Executable returns RC=2, Index error

Running and Runtime Errors
1

Dear FLUKA experts,

I’m trying to model an electron beam travelling through a steel encased vacuum beampipe and quadrupole magnet and then scoring dose in a water phantom, but before I add a magnetic field I find that when I try to run my input file, I get the following error:

======================== Running FLUKA for cycle # 1 ========================
Error: “/usr/local/fluka/bin/fluka” executable returned RC=2

nothing shows up in the .out file other than where it stops running, but the .log file reads:
At line 42 of file cascade/dfatwg.f
Fortran runtime error: Index ‘0’ of dimension 2 of array ‘isondx’ below lower bound of 1

Error termination. Backtrace:
#0 0x7fe5ce2517c2 in ???
#1 0x7fe5ce252289 in ???
#2 0x7fe5ce25289a in ???
#3 0x56316866b78a in dfatwg_
at cascade/dfatwg.f:42
#4 0x563168570187 in master.0.cmpcrd
at main/cmpcrd.f:469
#5 0x563168405213 in flukam_
at main/flukam.f:2675
#6 0x563168402f10 in fluka
at main/fluka.f:77
#7 0x563168402f10 in main
at /root/rpmbuild/BUILD/fluka-4/src/usflmd.inc:15

I have no idea what this type of error means, I have checked the geometry viewer and that is not showing up any issues, if anyone has any thoughts on how I could fix this I would really appreciate it!

Thanks,
Lucy
QuadwPipe.inp (4.2 KB)
QuadwPipe001.log (527 Bytes)
QuadwPipe001.out (27.4 KB)

3

Hello Lucy,

Upon first glance, it looks like you defined plenty of materials with empty atomic number Z. FLUKA then expects there should be a COMPOUND with the same name, finds none, and complains (see the manual for the MATERIAL and COMPOUND cards). Instead it looks like you’re defining single-element materials. Completing the MATERIAL cards with empty Z should fix this issue.

Some of the single-element materials you indicate are already pre-defined in FLUKA (see manual), and it looks like you’re asking for them with exactly the same density as the pre-defined one (?), which is somewhat redundant. Unless I’m overlooking something essential, you could get by without them.

Cheers,

Cesc

1 Like
4

Hi Cesc,

Thanks for your reply, I can’t believe I didn’t notice that! I added the atomic numbers as you suggested and it now runs.

Thanks again!
Lucy