[Sbs_gems] [EXTERNAL] Re: [New Logentry] SBS GEM Latency Scan Results

[Alexandre Camsonne]

Great news !

On Mon, Oct 17, 2022 at 4:45 PM adr--- via Sbs_gems <sbs_gems at jlab.org>
wrote:

> SBS GEM Latency Scan Results <https://logbooks.jlab.org/entry/4061421>
>
>    - Edit
>    <https://logbooks.jlab.org/entry/4061421/edit?destination=email/send>
>    - Delete
>    <https://logbooks.jlab.org/entry/4061421/delete?destination=email/send>
>
> Lognumber 4061421 <https://logbooks.jlab.org/entry/4061421>. Submitted by
> adr <https://logbooks.jlab.org/user/adr> on Mon, 10/17/2022 - 16:41
> <https://logbooks.jlab.org/entries?start_date=1666035710&end_date=1666042910&book=HALOG&book=SUPERBIGBITE>.
>
> Logbooks: HALOG <https://logbooks.jlab.org/book/halog> SUPERBIGBITE
> <https://logbooks.jlab.org/book/superbigbite>
> Tags: GEM <https://logbooks.jlab.org/tag/gem>
> Entry Makers: adr
> References: 4057468 - BB and SBS GEM, MPD trigger time difference = 240
> ns = 10 latency units <https://logbooks.jlab.org/entry/4057468>
>
> We found that our guess value for global latency of "102" for SBS GEM
> latency is correct/very close.
>
> Look at page 3, 3rd raw, 3rd and 4th plots in the attached files. These
> are max time sample histos for U/X and V/Y strips respectively, for events
> with track cuts.
>
> At 102 latency ->
> https://logbooks.jlab.org/files/2022/10/4061348/summaryPlots_1998_sbs_ge...
> <https://logbooks.jlab.org/files/2022/10/4061348/summaryPlots_1998_sbs_gem.pdf>
> At 108 latency ->
> https://logbooks.jlab.org/files/2022/10/4061354/summaryPlots_1999_sbs_ge...
> <https://logbooks.jlab.org/files/2022/10/4061354/summaryPlots_1999_sbs_gem.pdf>
> At 96 latency ->
> https://logbooks.jlab.org/files/2022/10/4061357/summaryPlots_2000_sbs_ge...
> <https://logbooks.jlab.org/files/2022/10/4061357/summaryPlots_2000_sbs_gem.pdf>
>
> At 102 latency, we see a peak is at 5th time sample. At both 108 and and
> 96, we clearly don't see a distribution and suggests that the latency is
> off.
> We will ideally want to peak at the 4th time sample just like the BB GEMs.
> So we will decrease the latency by 1 unit and see.
> https://logbooks.jlab.org/entry/4061417
> _______________________________________________
> Sbs_gems mailing list
> Sbs_gems at jlab.org
> https://mailman.jlab.org/mailman/listinfo/sbs_gems
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/sbs_gems/attachments/20221017/b583ea59/attachment-0001.html>