estimating neutron rate using USRTRACK

From: Tang, Alfred (
Date: Fri Mar 16 2007 - 20:35:27 CET

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    Dear FLUKA users,
    I am trying to use USRTRACK to estimate the muon-induced neutron rate in a liquid scintillator. I use a realistic muon profile as input and propagate the muons through a realistic detector. I measure the track lengths of muon, neutron and neutron balance of the LS region and hope to deduce an estimate for the neutron rate Rn as follow:
    where Rmu=muon rate on the LS region, A=neutron_tracklength/muon_tracklength, B=neutron_balance/muon_tracklength and C=sqrt(3). A has the meaning of the ratio of the fluence of the neutron and the fluence of muon. B hopefully gives me the number of neutrons per primary muon. Assuming that the tracklength of neutron is measured only along the direction parallel to the muon track, the factor C=sqrt(3) is meant to convert neutron fluence into neutron rate.
    Since I do not know how FLUKA score tracklength, I do not know if my assumptions are correct. If I am right in assuming the things aforementioned, I am able to calculate a neutron rate for KamLAND that agrees with the experimental result exactly. Can anyone comment on the correctness of this calculation?

    Alfred Tang
    Physics Department
    Kansas State University
    13 Cardwell Hall
    Manhattan, KS 66506
    (785) 532-1699


  • Next message: Rat Gunasingha: "optical photons for electron from muon decay and muon"

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