GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » NUSTAR » NUSTAR PRESPEC » prespec data analysis package
Re: prespec data analysis package [message #17019 is a reply to message #16977] Tue, 15 July 2014 13:37 Go to previous messageGo to previous message
miree is currently offline  miree
Messages: 71
Registered: June 2014
continuous participant
From: *gsi.de
I believe that this is the correct combination of crystal-id and TDC channel. But it doesn't look right yet. However, it doesn't look completely wrong. I have marked in red the uncorrelated events and in green the ones that seem to look OK. You have somehow good and bad events in the histogram.
index.php?t=getfile&id=7953&private=0

All of the relevant timing measurements in this part of the experiment are done with CAENv1290 multihit TDCs. "multihit" means, that every channel can contain multiple time measurements. You have to select (by putting an appropriate gate) the right hits from each channel.

This is done by setting a gate for each multihit-tdc channel. For example you have to set the gate of the processor "Agata/Sc41Time" to cover the peak that you see in the spectrum:
index.php?t=getfile&id=7954&private=0

The same has to be done with all the gates in the processor "Agata/ParticleGammaTime".

If you adjusted all the gates, you should see in one of the psa-time vs multihit-time a clear correlation (that is similar to the green part in the first picture, if you zoom in)
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Disagreement between the LISE++ calculations and the experiment
Next Topic: Logbooks and runsheets scan
Goto Forum:
  


Current Time: Fri May 24 08:35:20 CEST 2024

Total time taken to generate the page: 0.01018 seconds