[Rgc] Next meeting of RG C

[kuhn]

Our next regular meeting is scheduled for this Thursday, November 1, at 9:30 a.m. East Coast daylight savings time (note that we have NOT yet changed to regular = winter time, while most European countries have!)

The agenda can be found, as usual, at
https://clasweb.jlab.org/wiki/index.php/Run_Group_C_Group_Meetings
Please add your items.

I’d like to remind everyone that we are still looking for people who can contribute to the following urgent items:

> 1) The Experiment Readiness Review (ERR) for our run group is scheduled for the last week in March, 2019 - that’s only 5 months from now. Much of the preparation for the ERR will involve the polarized target, but we also need to define the running conditions, run plan, proposed experiments, analysis plans etc. At this point, we hope to use the long shutdown over the summer of 2020 to install the polarized target and run for at least several months in the Fall/Winter 2020-21. So it is not too early to begin in earnest with realistic GEMC simulations of your favorite physics channels. In particular, if you plan to use the FT, you will have to demonstrate that even with rastering the beam the backgrounds (in all detectors, including the FT) won’t be too high to prevent a reliable analysis (tracking efficiency). Plus ideally we need a strong physics case what is lost without the FT (if there is no strong reason to use it, we will be MUCH better off without it).
> We have implemented a semi-realistic version of the polarized target in GEMC - please look at the RGC wiki or ask for pointers.
> 
> 2) Hall B has set aside some money for beam line elements needed for RG C. This pertains in particular to a possible new Moller shield, if that appears to be required. Again, simulations over the next 2-3 months are absolutely crucial to make this decision, as well as other potential modifications to the beam line.
> Also, we URGENTLY need a volunteer to look into all aspects of the raster system:
> -> driver, power supplies (are the existing ones strong enough), magnets (strength, cooling, positioning), raster size, raster pattern (pitch vs. beam size) etc. 
> This could be a nice job for somebody new joining in. 
> 
> Finally, if you know anyone interested in polarized physics who hasn’t signed up yet, please encourage them to join the RGC list.