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energy not conserved [message #1272] Wed, 07 November 2007 15:50
wenzel
Messages: 25
Registered: February 2007
Location: Fermilab
Hi


I am probably doing something wrong. I was shooting different particles with a kinetic energy of 10 GeV onto a dense hydrogen target configured as one sensitive detector with 4 cells.
When I sum up the raw uncorrected energy in he 4 cells I find that the distribution has tails where more energy is deposited than what we shoot in (even accounting for the rest mass of the incident particle)
While I can think of several reasons where energy can get lost
(e.g. leakage or nuclear break up in case of high A targets) getting more out than what we shoot in seems wrong. The default physics list (lcphys) is used. I have attached a tar file with the plots, java analysis file and the detector description files.
Please advice


hans


The tar file contains the following files:
run_lh_e.mac ! mac file to shoot 10 Gev electrons on hydrogen target
run_lh_k.mac ! mac file to shoot 10 Gev electrons on hydrogen target
run_lh.mac ! mac file to shoot 10 Gev electrons on hydrogen target
lh.lcdd ! lcdd file created by GeomConverter
compact_lh.xml ! compact description
AnalyzeCaloHits.java ! Analysis program to cretae the plots
10GeV_e_on_hydrogen.jpg ! plot energy deposit of 10 Gev electrons
10GeV_k-_on_hydrogen.jpg ! plot energy deposit of 10 Gev kaons
10GeV_Pions_on_hydrogen.jpg ! lot energy deposit of 10 Gev pions

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