Problem 891 - Infinite loop in Muon- Capture
Summary: Infinite loop in Muon- Capture
Status: RESOLVED FIXED
Alias: None
Product: Geant4
Classification: Unclassified
Component: processes/hadronic/stopping (show other problems)
Version: 8.1
Hardware: PC Linux
: P2 critical
Assignee: dennis.herbert.wright
URL:
Depends on:
Blocks:
 
Reported: 2006-09-20 19:14 CEST by liuhm
Modified: 2006-12-28 22:31 CET (History)
0 users

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Description liuhm 2006-09-20 19:14:00 CEST
Dear Geant4 experts,

We are using Gean4.8.1.p01 and hadronic package QGSP
for our detectorsimulation. We find that for some muon-
at rest, an infinite loop occurs in G4MuonMinusCaptureAtRest.

We designed a simple program to confirm this program:

The detector is a box filled with our gas (a mixture of He
and propane C3H8), the event generator produce a mu- at rest
in the center of box. After about 50000 event running, the
program goes to infinite loop. We traced the event step and
found the dead-loop in G4MuonMinusCaptureAtRest::DoMuCapture.

Your help will be greatly appreciated.

Huaimin Liu
IHEP, Beijing
Comment 1 dennis.herbert.wright 2006-09-20 19:36:59 CEST
Please send a copy of your main() and any other necessary code to me at
dwright@slac.stanford.edu along with the macro you used to run it.  I will then
try to reproduce the problem.
Comment 2 dennis.herbert.wright 2006-12-28 22:31:59 CET
G4MuonMinusCaptureAtRest re-written by Vladimir Ivanchenko to address infinite
loop problem.  The fixed version is included in Geant4 V8.2.