RE: fluence spectra

Hello Francesco,

Thank you very much for your help. The USRTRACK results have been obtained but only when I use another machine. I still have an error on ploting using my PC. The usetrack files were not created during processing. The error was '' /bin/sh: /home/la0040/fluka/flutil/ustsuw: not found ''. Could you please help. Do I need to re-install FLUKA.

Best regards
Leena

________________________________________
From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] On Behalf Of Francesco Cerutti [Francesco.Cerutti_at_cern.ch]
Sent: 20 September 2010 15:10
To: Al-Sulaiti L Ms (PG/R - Physics)
Cc: msantana_at_SLAC.Stanford.EDU; fluka-discuss_at_fluka.org
Subject: RE: fluence spectra

Dear Leena,

1. there are still errors in your geometry. You must remove the B16
cylinder from the first zone of the AR2 region, in order to avoid region
overlap

2. the culprit of the failing USRTRACK scoring seems to be just a "H"
which took the place of a "R". If you ask for PROTON instead of PHOTON,
you will get the spectrum evolution as in attachment.
Note that the integrated fluence takes very low values and its decrease
along the six water target segments is anomalous (one would not expect
such a large reduction in the last half cm). This is due to the fact that
indeed only a tiny fraction of your beam impacts the target, since you
make it travelling a quite long path in air (and so it obviously gets
scattered)

All the best

Francesco

**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. ++41 22 7678962
fax ++41 22 7668854
Received on Thu Sep 30 2010 - 18:03:39 CEST