How to simulate the secondary particles of underground muons

From: Wang RuiGuang (wangrg@mail.ihep.ac.cn)
Date: Mon Oct 16 2006 - 15:41:17 CEST

  • Next message: Sebastien WURTH: "Re: How to simulate the secondary particles of underground muons"

    Dear Fluka users and authors,

     I am a new Fluka user. Our aim is to detect neutrons in a underground
    experiment hall. The detector is located in the water pool inside of the hall.
    I want to know the secondary particle's performance of underground muons in
    rocks, air(a hall) and water pool by Fluka simulation. Suppose the incident
    muons with 100 GeV in position of 2 meters inside of rock above the hall. For
    those secondary particles, I like to know their the track length, energy loss,
    how to decay, .... . Based on a sample file, I wrote a input card. A part of
    it is:

    *... ....1.... ....2.... ....3.... ....4.... ....5.... ....6.... ....7.... ....8
    USRBDX -1.0 209.0 -47.0 3.0 4.0 1.0E6 pi1
    USRBDX 1.0 0.001 100.0 &
    USRBDX -1.0 8.0 -47.0 3.0 4.0 1.0E6 Neutron1
    USRBDX 0.05 0.001 50.0 &
    USRBDX -1.0 209.0 -48.0 4.0 5.0 1.0E6 pi2
    USRBDX 1.0 0.001 100.0 &
    USRBDX -1.0 8.0 -48.0 4.0 5.0 1.0E6 Neutron2
    USRBDX 0.05 0.001 50.0 &
    *... ....1.... ....2.... ....3.... ....4.... ....5.... ....6.... ....7.... ....8
    USRTRACK 1.0 207.0 -49.0 3.0 1.5E9 100. airPi
    USRTRACK 0.1 0.001 &
    USRTRACK 1.0 8.0 -49.0 3.0 1.5E9 50. airN
    USRTRACK 0.5 0.001 &
    USRTRACK 1.0 209.0 -50.0 4.0 9.0E8 100. waterPi
    USRTRACK 0.1 0.001 &
    USRTRACK 1.0 8.0 -50.0 4.0 9.0E8 50. waterN
    USRTRACK 0.5 0.001 &
    *... ....1.... ....2.... ....3.... ....4.... ....5.... ....6.... ....7.... ....8
    USRBIN 15.0 8.0 -51.0 500.0 500.0 900.0 Neutron
    USRBIN -500.0 -500.0 0.0 1.0 1.0 450.0 &
    USRBIN 15.0 208.0 -52.0 500.0 500.0 900.0 Edeposit
    USRBIN -500.0 -500.0 0.0 1.0 1.0 450.0 &

    Five runs is ended soon with a start of 100. However, the *_sum.lis or
    *_tab.lis is zero for most fluencies and errors. A very few of them is not
    zero but 99% for errors. I don't know why. hope to get your help!

    By the way, what available options is more suitable to show particle's decay
    and propagation in the matters, especially for pai and neutron?

    Best regards

    R.G. Wang

  • Next message: Sebastien WURTH: "Re: How to simulate the secondary particles of underground muons"

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