[Sbs_gems] [EXTERNAL] Problems with J0 Mid

[Ezekiel Wertz]

Hi Kondo,

Thanks for the quick feedback. We will have to discuss the path forward,
but it is good to know that the problem is identifiable.

Zeke

On Thu, Dec 2, 2021 at 10:10 PM Gnanvo, Kondo (kg6cq) <kg6cq at virginia.edu>
wrote:

> Hi Zeke,
> This crosses all the boxes of a shorted sector
>
> A gas window collapsed would not change the current.
>
> Best regards
> Kondo
> ------------------------------
> *From:* Sbs_gems <sbs_gems-bounces at jlab.org> on behalf of Ezekiel Wertz <
> ewertz at email.wm.edu>
> *Sent:* Thursday, December 2, 2021 9:52 PM
> *To:* Sbs_gems at jlab.org <sbs_gems at jlab.org>
> *Subject:* [Sbs_gems] [EXTERNAL] Problems with J0 Mid
>
> Hi Folks,
>
> I was alerted by the shift crew to a problem with J0 Middle. At the moment
> we are not entirely sure what has occurred, but the HV demonstrated some
> problems and the efficiency of the module has become greatly reduced. See
> the following log entries.
>
> https://logbooks.jlab.org/entry/3955216
> https://logbooks.jlab.org/entry/3955221
> https://logbooks.jlab.org/entry/3955220
>
> Also see the 50k replay plot for J0 mid on page 24
>
> https://logbooks.jlab.org/files/2021/12/3955238/summaryPlots_12496_bb_gem_for_shiftcrew.pdf
>
> Currently we suspect either a foil collapse or new shorted sectors in this
> module. But we are uncertain of the actual cause which is why I am
> contacting all of you. I have instructed shift crew to turn off J0 middle
> HV until further notice
>
>
> Ezekiel
>
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