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Re: Efficiency reduction of antiprotons above 20 degrees [message #17605 is a reply to message #17603] Tue, 02 December 2014 13:47 Go to previous messageGo to previous message
StefanoSpataro is currently offline  StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino
first-grade participant
From: *to.infn.it
Can you please provide a one-dimensional histogram with theta distribution of your primary particle, overlapping protons with antiprotons? From the 2D histogram is hard to understand what is going wrong and where.

Moreover, can you check that your antiprotons are not annihilated into some material? Maybe this could cause a loss in efficiency, since your antiproton does not exist anymore. I don't know if this can explain a 10% loss.

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