[Clas12_calcom] analysis of RGB timelines before pass-2 calibrations

[silvia at jlab.org]

Dear detector contacts,
I gave a look to the timelines that Zhiwen produced for RGB spring19. Here
are my observations/comments, to be added to those I already received from
Daniel on FTOF and CTOF. I am not commenting on DC as Florian said he's
looking into it.
Here are my observations, I noted the runs for which things change
compared to the overall trend, just to give an idea of the status of the
data - and of course this will need to be reviewed after the first step of
calibrations (beam offset and then FTOF):

RF: 3 runs with timing off: 6226 6227 (low lumi runs) 6350 (empty target run)

HTCC nphe: 6263 (empty target); 6285 sector 6 seems off (should be junked)
HTCC time: 6156, 6157, 6226, 6227; runs from 6599 onwards; some individual
rings here and there slightly off time

FTC pi0 mass: 6350, 6389, 6599, 6601, 6603 (all empty-target runs)
FTC time ch mean: 6156, 6226, 6227, 6350, 6599, 6601, 6603
FHT MIPS energy & time mean: 6156, and minor shifts for the ET runs

EC sampling: 6285 S6; runs 6437-6445: S2 is lower; overall progressive
drifting
EC pi0 mass: drifting progressively, by about 4 MeV over the whole period

Forward electron vz: 6263 (ET), 6285 sector 6, 6350 (ET), 6389 (ET), 6599,
6601, 6603; for all other runs, the average vz is about -2.5 cm

central vz: 6156 (covering 6156 and 6157), 6164 (covering until 6225),
6227 (covering 6226-6227, low-lumi),
6233 (6233-6298 aside from holes in between), 6250 (6249-6251), 6263
(6263, ET run),
6302 (covering 6299-6598, except for holes), 6323 (covering 6323, low-lumi
run),
6350 (covering 6350, ET run), 6371 (6371, low-lumi), 6389 (covering 6389,
ET run),
6396 (covering 6396, run without MVT1), 6447 (covering 6447-6448, low lumi
runs),
6598 (covering 6598, prod), 6599 (covering 6599-6601, ET runs)

Best regards,
Silvia