NESC0561 TOKMINA/TOKMINA2

1. NAME OR DESIGNATION OF PROGRAM:  TOKMINA/TOKMINA2

3. DESCRIPTION OF PROBLEM OR FUNCTION

TOKMINA  finds   the  minimum
magnetic field,  Bm, required  at the toroidal  coil of  a Tokamak
type  fusion  reactor  when  the input  is  beta(ratio  of  plasma
pressure   to  magnetic   pressure),  q(Kruskal-Shafranov   plasma
stability factor),  and y(ratio  of plasma  radius to  vacuum wall
radius: rp/rw) and arrays of PT(total  thermal power from both d-t
and tritium  breeding reactions), Pw(wall  loading or  power flux)
and TB(thickness of blanket), following  the method of Golovin, et
al.  TOKMINA2 finds the total power, PT, of such a fusion reactor,
given a specified magnetic field, Bm, at the toroidal coil.

4. METHOD OF SOLUTION

TOKMINA:  the aspect  ratio(a) is  minimized,
giving a minimum value for Bm.  TOKMINA2: a search is made for PT;
the value of PT which minimizes Bm to the required value within 50
Gauss is chosen.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Input       arrays
presently are dimensioned at 20.  This restriction can be overcome
by changing a dimension card.

6. TYPICAL RUNNING TIME

   TOKMINA  -  approximately 30  seconds  for  100 sets  of  input
values.
   TOKMINA2 - approximately 1 minute for 700 sets of input values.

7. UNUSUAL FEATURES OF THE PROGRAM

Output  for  each set  of  input
values  are TB,  Bt(toroidal magnetic  field on  the minor  axis),
R(major radius of  the toroid), rp, Rm(distance  between the major
axis and  the blanket in the  midplane), n(density of  the plasma)
and I(plasma current).  These values, as well  as Bm and PT may be
studied as a function of blanket thickness.

8. RELATED AND AUXILIARY PROGRAMS:

10. REFERENCES

I.  N.  Golovin,  Yu.  N.   Dnevstrovsky  and  D.  P.
Kostomarov, Tokamak as a Possible Fusion Reactor - Comparison with
Other C. T. R. Devices, BNES  Nuclear Fusion Reactor Conference at
Culham Laboratory, September 1969.
             A. J. Hatch and J. Etzweiler, A Simplified Parametric
Study  of  Tokamak  Fusion  Reactors,  Proceedings  of  the  Texas
Symposium on Fusion Reactors, November 22-23, 1972, CONF-721111.

11. MACHINE REQUIREMENTS:  160K bytes of core

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:   OS/360.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

15. NAME AND ESTABLISHMENT OF AUTHORS

                 A. J. Hatch
                 Physics Division
                 Argonne National Laboratory
                 9700 South Cass Avenue
                 Argonne, Illinois  60439

File name	File description	Records
NESC0561_01.001	SOURCE PROGRAM EBCDIC (F4)	153
NESC0561_01.002	SAMPLE PROBLEM INPUT DATA	4
NESC0561_01.003	SAMPLE PROBLEM PRINTED OUTPUT	72

File name	File description	Records
NESC0561_02.001	SOURCE PROGRAM EBCDIC (F4)	198
NESC0561_02.002	SAMPLE PROBLEM INPUT DATA	5
NESC0561_02.003	SAMPLE PROBLEM PRINTED OUTPUT	1228