Hello
I am not sure to have fully understood, but I'll try to give some answers:
The direction of the beam has to be set in the BEAMPOS card. If I
understand, the beam makes a 5 degrees angle with respect to the z azis.
In which plane? x -z or y-z?
I suppose here x:
BEAMPOS 10. 0.0 19. 0.0872 NEGATIVE
With this, all your particles will be directed at 5 degrees from the -z
direction.
The BEAMAXES card is used to define beam width and divergence in a
coordinate system that is not the standard FLUKA one. I mean, when your
beam widths are not in the x and y directions.
In your message, you say that you need a rectangle along y and z. So, you
need a new reference system in which the new x' axis is along the standard
z axis, y can stay the same, and right-hand rule means that z' is along
-x.
Beamaxes accepts the cosines of the new x' and z' axes wrt the old ones:
BEAMAXES 0. 0. 1. -1. 0. 0.
BEAM -.006 38. 1. 1.HEAVYION
(38 cm along the new x, old z , 1 cm along y)
(cards not aligned..)
Hope this helps
Paola
from: kabytayeva <kabytayeva_at_jinr.ru>
Date: Thu, 12 Dec 2019 16:34:37 +0300
Hello Dear FLUKA Experts,
I wanted to simulate a heavy ion beam along the negative z axis which
forms a rectangle along y and z direction 1 x 38 cm2(X axis is the width
of target)_. The beam directed in a direction to the"geometry Z" axis,
at 5 degrees along the negative z axis.
I ask you to check or help, because I think I did it wrong
Thank you very much
========================================================================
С
уважением,Раушан
Кабытаева e-mail:
kabytayeva_at_jinr.ru
Best regards, Raushan Kabytayeva tel: +7(49621)62517
engineer of the RIB group
Scientific and Technical accelerator department
Flerov Laboratory of Nuclear Reactions
International Intergovernmental Organization
Joint Institute for Nuclear Research Joliot-Curie, 6
Bld 131, office 408
141980, Dubna, Moscow region, Russia
===
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
Paola Sala
INFN Milano
tel. Milano +39-0250317374
tel. CERN +41-227679148
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Received on Tue Dec 17 2019 - 18:55:51 CET