[Dsg-rich] [New Logentry] RICH high temperature interlock came off again.
Valery Kubarovsky
vpk at jlab.org
Tue Aug 7 17:36:24 EDT 2018
Amrit,
Thank you for advice. Yes, we have options to overcome this problem.
For a moment we finished our tests and I will keep the detector OFF untill the
conditions will be stable.
Bets regards,
Valery
> From: "Amrit Yegneswaran" <yeg at jlab.org>
> To: "Valery Kubarovsky" <vpk at jlab.org>
> Cc: dsg-rich at jlab.org
> Sent: Tuesday, August 7, 2018 4:56:51 PM
> Subject: Re: [Dsg-rich] [New Logentry] RICH high temperature interlock came off
> again.
> valery,
> as marc's email yesterday suggested, keeping the roll up door open increases the
> temp in the hall.
> tyler looked into the matter today and noticed that the hall temp goes up by 5
> F.
> (tyler will send a detailed report after the dsg meeting tomorrow)
> so for now the options are:
> 1. ask that the roll up door be kept shut, as much as possible .
> 2. increase air flow by about 5%
> 3. increase threshold by another 3 C.
> in reality we have 3C3+3C2+3C1 +3C0 options!
> amrit
> From: vpk at jlab.org
> To: dsg-rich at jlab.org, vpk at jlab.org
> Sent: Tuesday, August 7, 2018 4:00:04 PM
> Subject: [Dsg-rich] [New Logentry] RICH high temperature interlock came off
> again.
> RICH high temperature interlock came off again.
> Lognumber 3584622 . Submitted by vpk on Tue, 08/07/2018 - 15:58. Logbooks: RICH
> Entry Makers: vpk
> We have the same situation today around noon: high temp interlock (N5 and 6)
> switched RICH off lv and hv.
> I increased (+2C) the high limits at these sensors. It is still acceptable for
> the front-end electronics.
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