From: Michela Cozzi (michela.cozzi@bo.infn.it)
Date: Mon Jun 16 2003 - 12:05:09 CEST
Hi, in the new version of FLUKA,
I have a problem in setting the beam properties, in particular in the
angular distribution.
In the input BEAM, I set the WHAT(3) equal to 3 mrad in this way:
BEAM 2.0 -3.0 -1.0
PION-
BEAMPOS 0.0 0.0 -2.0
But then, looking to the file.out, I have 30 mrad!
Do you know where the problem is?
******* Fluka beam properties:
Beam particle: PION- Id: 14 (Fluka) -211 (PDG) Charge: -1 Baryon n.:
0
Mass: 0.1396 (GeV/c^2) Mean life: 2.6030E-08 (s) Weight:
1.000
Average beam momentum: 2.000000 GeV/c
Average beam kinetic energy: 1.865294 GeV
Momentum deviation at FWHM (Rectang.): 0.0000000 GeV/c
Beam hit position: 0.00000000 0.00000000 -2.00000000
cm
Beam direction cosines: 0.00000000 0.00000000 1.00000000
Emittance option not used.
Beam width in X-direction at FWHM (Gaussian): 1.0000 cm
Beam width in Y-direction at FWHM (Gaussian): 1.0000 cm
Beam divergence at FWHM (Gaussian): 30.0000 mrad
Region number of the spot is: 2
Thanks,
Michela
-------------------------------------------------
Michela Cozzi
University of Bologna
Physics Department - INFN
Viale Berti Pichat, 6/2 40127 Bologna
ITALY
Tel: +39-(0)51 209 5234
Fax: +39-(0)51 209 5269
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