[Clas12_calcom] [EXTERNAL] RGA Sp19 pass-2 release timelines available

[L Smith]

Hi Timothy,

The trigger mask timeline affects the pizero yield and calibration, cutting the yield by 2/3 and shifting the mean several MeV closer to the physical mass. Since e- are not required for pizero reconstruction in clas12-timeline this is not unexpected, since other non-electron triggers may be dominated by inclusive pizero production, where in addition there is sub-optimal or no vertex reconstruction, which is needed for the most precise 2-gamma opening angle measurement.  

The electron SF timeline is unchanged.  

Cole

> On May 8, 2023, at 2:55 PM, Hayward, Timothy via Clas12_calcom <clas12_calcom at jlab.org> wrote:
> 
> Hi all,
> 
> The coatjava 9.0.0 RGA Sp19 timelines are now available, https://clas12mon.jlab.org/timelines/?rg=rga4 (sp19_v0.21_qa). By my eye everything looks basically identical to the 8.7.0 timeline (sp19_v0.20_qa), which is expected and desired, but I would appreciate it you could also double check your system for approval. 
> 
> The only obvious difference is in the HTCC, which was seen in RGB as well, and I understand is expected by Izzy because of a software change to the timelines (could you explain to me further?). I think it would be good to get these qa lines updated before the review. 
> 
> There is an additional timeline (sp19_v0.21_trigger_qa), with the trigger mask 0x400001 (e- in FD or pi0 in FT) available as well if that is of interest to your subsystem.
> 
> Thank you everyone for your efforts; I hope we’re finally there,
> Timothy
> 
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