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Question Hits definition and Sensitive Detectors 

Keywords: hits, sensitive detector
Forum: Hits, Digitization and Pileup
Date: 27 Jan, 2004
From: Megan lehnherr <>

I'm having a bit of trouble figuring out what's going on with the hit collections. I have a calorimeter, and I wish to count the number of optical photons created in it. I was using a counter in StackingAction to keep track of the number. However, I'm trying to use the Hits to get information about particles.

Currently in my ProcessHits() function, all particles are neutral, which makes me think that somewhere a hit is defined as a neutral particle. Is this the case? And if so, where is a hit defined? Also, if I have different sections that would need different hit definitions, do I need to define a specific sensitive detector for each section?

Another thing that I'm confused about is that fact that currently for one event there are thousands of hits. How do I simply get the number of optical photons (or charged particles in another one of the sections) in a section of my calorimeter?

I hope this is clear enough. I would appreciate some direction. Thanks, Megan Lehnherr

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1 None: Re: Hits definition and Sensitive Detectors   (Makoto Asai - 29 Jan, 2004)
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