[Sbs_gems] [New Logentry] Follow-up Re: Question UVA UV GEM

[Andrew Puckett]

I would not recommend changing the HV based on this plot alone without more care analysis. We inevitably see saturation in some small fraction of events. I don’t think it is anything to worry about.

puckett.physics.uconn.edu

On Dec 5, 2021, at 10:55 AM, kagnanvo at jlab.org wrote:


Follow-up Re: Question UVA UV GEM<https://logbooks.jlab.org/entry/3956838>

  *   Edit<https://logbooks.jlab.org/entry/3956838/edit?destination=email/send>
  *   Delete<https://logbooks.jlab.org/entry/3956838/delete?destination=email/send>

Lognumber 3956838<https://logbooks.jlab.org/entry/3956838>. Submitted by kagnanvo<https://logbooks.jlab.org/user/kagnanvo> on Sun, 12/05/2021 - 10:50<https://logbooks.jlab.org/entries?start_date=1638715842&end_date=1638723042&book=BIGBITE&book=HALOG&book=SUPERBIGBITE>.

Logbooks:       BIGBITE<https://logbooks.jlab.org/book/bigbite> HALOG<https://logbooks.jlab.org/book/halog> SUPERBIGBITE<https://logbooks.jlab.org/book/superbigbite>
References:     3956665 - Question UVA UV GEM<https://logbooks.jlab.org/entry/3956665>

It looks like APV25 saturation which might indicate that the gain is a bit too high.
GEM expert on call might want to consider lowering HV a little bit (~25 V). Should be safer and not affect efficiency.

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