Re: about muon coincidence in undreground lab

From: Yung-Shun Yeh (adair.py94g@nctu.edu.tw)
Date: Tue Jul 03 2007 - 19:22:39 CEST

  • Next message: Vasilis Vlachoudis: "Re: about muon coincidence in undreground lab"

    Dear all,

    Thanks for your kindly help. The problem of the non-detection of muon
    tracker has been solven. The problem is the geometry problem, Now It can
    take muon information in simulation! Thanks for Roesler's instrutions.

    But I encountered another trouble, while I put the realistic muon
    distribution in our lab. If the muon event become large, It would crash.

    /home/adair/fluka/flutil/rfluka: line 311: 2645 Aborted
    (core dumped) ${EXE} <$INPF 2>$LOGF >$LOGF

    But if the muons are mono-directional, and be shot from the ceiling to the
    liquid scintillator. It will be ok.

    Attached are err and relavant file, I looked up the past posts, and found
    it may be due to geometry problem. I struggle with it for days, but still
    have no idea to solve it. Please give me instrucitons! Thank everyone!

    This is the relavant msg,
    http://www.fluka.org/web_archive/earchive/new-fluka-discuss/0756.html

    Best regards,
    Yung-Shun

    On 6/28/07, Stefan Roesler <sroesler@mail.cern.ch> wrote:
    >
    > Dear Yung-Shun,
    >
    > Your geometry contains errors. All points in BL are also contained in the
    > Air-region R4. Try the following to indicate the problematic areas:
    >
    > GEOEND 1.000e+02 1.000e+02
    > 3.000e+02-1.000e+02-1.000e+02-1.000e+01DEBUG
    > GEOEND 1.000e+02 1.000e+01 1.000e+02 &
    >
    > Regards
    > Stefan
    >
    >
    > On Wed, 27 Jun 2007, Yung-Shun Yeh wrote:
    >
    > > Dear Roesler,
    > >
    > > Thanks for your reply. Sorry for my ambiguous description.
    > >
    > > In my original simulation, I used a source subroutine to get primary
    > muons.
    > > For a simple case, I supposed a muon beam with energy 100GeV just at +z
    > > direction (0,0,1000) shoot into the lab(the direction is -z), and the
    > > detector is at center of geometry. I wish if a muon go through all of
    > the
    > > three fold layers(region RT, RM, and RB), the MuonTracker would record
    > its
    > > muon id (NCASE). But I don't know how to do this, I initially recorded
    > the
    > > informations occured in any three fold layer and liquid scinllator. It
    > seems
    > > like every muon will be recorded in all three fold layers and liquid
    > > scintillator, but I only got the informations occured in liquid
    > scinllator.
    > > There is no interaction between muon and three fold layers. I don't
    > know if
    > > my configurations of geometry or others are wrong. Or better way can
    > achieve
    > > this purpose. Thank you very much.
    > >
    > > Attached is correct files. In the mgdraw.f file, the code which is used
    > to
    > > take data of muon is labeled "**** Record the Muon information in
    > specific
    > > region Start ****". Thank you very much!
    > >
    > > Best regards,
    > > Yung-Shun
    > >
    > >
    > >
    > >
    > > On 6/26/07, Stefan Roesler < sroesler@mail.cern.ch> wrote:
    > > >
    > > > Dear Yung-Shun
    > > >
    > > > I am not sure that I understand your problem. After commenting out the
    > > > unclosed pre-processor directive just after the ASSIGNMAT cards and
    > > > commenting the SOURCE card (since you didnt send the source routine) I
    > get
    > > > entries into all three files BoundaryNeutron, MuonTracker and
    > SRCEPART.
    > > >
    > > > Could you please explain your problem in more detail?
    > > >
    > > > Best regards
    > > > Stefan
    > > >
    > > >
    > > >
    > >
    >
    > --
    > ___________________________________
    >
    > Stefan Roesler
    > CERN, SC/RP
    > CH-1211 Geneva 23
    > Switzerland
    >
    > Phone: +41-22-7679891
    > Fax: +41-22-7669639
    > E-mail: Stefan.Roesler@cern.ch
    >






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