4. METHOD OF SOLUTION

The PTRAN system uses several cross-section preparation programs and two main codes, PTRAN3D and PTRAN1D. The heart of the calculations is the Monte Carlo model which is based on the condensed-random-walk method (BERGER, 1963), and takes into account the following types of events occurring in successive short  track segments: (a) energy-loss straggling in Coulomb collisions with atomic electrons, (b) multiple-scattering deflections due to elastic scattering by atoms, and (c) energy loss in nonelastic nuclear reactions. Data preparation programs facilitate the sampling of energy losses (VAVILOV, 1957) and angular deflections (MOLIERE, 1948). The initial proton stopping powers and ranges in water use PSTAR (NISTIR 4999, RSIC PSR-330).
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The codes PTRAN1D (PTRAN1DX & PTRAN1DY) and PTRAN3D are memory intensive, and need 7.5 Mbytes of RAM to execute. The support codes, data conversion and preparation codes (PTSUM, PARAM4, MPREP, VPREP, MCON, VCON) need 4 Mbytes RAM. The code PTRAN3D ran an example that took 56 minutes on  a 80486/87 50 MHz machine. The math co-processor is mandatory with the executables supplied which used the Lahey Fortran F77L3 compiler and Phar Lap DOS Extender/Linker.
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6. TYPICAL RUNNING TIME

Using the 80486/87 50 MHz PC, the PTRAN3D took 56 minutes of run time, the PTRAN1D took 35 minutes. On a 80386/87 33 MHz PC, all the data preparation programs were run using less than a minute, including the interactive requests for parameter input.
CCC-0618/01
The test case included in this package was executed on  a 66-MHz PC/80486. Run times for the main programs were: 42 minutes  for PTRAN3D; 26 minutes for PTRAN1D.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
CCC-0618/01 16-DEC-1994 Tested at NEADB
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10. REFERENCES

- M.J. Abramowitz and I.A. Stegun:
  Handbook of Mathematical Functions
  National Bureau of Standards Applied in Computational Series 55
  (1964).
- M.J. Berger:
  Monte Carlo Calculation of the Penetration and Diffusion of
  Charged Particle
  Methods in Computational Physics, Vol. 1, p. 135, Academic Press,
  N.Y. (1963).
- M.J. Berger:
  ESTAR, PSTAR, and ASTAR - Computer Codes for calculating Stopping
  Power and Range Tables for Electrons, Protons, and Helium Ions,
  National Institute of Standards and Technology Report,
  NISTIR 4999, (1992) (RSIC PSR-330).
- H.A. Bethe:
  Moliere's Theory of Multiple Scattering
  Phys. Rev. 89,1256 (1953).
- D. Kahaner, C. Moler, S.Nash:
  Numerical Methods and Software
  Prentice-Hall (1989).
CCC-0618/01, included references:
- M.J. Berger:
  Proton Monte Carlo Transport Program PTRAN
  NISTIR 5113 (January 1993).
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11. MACHINE REQUIREMENTS

The executable codes were compiled and linked using Lahey F77L3/EM32 version 5.0 which requires a 80386 w/80387 math co-processor or better. The PTRAN1D and PTRAN3D required 7.5 Mbytes of RAM to run while the other executables need less than 3.5  Mbytes RAM. No special graphics monitor or printer is necessary. The total set of codes with executables, input files, and output files will occupy at least 15 Mbytes of hard disk space.
CCC-0618/01
PTRAN was installed by NEA-DB on a DELL 466/L PC with a 66-MHz 80486 processor and 16 Mbytes of RAM.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0618/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

MS-DOS version 3.3 or higher is required. The memory requirements of several Mbytes of RAM require DOS Extender software or equivalent to access the memory above 640 Kbyte. The Lahey F77L3/EM32 version 5.01 with Phar  Lap's DOS Extender was used to compile and link the executables included in the distribution diskettes. When running these executable programs there needs to be access on the hard drive to a  error file F77L3.EER supplied by Lahey and included in the diskettes.
CCC-0618/01
Installation at NEA-DB was done under MS-DOS Ver.6.2. The source codes were compiled using the Lahey F77L-EM/32 FORTRAN compiler version 5.20.
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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:   National Institute of Standards (NIST)
                Gaithersburg, Maryland, USA
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16. MATERIAL AVAILABLE
CCC-0618/01
File name File description Records
CCC0618_01.001 Information file 203
CCC0618_01.002 RSIC information file 154
CCC0618_01.003 PARAM4 Fortran source code 508
CCC0618_01.004 PARAM4 executable file 0
CCC0618_01.005 Composition data for water 3
CCC0618_01.006 Stopping-power and range table for water 70
CCC0618_01.007 Total nonelastic X-sections for oxygen 5
CCC0618_01.008 Output table, Grid 1 374
CCC0618_01.009 Output table, Grid 2 474
CCC0618_01.010 Output table, Grid 3 702
CCC0618_01.011 Output table, Grid 4 1184
CCC0618_01.012 Output table, Grid 5 2178
CCC0618_01.013 Output array for VPREP4 and MPREP4, Grid 2 220
CCC0618_01.014 Output array for VPREP4 and MPREP4, Grid 3 334
CCC0618_01.015 Output array for VPREP4 and MPREP4, Grid 4 575
CCC0618_01.016 Output for PTRAN1D, PTRAN1DX or PTRAN3D, Gd2 201
CCC0618_01.017 Output for PTRAN1D, PTRAN1DX or PTRAN3D, Gd3 309
CCC0618_01.018 Output for PTRAN1D, PTRAN1DX or PTRAN3D, Gd4 525
CCC0618_01.019 VPREP4 Fortran source code 2965
CCC0618_01.020 VPREP4 executable file 0
CCC0618_01.021 VCON4 Fortran source code 31
CCC0618_01.022 VCON4 executable file 0
CCC0618_01.023 VSAMP4 Fortran source code 132
CCC0618_01.024 VSAMP4 executable file 0
CCC0618_01.025 VSUM4 Fortran source code 204
CCC0618_01.026 VSUM4 executable file 0
CCC0618_01.027 Output file for VCON4, Grid 2 5291
CCC0618_01.028 Output file for VCON4, Grid 3 12176
CCC0618_01.029 Output file for VCON4, Grid 4 32900
CCC0618_01.030 MPREP4 Fortran source code 337
CCC0618_01.031 MPREP4 executable file 0
CCC0618_01.032 MCON4 Fortran source code 30
CCC0618_01.033 MCON4 executable file 0
CCC0618_01.034 MSAMP4 Fortran source code 139
CCC0618_01.035 MSAMP4 executable file 0
CCC0618_01.036 Reduced deflection angles for Moliere distr. 28
CCC0618_01.037 Moliere expansion coefficients f(1) 160
CCC0618_01.038 Moliere expansion coefficients f(2) 164
CCC0618_01.039 Output file for MCON4, Grid 2 7853
CCC0618_01.040 Output file for MCON4, Grid 3 11957
CCC0618_01.041 Output file for MCON4, Grid 4 20633
CCC0618_01.042 PTRAN3D Fortran source file 689
CCC0618_01.043 PTRAN3D executable file 0
CCC0618_01.044 Arrays used for sampling from Gaussian distr 836
CCC0618_01.045 Output from test run 2348
CCC0618_01.046 Auxiliary output for testing run 16
CCC0618_01.047 PTRAN1D Fortran source code 607
CCC0618_01.048 PTRAN1D executable file 0
CCC0618_01.049 PTRAN1DX Fortran source code 690
CCC0618_01.050 PTRAN1DX executable file 0
CCC0618_01.051 PTRAN1DY Fortran source code 594
CCC0618_01.052 PTRAN1DY executable file 0
CCC0618_01.053 PTSUM Fortran source code 308
CCC0618_01.054 PTSUM executable file 0
CCC0618_01.055 Output table from test run 71
CCC0618_01.056 Output array from test run 37
CCC0618_01.057 Message errors from Lahey compiler 0
CCC0618_01.058 Boundary information file 31
CCC0618_01.059 DOS file-names 58
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17. CATEGORIES
  • J. Gamma Heating and Shield Design

Keywords: Coulomb field, Monte Carlo method, inelastic scattering, protons, transport.