JAEA-Data/Code 2007-004 - Welcome to Research Group for ...

transverse leakage, the neutron balance in the system is not satisfied. This
correction does not work if DFM1=0.0 is entered.
8 XNF Normalization factor for fission source
If XNF=0.0, no normalization is done. (suggested option)
If XNF ≠ 0.0 and IEVT>0, the total fission source is normalized to XNF.
If XNF ≠ 0.0 and IEVT=0, The total fixed source is normalized to XNF and the
fission source, if any, is not normalized.
9 PV Parametric eigenvalue (k 0 or α 0 ) to be converged in the search calculation
(effective for IEVT>1)
If IPVT=0, PV=0.0,
If IPVT=1, PV= k 0 (Usually, k 0 =1.0 for α search)
If IPVT=2, PV= α 0
10 RYF Relaxation factor for the convergence criterion of total scattering and up-scattering.
The criterion =EPS/RYF (suggested value = 0.5)
11 XLAL Point flux convergence criterion in the inner iterations if XLAL>0.0.
(suggested value = 2.0*EPS)
12 XLAH Search control parameter (effective if IEVT>1)
Upper limit for 1.0
− λ1
used in the linear search.
Normally, XLAH = 0.05.
13 EQL Search control parameter (effective if IEVT>1)
When
New Old
1 λ 1
λ − 1)
New parameter modifier to prevent oscillation in the linear search calculation.
Normally, XNPM=0.75.
Block-00T Termination of control numbers /A3/
Enter ’00T’.
72