[Sbs_daq] GMn timing shift information

[Alexandre Camsonne]

Also one thing one should be careful the logs, only the parameters at end of run make sense, the first values are at recorded at prestart but I think the TI is now initialized at go.



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From: Alexandre Camsonne<mailto:camsonne at jlab.org>
Sent: Friday, December 10, 2021 10:14 AM
To: William Gu<mailto:jgu at jlab.org>; Bryan Moffit<mailto:moffit at jlab.org>
Cc: sbs_daq at jlab.org<mailto:sbs_daq at jlab.org>
Subject: RE: [Sbs_daq] GMn timing shift information

I think it was started as usual, but there is another problem we see happen, is ROC16 and 17 gets shifted with respect to the other.
This seems to happened when starting another run.
Empirically it seems to happen less often is we do reset and download.

So I should monitor this parameter too.

Alexandre

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From: William Gu<mailto:jgu at jlab.org>
Sent: Friday, December 10, 2021 10:09 AM
To: Bryan Moffit<mailto:moffit at jlab.org>
Cc: Alexandre Camsonne<mailto:camsonne at jlab.org>; sbs_daq at jlab.org<mailto:sbs_daq at jlab.org>
Subject: Re: [Sbs_daq] GMn timing shift information

Bryan,

I do not think that this run is related to the 75ns time shift.  I think that it is an operator error in starting THIS run.

Thanks.

William

> On Dec 10, 2021, at 10:03 AM, Bryan Moffit <moffit at jlab.org> wrote:
>
> Lets meet after the SBS DAQ meeting, and discuss the possible differences between the SBS run start procedure and the one you had in mind.
>
> On 10-Dec-21 10:01:19 AM, William Gu wrote:
>> Alexandre,
>> There were 'serious' setup problem with run#12536.  The Sync_delays were set properly, but the Trigger_alignment (TI register 0xB8) were not set (properly).  This was caused (most likely) by the run start procedure (human error?).
>> Thanks.
>> William
>> ------------------------------------------------------------------------
>> *From:* Sbs_daq <sbs_daq-bounces at jlab.org> on behalf of Alexandre Camsonne <camsonne at jlab.org>
>> *Sent:* Friday, December 10, 2021 7:45 AM
>> *To:* sbs_daq at jlab.org <sbs_daq at jlab.org>
>> *Subject:* [Sbs_daq] GMn timing shift information
>> Hello,
>> Could you help gathering all the halog and informations about the timing shifts ?
>> https://hallaweb.jlab.org/wiki/index.php/Timing_shift_GMn <https://hallaweb.jlab.org/wiki/index.php/Timing_shift_GMn>
>> Thank you,
>> Alexandre
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows
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