CCC-0577 ALDOSE.

1. NAME OR DESIGNATION OF PROGRAM:  ALDOSE.

3. DESCRIPTION OF PROGRAM OR FUNCTION

ALDOSE calculates the absorbed  dose rate, dose-rate equivalent rate, and dose-weighted LET as functions of depth in water irradiated by a uniform alpha disk source. In addition, the average LET and average quality factor for  the irradiated water are computed. The source may have a layer of gold, and may be separated from the water by a layer of Mylar. The source may have up to 12 source energies up to 15 MeV. Output data are tabulated as histograms and graphs in files which can be accessed by the user for further processing.

4. METHOD OF SOLUTION

Calculations are based on range-energy tables for alpha rays in gold, Mylar, and water and employ ray tracing. Quality factors are based on ICRP Publication 26. The average LET in a subslab is used to assign a quality factor for the dose that the alpha particle delivers there.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Three materials, 12  energies, up to 15 MeV, slab geometry.

6. TYPICAL RUNNING TIME

The sample problem requires 2.42 minutes on a MicroVax II; 9 minutes on Data General MV/4000; 0.25 minutes on a
VAX 6000; 47 minutes on an IBM PC (4 MHz).

The sample problem of the program ALDOSE was executed in three different machines in the tests performed at the NEA/DB. The corresponding running times are displayed in the following table.
C O M P U T E R                                Running Time (s)
---------------------------------------------------------------
PC Brett - Pentium processor , 75 MHz                 15
DEC VAX 6000/510                                      10
DEC 3000 Model 300X - Alpha AXP Workstation            1.4
---------------------------------------------------------------

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS:

10. REFERENCES:

- T.E. Huston and J.E. Turner:
  A User's Manual for ALDOSE: A Computer Code for Calculating
  Absorbed-Dose Rate, Dose-Equivalent Rate, and Dose-Weighted
  LET as Functions of Depth in Water Irradiated by an Alpha
  Disc Source
  ORNL/M-11618, Oak Ridge National Laboratory (August 1990)
- T.E. Huston and J.E. Turner:
  ALDOSE: A Computer Code to Calculate   Absorbed-Dose Rate,
  Dose-Equivalent Rate, and Dose-Weighted LET as Functions of
  Depth in Water Irradiated by an Alpha-Particle Disc Source
  Health Physics Vol.60, No.4 pp 581-585 (April 1991)

11. MACHINE REQUIREMENTS

ALDOSE runs on the IBM PC and compatibles with a math coprocessor. It was developed on a MicroVax II and tested on a VAX 6000 (VMS) and Data General MV/4000 (AOS/VS).

The program ALDOSE was tested and installed on the following computers: (1) PC-Brett, Pentium processor 75 MHz, with 16 Mbyte of RAM. The filesize of the executable created using the Microsoft compiler and linker is 43 Kbyte. - (2) DEC VAX 6000/510 running OpenVMS 6.0. The peak working set size to execute the sample problem is 372 Kbyte.

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

At the tests conducted at the NEA/DB, the program ALDOSE was installed and the sample problems were executed in the following computers, operating systems and using the compilers indicated: (1) PC/Pentium under MS-DOS 6.2 and using Microsoft Fortran compiler version 5.10; (2) DEC VAX 6000/510 running under OpenVMS 6.0-1 and using the DEC FORTRAN-77 compiler; (3) DEC 3000 Model 300X Alpha AXP Workstation running under DEC OSF/1 V3.2 and using the DEC Fortran (f77) V3.4 compiler

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The
code was written in Fortran 77. Calls for system date and time and OPEN statements must be tailored for each system. The source code contains the necessary statements; the ones not needed are "Commented out." The code was compiled and linked on the IBM PC with Microsoft Version 5.0.

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:   Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.

File name	File description	Records
CCC0577_01.001	Information file of package ALDOSE	212
CCC0577_01.002	Source file of program ALDOSE for VAX system	318
CCC0577_01.003	Source file of program ALDOSE for PC's	321
CCC0577_01.004	Source file of aux. routine SETIO (for PC's)	29
CCC0577_01.005	PC-executable of program ALDOSE	0
CCC0577_01.006	Sample input file with the problem specs	30
CCC0577_01.007	Sample input file with range-energy data	85
CCC0577_01.008	Sample output file (PC)	157
CCC0577_01.009	Aux. output file for producing plots (PC)	157
CCC0577_01.010	Sample output file (VAX)	157
CCC0577_01.011	Aux. output file for producing plots (VAX)	131
CCC0577_01.012	DOS file-names	11