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Energyloss in thin silicon detectors [message #15609] Tue, 29 October 2013 15:10 Go to next message
Prometeusz Jasinski is currently offline  Prometeusz Jasinski
Messages: 34
Registered: January 2012
continuous participant
From: *kph.uni-mainz.de
Hi,

my bachelor student is studying the radiation damage on our luminosity detector sensors. When looking on the total energy loss per track and event in the distributions... I simply do not understand them. Other distributions I have seen in this forum do not seem to show those strange peaks. Are we cutting the edge with 50µm thick sensors at Geant4 and high particle energies (MIP) ?

Please have a look to the pages 2-6.

Regards

Promme
Re: Energyloss in thin silicon detectors [message #15610 is a reply to message #15609] Tue, 29 October 2013 15:20 Go to previous messageGo to next message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *to.infn.it
By default, in gconfig/g4Config.C:


   TG4RunConfiguration* runConfiguration = new TG4RunConfiguration("geomRoot", "QGSP_BERT_EMV", "stepLimiter+specialCuts+specialControls");


if you remove "specialCuts"+specialControls" there should be no cuts at all, and the distribution could look better. Could you please try? I have some supects but I am not pretty sure.


Re: Energyloss in thin silicon detectors [message #15709 is a reply to message #15610] Tue, 12 November 2013 10:02 Go to previous messageGo to next message
Prometeusz Jasinski is currently offline  Prometeusz Jasinski
Messages: 34
Registered: January 2012
continuous participant
From: *kph.uni-mainz.de
Hi,

we tried your suggestion. Still we observe structure, specially for proton/anti-proton (see page 4). Simulation takes ages now. The real reason must be another one.
Re: Energyloss in thin silicon detectors [message #15730 is a reply to message #15709] Fri, 15 November 2013 16:31 Go to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant

From: *to.infn.it
Have you seen the pid of the particles producing such structure, to understand which physics is involved? Is it present also in MVD, which should have a similar code and detector type?
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