Dear colleagues,
I encountered a problem in FLUKA when simulating an experiment of a
proton beam interacting with a solid target in vacuum, which can be
reduced to a simple simulation to reproduce the error as follows:
A proton beam is shot from the source position at (0,0,0) in +z
direction towards a solid RPP target in vacuum sitting at z=10cm with
one face being parallel to an XY plane. The Extensions are Xmin = 0,
Xmax = 5, YMin = -2.5, Ymax = 2.5, Zmin = 10, Zmax = 15.
It seems that FLUKA has problems, when protons are hitting the face of
the RPP parallel to one face, since the .err file reports:
Geofar: Particle in region 3 (cell # 0) in position
0.000000000E+00 0.000000000E+00 1.000010264E+01
is now causing trouble, requesting a step of 5.118263514E-04 cm
to direction -9.417213493E-03 8.622442818E-04 9.999552853E-01,
error count: 0
R2: 0.000000000E+00 R3: 1.000010264E+01 cm
X*U (2D): 0.000000000E+00 X*U (3D): 9.999655489E+00 cm
X*UOLD(2D): -0.000000000E+00 X*UOLD(3D): 1.000006331E+01 cm
Kloop: 88, Irsave: 3, Irsav2: 3, error code: -3
Nfrom: 21
old direction -6.589281883E-05 -2.803760406E-03 9.999960673E-01,
lagain, lstnew, lsense, lsnsct F F F F
Particle index 1 total energy 9.482567258E-01 GeV Nsurf 0
We succeeded in saving the particle: current region is n. 2 (cell # 0)
Also the .log file and .out file report:
Abort called from GEOFAR reason TOO MANY ERRORS IN GEOMETRY: STOP Run
stopped!
STOP TOO MANY ERRORS IN GEOMETRY: STOP
Please find my inputfile for this testcase attached.
Sincerely,
Franz Englbrecht
__________________________________________________________________________
You can manage unsubscription from this mailing list at
https://www.fluka.org/fluka.php?id=acc_info
- application/octet-stream attachment: beam.inp
Received on Fri May 06 2016 - 15:25:04 CEST