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Question Resetting the Global Time 

Forum: Event and Track Management
Date: 15 Sep, 2014
From: Chelsea Bartram <Chelsea Bartram>

Hello,

I am doing a simulation of Na-22 decay and need to read out some hit times. The main issue I am having is the times are too big (1E17 nanoseconds) due to the radioactive decay half-life of sodium-22. I need to have finer resolution with the time if I am to do any sort of analysis. I see this issue has been addressed before in the following two threads:

http://hypernews.slac.stanford.edu/HyperNews/geant4/get/eventtrackmanage/1033/1.html

http://hypernews.slac.stanford.edu/HyperNews/geant4/get/eventtrackmanage/989.html

I have tried both of these tactics, and still do not see the expected results. Admittedly, I was a bit confused about the first thread, though I did attempt what was instructed. I did try resetting the global time using the PreUserTrackingAction as in the second thread though and still read off extremely large times. The only other solution I can think of is to somehow add together the relevant local times. I am using Geant version 4.9.6. I have a sodium iodide array which is registered as a sensitive detector and I read out the hit times. I have also tried printing out the times in the stepping action. Either way, the times are still very large (on the order of years). Is there a reason why this may not work? Can anyone offer any suggestions? This is my first time posting, so if any other information would be helpful, please let me know. Thank you.

-Chelsea Bartram

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1 Ok: Re: Resetting the Global Time   (Chelsea Bartram - 26 Sep, 2014)
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