|Message: No photopeak with penelope or livermore models||Not Logged In (login)|
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Hello All, I am irriadiating a crystal with 511 kev Gammas but do not see any photopeak. My energy spectrum plot is attached. I copied the physics lists from $G4INSTALL/examples/extended/electromagnetic/TestEm14/ My macro files are as follows: /gammagun/phys/addPhysics penelope /run/initialize /vis/disable /gammagun/phys/setAllCuts 0.1 mm /gps/particle gamma /gps/pos/type Plane /gps/pos/shape Square /gps/pos/centre 0. 0. 7. mm /gps/pos/halfx 2. mm /gps/pos/halfy 2. mm /gps/ang/type planar /gps/ene/type Mono /gps/ene/mono 511 keV #/run/setCut 0.0000001 mm /gammagun/det/setcovermaterial Vacuum /gammagun/det/setxtalmaterial LYSO /gammagun/det/setxtalxsize 4 mm /gammagun/det/setxtalysize 4 mm /gammagun/det/setxtalzsize 22 mm /gammagun/det/setenergyresolution 0 /gammagun/det/update /random/setSeeds 5767 1602 /run/beamOn 100000 Thanks, Victor [ MIME part of type text/html without a name stripped ] Attachment: http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2013/06/21/14.00-3928-plot0.01.png
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