[Clas12_calcom] timelines for RGB Spring19 available to be checked

[Florian Hauenstein]

Dear Silvia,

The DC timelines are fine and I can sign off with the new timeline.
The difference to the previous timelines in the means are due to the timeline code update in February. The current timeline is still in spec with the usual outliers in Sec 2 SL1/2. Sigmas are also good

Note: It is interesting that the jump in the means is also at run 6546 when the ECAL SF changes. Not sure if this is just a coincidence or has some deeper meaning but it is an interesting observation.

Best,
Florian


________________________________
Von: Clas12_calcom <clas12_calcom-bounces at jlab.org> im Auftrag von silvia--- via Clas12_calcom <clas12_calcom at jlab.org>
Gesendet: Mittwoch, 5. April 2023 05:39
An: clas12_calcom at jlab.org <clas12_calcom at jlab.org>
Betreff: [Clas12_calcom] timelines for RGB Spring19 available to be checked

Dear detector experts,
new timelines were made for RGB Spring19 (data cooked with 8.7.0), and can
be found at this link:
https://clas12mon.jlab.org/rgb/pass0/v28.50/tlsummary/
Please check them and let me know if you see any problems.
I gave a quick look and compared to timeline v28.44 (February 6th, CJ
8.5.0), and I show comparisons in the slides you can find here:
https://box.in2p3.fr/index.php/s/MT3acjKRMgp2PN4
In summary:
- I notice a ~2% reduction in electrons/trigger yield;
- ECAL: there is a jump in the SF at run 6546 (gains changed in CCDB on
March 4th for 6546 - 7000); pi0 mass is out of specs for runs 6437 - 6545;
pi+time - starttime is out of specs/at the edge of specs for most of the
run range;
- slight worsening in DC residuals
- FTCal: less outliers in pi0 mass, although a few just remain. It may be
just a statistical effect, though.
- FTOF p1b pathlength-corrected edep has changed (this was expected) and
specs have changed as well.
For the rest, all seemed stable to me.
Please give me your feedback.
Cole, if you need the pass0 data to complete ECAL calibration, you'll find
them at: /volatile/clas12/rg-b/production/recon/pass0/v28.50/mon/recon/
Thanks a lot and best regards,
Silvia


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