From: Tang, Alfred (atang@phys.ksu.edu)
Date: Sun Aug 19 2007 - 22:30:10 CEST
Hi Yung-Shun,
What I have done for a similar study is to propagate the muons from the surface of the mountain according to a realistic muon profile to a hemispherical rock shield underground of 30m radius. Then I let FLUKA take over the simulation inside the hemispherical rock. You can download my MUSIC muon generator from http://www.phys.ksu.edu/personal/atang/gmusic.tgz if you wish. The muon momenta on the surface of the hemispherical rock are contained in an ASCII file called pxyz.dat as input to FLUKA. In your FLUKA INP file, you need a line with just one word "SOURCE" somewhere between the BEAMPOS and GEOBEGIN cards. If you are following my setup, then you can just use my version of source.f file called source_n.f which is attached with this email. At the end of your FLUKA INP file, you need to specify the number of muons (#muons) by including a line:
START #muons
just before "STOP". (#muons <= number of muons in pxyz.dat)
To run these files, follow these steps:
$ fff source_n.f
$ lfluka -o nfluka -m fluka source.o
$ rfluka -e nfluka your.inp
Of course, nfluka (your FLUKA library) and your.inp (your FLUKA INP file) are arbitrary names which can be anything you want. Hope it helps.
Regards,
Alfred
*****************************************************
Alfred Tang
Physics Department
Kansas State University
13 Cardwell Hall
Manhattan, KS 66506
(785) 532-1699
http://www.phys.ksu.edu/personal/atang
________________________________
From: owner-fluka-discuss@mi.infn.it on behalf of Yung-Shun Yeh
Sent: Fri 8/17/2007 4:17 PM
To: fluka-discuss@fluka.org
Subject: How to vary some parameter automatically per run
Dear FLUKA users,
I don't know if this question is appropriate in this forum.
I am doing a simulation about estimation of muon-induced neutrons. In this simulation, I must vary the energy of primary muon and then do the simulation again. Earlier I varied the energy by hand, but it is not good method. Could anyone teach me any good way to deal with this routine. Thank you very much.
Best regards,
Yung-Shun
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