Common issues
The simulation finishes successfully but the highest loss location doesn't make sense, for example is at a TCT
If the highest losses are observed, for example, at the TCTs, several possible error sources have to be considered:
- The initial offset in x,xp,y,yp in the
gpdist_config.txt
file was often not set correctly. Check if the angle and offset are in line with the crossing angle and separation bump offset in the Twiss file generated along with the generation of thefort.2
. - The parameter
SSHIFT
in thegpdist_config.txt
file could be set wrongly. - The collimators must be correctly aligned around the closed orbit. If the Twiss file used with the preprocessing script
FLUKA_builder.py
is not reflecting the optics in thefort.2
this can result in a wrong alignment of the collimators and subsequently in the interception of particles which are in reality not hitting the collimator.
Simulations can't be submitted
When submitting the simulations via HTCondor the following error message appears:
DCSchedd::spoolJobFiles:7002:File transfer failed for target job
ERROR: Failed to spool job files.
When cheking out the queue using condor_q
, the following info appears:
-- Failed to fetch ads from: <137.138.156.150:9618?addrs=137.138.156.150-9618&alias=bigbird13.cern.ch&noUDP&sock=schedd_1763_d98e_32> : bigbird13.cern.ch
SECMAN:2007:Failed to end classad message.