Dear FLUKA experts,
I am trying to transport isotopes using a user written source. But I
don't know why it crashes saying
Stepop, dp/dx=<0!! ij, z, a, mmat, ekin, pthrmx, dpdx0 -2 23 49 6 0.6
7.80517436 -543.194742
Abort called from STEPOP reason dp/dx=<0 Run stopped!
STOP dp/dx=<0
in .err file.
This happened regardless of WHAT(1) of BEAM card.
It seems to have something to do with source energy because when I
overwrite source kinetic energy (for example 18.1824493218291 -> 0.50),
it runs.
I would appreciate if someone could help me to run this simulation.
Please find the attached files if necessary.
coll.inp: input file
source_frag.f: modified source.f file. Source file directory is defined
in the 71st line.
iso-source.dat: source information. the columns are atomic number, mass
number, x,y,z coordinates, x,y,z angular cosines, kinetic energy (not
divided by the number of nucleons), statistical weight, respectively
from left to right.
Many thanks in advance,
Ogawa
-- ************************************************** Department of Nuclear Engineering and Management Graduate School of Engineering The University of Tokyo Tatsuhiko Ogawa E-mail: ogawa_at_n.t.u-tokyo.ac.jp togawa_at_cern.ch Tel: 090-9241-4166 (+81-90-9241-4166) 03-5841-2905 (+81-3-5841-2905) Facsimile: 03-3813-2010 (+81-3-3813-2010) Address: 2-11-16, Dept. Nucl. Eng. Annex R-230 Yayoi Bunkyo-ku, Tokyo 113-0032 **************************************************
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