CCC-0248 SWAN-PPL.

1. NAME OR DESIGNATION OF PROGRAM:  SWAN-PPL.
Code System for Analysis and Optimization of Fusion Reactor Nucleo-  nic Characteristics.

3. DESCRIPTION OF PROBLEM OR FUNCTION

Given the material density profiles which describe a one-dimensional reference system with a neutron source, SWAN will calculate, and optionally implement, density changes so as to optimize a single functional parameter of the system.

4. METHOD OF SOLUTION

The one-dimensional discrete-ordinate transport code ANISN is used to calculate flux and adjoint distributions for specified sources. The code SWIF calculates first-order estimates of the effect of material density changes on a goal functional, and from these evaluates effectiveness functions for the substitution of one material for another. Density distribution changes are then calculated which would optimize the goal functional, optionally subject to a constraint of holding another functional constant (to first order).

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

SWAN is not designed to analyze critical systems; it assumes that there is a fixed source, as in shielding or fusion reactor applications. Otherwise it is compatible with ANISN. All arrays are variably-dimensioned, so that there are no restrictions on individual dimensions.

6. TYPICAL RUNNING TIME

It is difficult to choose a "typical" problem: the sample case executes in 6 seconds on the IBM 360/91. The bulk of the time is spent evaluating the fluxes and adjoints in  ANISN.

NEA-DB executed the test cases on IBM 3081. Required CPU times are summarized in the following table:

                    Code      time (sec)
                    ----      ----------
                    AREAD         0.10
                    LIBMAK        0.34
                    LIB GEN       0.12
                    ANISN/PPL     0.65
                    SIZERS        0.05
                    SWAN LIB GEN  0.12
                    SWAN-PPL      0.97

7. UNUSUAL FEATURES OF THE PROGRAM:

8. RELATED AND AUXILIARY PROGRAMS

    AREAD:Input Data Processor.
    LIBMAK:ANISN-Type Binary Data Library Manipulator.
    ANISN-PPL-SWAN Library Processor: Data Generator.
    ANISN-PPL:One-Dimensional Discrete Ordinates Radiation
              Transport Module (CCC-0253).
    SIZERS:Storage Requirement Calculator.
    SWIF:Perturbation Calculation and Optimization Module.

10. REFERENCES:

- W.J. Price, Jr.:
  Notes on Installing the SWAN Package (March 1974)
- E. Greenspan, W.J. Price,Jr. and H. Fishman:
  A Code for the Analysis and Optimization of Fusion Reactor
  Nucleonic Characteristics.
  MATT-1008  (November 1973)
- W.J. Price, Jr.:
  A Revised Version of the ANISN Code.
  MATT-1035  (April 1974)
- W.J. Price, Jr.:
  AREAD "An Input Data Processing Routine"
  MATT-1034  (March 1974)
- W.J. Price, Jr.:
  LIBMAK: "A Program to Manipulate ANISN-Type Binary Libraries"
  MATT-1036  (March 1974)
- E. Greenspan:
  A Method for the Optimization of Fusion Reactor Neutronic
  Characteristics.
  MATT-981   (April 1973)

11. MACHINE REQUIREMENTS:

Main storage requirements for running the test case on  IBM 3090 are summarized in the following table:

                 Code         main storage
                 ----         ------------
                 AREAD             192K
                 LIBMAK            368K
                 ANISN LIB GEN     200K
                 ANISN-PPL         440K
                 SIZERS            172K
                 SWAN LIB GEN      200K
                 SWAN-PPL          580K

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

MVS/XA (IBM 3090).

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  ANISN
and SWIF are processed using the OVERLAY feature.

15. NAME AND ESTABLISHMENT OF AUTHOR

P. Levin and E. Greenspan
Nuclear Research Center - Negev
P.O. Box 9001
Beer-Sheva
Israel

File name	File description	Records
CCC0248_03.001	INFORMATION FILE	106
CCC0248_03.002	AREAD SOURCE	645
CCC0248_03.003	AREAD TEST SOURCE	28
CCC0248_03.004	AREAD TEST CASE INPUT DATA	38
CCC0248_03.005	LIBMAK SOURCE	1551
CCC0248_03.006	LIBMAK DD CARDS	17
CCC0248_03.007	LIBMAK LIBRARY	238
CCC0248_03.008	PPL-ANISN/SWAN LIBRARY PROCESSOR	58
CCC0248_03.009	JCL FOR WRITING PPL-ANISN LIBRARY	10
CCC0248_03.010	PPL-ANISN LIBRARY DATA	145
CCC0248_03.011	PPL-ANISN JCL	6
CCC0248_03.012	PPL-ANISN SOURCE	4999
CCC0248_03.013	PPL-ANISN OVERLAY CONTROL CARDS	10
CCC0248_03.014	PPL-ANISN DD CARDS	14
CCC0248_03.015	PPL-ANISN TEST CASE INPUT DATA	67
CCC0248_03.016	SIZERS SOURCE	299
CCC0248_03.017	SIZERS INPUT DATA	5
CCC0248_03.018	JCL FOR WRITING SWAN LIBRARIES	12
CCC0248_03.019	SWAN LIBRARY DATA	168
CCC0248_03.020	SWAN JCL	6
CCC0248_03.021	SWAN SOURCE	7482
CCC0248_03.022	SWAN OVERLAY CONTROL CARDS	15
CCC0248_03.023	SWAN DD CARDS	32
CCC0248_03.024	SWAN TEST CASE INPUT DATA	99
CCC0248_03.025	PPL-ANISN: CHANGE, JCL, SOURCE	4849
CCC0248_03.026	AREAD TEST CASE OUTPUT	187
CCC0248_03.027	LIBMAK TEST CASE OUTPUT	276
CCC0248_03.028	LIBRARY PROCESSOR OUTPUT (ANISN)	224
CCC0248_03.029	PPL-ANISN OUTPUT	854
CCC0248_03.030	SIZERS OUTPUT	38
CCC0248_03.031	LIBRARY PROCESSOR OUTPUT (SWAN)	256
CCC0248_03.032	SWAN TEST OUTPUT	1457