[Primexd] [Revised Logentry] Suspicious channel in the inner FCAL ring
Justin Stevens
jrsteven at jlab.org
Sun Mar 3 12:46:00 EST 2019
FYI, we’ll have an access starting at 8:30 Monday morning, if there is work to be done for this channel or otherwise.
-Justin
> On Mar 3, 2019, at 11:12 AM, Colin Gleason <gleasonc at jlab.org> wrote:
>
> This looks channel looks ok now. I'm guessing it had dropped HV for a small amount of time then recovered. I will keep an eye on this channels stability and remove it if it keeps dropping HV.
>
> On Sat, Mar 2, 2019 at 9:50 PM <somov at jlab.org <mailto:somov at jlab.org>> wrote:
> Suspicious channel in the inner FCAL ring <https://logbooks.jlab.org/entry/3662239>
> Edit <https://logbooks.jlab.org/entry/3662239/edit?destination=email/send>
> Delete <https://logbooks.jlab.org/entry/3662239/delete?destination=email/send>
> Lognumber 3662239 <https://logbooks.jlab.org/entry/3662239>. Submitted by somov <https://logbooks.jlab.org/user/somov> on Sat, 03/02/2019 - 21:46 <https://logbooks.jlab.org/entries?start_date=1551577607&end_date=1551584807&book=HDCCAL&book=HDLOG&book=HDTRIGGER>.
>
> Last updated on Sat, 03/02/2019 - 21:50
>
> Logbooks: HDCCAL <https://logbooks.jlab.org/book/hdccal> HDLOG <https://logbooks.jlab.org/book/hdlog> HDTRIGGER <https://logbooks.jlab.org/book/hdtrigger>
> Entry Makers: somov
> There is one suspicious (dead) channel in the inner FCAL ring. This channel has rather large current (about 4 mA).
> I noticed the problem starting from run 61357 (may be it happened earlier). Colin, please check this channel on Monday,
> likely we'll need to replace the base.
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> --
> Colin Gleason
> Postdoctoral Fellow
> Indiana University
> Department of Physics
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