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

= 1 Yes
Block-4 Control floating point data /10/
1 EV Eigenvalue guess. It is satisfactory to enter EV=0.0 in SRAC.
2 EVM Eigenvalue modifier used only if IEVT>1.
EV 1 =EV 0 +EVM
3 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
4 XLAL Lambda lower limit for eigenvalue searches (effective if IEVT>1)
lambda is the ratio of (Fission source + Inhomogeneous source, if any) in two
succeeding iterations.
5 XLAH Search lambda upper limit (effective if IEVT>1).
6 XLAX Search lambda convergence precision for second and subsequent values of the
eigenvalue (effective if IEVT>1).
7 EPS Convergence precision.
8 NORM Normalization factor. Total number of particles in system is normalized to this
number if NORM>0. No normalization if NORM=0.
9 POD Parameter oscillation dumper used in eigenvalue searches (effective if IEVT>1).
POD ≤ 0.5 is recommended for α search.
10 BHGT Sighed value of buckling height in cm used to simulate the axial leakage by adding
a pseudo absorption given by
Σ
eff
2
a, g = Σ a,
g + D g B , 2δ
g = 2 * 0.710446λtr,
g = 1.420892/
Σt,
g
83