[Clas12_calcom] new timelines for RGB available - ECAL check - feedback needed

silvia at jlab.org silvia at jlab.org
Thu Apr 13 09:41:54 EDT 2023


Dear all,
new timelines for RGB S19 have been produced after the recent changes to
CCDB for ECAL.
They can be found at this link:
https://clas12mon.jlab.org/rgb/pass0/v28.51/tlsummary/

I have made a comparison, restricted to ECAL, with the timelines done with
the February cooking, please find my slides at the link:
https://box.in2p3.fr/index.php/s/ENtSbFexnzxfxS8

There is an overall loss of electrons/trigger or roughly 2%, with the new
reconstruction and CCDB.

I need feedback from Cole and CalCom in order to decide how to proceed.

Should we cook our 6 test runs to verify the performances? Or are further
changes expected to happen to ECAL calibration constants or SF
parametrizations (for both electrons and photons)?

In our RGB meeting of last week various possible tests were mentioned:
- cook the 6 runs with the same CCDB timestamp (the old one or the new
one, or both?) and the two versions of CJ (8.5.0 and 8.7.0)
- cook the 6 runs with the same CJ and different CCDB timestamp.

What should we do?

Thanks a lot for your feedback.
Best regards,
Silvia




More information about the Clas12_calcom mailing list