[Clas12_calcom] RG-E reference run calibrations

[Valerio Mascagna]

Hi Dan,
short version: for LTCC is done.

Details:
I would keep the initial calibration done with run 20015 (see May-16 
logbook entry here <https://logbooks.jlab.org/entry/4305858> and 
corresponding ccdb table here 
<https://clasweb.jlab.org/cgi-bin/ccdb/show_request?request=/calibration/ltcc/spe:20000:default:2024-05-16_06-59-57>) 
as valid for the whole run range. One reason is the usual one, LTCC spe 
calibration is done with the raw data, therefore recooking does not 
affect it. The second reason is that I verified that the ADC spectra of 
all channels were the very same if comparing run 20015 and 20339. I 
though it was worth to do such a check since ~ 50 days passed from 20015 
to 20339 and this could be a convenient way to spot any problem that 
could have arisen from the beginning of the run period to the end of it. 
You can find in the attached pdf file a channel-by-channel comparison of 
all the ADC spectra, differences are negligible. That's why I would not 
change ltcc/spe constants in the ccdb.

Valerio


On 5/21/24 17:46, Daniel Carman via Clas12_calcom wrote:
> Folks,
>
> Please let me know the status of your calibrations for the 6 RG-E 
> online reference runs:
> 20015, 20046, 20133, 20184, 20339, 20400
>
> Your calibrations of the first 4 of these runs should have been 
> completed a few weeks ago.
> The output for the last two runs (after FTOF calibrations) are now on 
> disk at:
> /volatile/clas12/rg-e/production/calib/v7/
>
> When the calibration work is done, RG-E will want to launch a pass-0 
> to get a full set of timelines
> to prepare for their upcoming Ready for Calibration review at CALCOM.
>
> Assignments:
> 1) BAND - Florian
> 2) CND - Silvia
> 3) CTOF/FTOF - Daniel
> 4) DC - Florian
> 5) ECAL - Cole
> 6) HTCC - Susan
> 7) LTCC - Valerio
>
> Please let me know before the Friday CALCOM meeting the status of your 
> work.
>
> Regards,
> Daniel
>
> *****************************************************************************
> *
> * Dr. Daniel Carman              e-mail: carman at jlab.org
> * Staff Scientist office: (757)-269-5586
> * Jefferson Laboratory       web: https://userweb.jlab.org/~carman
> *
> *****************************************************************************
>
>
>
>
>
>
>
>
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