Present: Stepan, Maurik, Nathan, Matt, Tim, John, Raffayel, Bryan, Takashi, Norman, Marzio

  • HPS-2019 membership list and shifts (Bryan)

Bryan discussed the collaboration list and shifts for the upcoming run. Note, that shift distribution should be available for collaboration 3-months before the run. After responses from the institutional representatives, we have 64 active members (in 2016 we had 74 members). HPS will run for 9 weeks (378 shifts, worker and expert) plus 54 (9*6 systems) expert shifts. All together will about ~2 shift blocks/member, assuming 1 week of the expert on call = 1 shift block.  Raphael proposed to change that ratio to 2-weeks of the expert on call = 1 shift block, arguing that expert on call will not spend 40 hours a week on the experiment. Tim argued that it may be true for some systems but not for all, e.g. DAQ/trigger. John pointed out that during installation these the same experts will put much more hours than others. No decision was made at this point, further discussions will be needed. Stepan will send an email to collaboration with a request for an expert on-call shifts from each institution.


  • Discussion on run plan, calibration runs and additional targets 

Stepan discussed preparations for the run, and the run plan, in particular preparations for special calibration runs, e.g mounting additional targets for SVT alignment. Several options were discussed/proposed; a new W foil in place of CH2 displaced in z (upstream), additional wire on SVT wire scanner frame, something on the SVT frame upstream of the target. No decision has been made on what to do, more studies are needed, will continue discussions in other meetings.  


  • Simulations with 2019 detector (Maurik)

 Maurik reported that the detector with hodoscope and L0 is ready for simulation. Reconstruction needs some more work. Everybody agreed that we need full simulation and reconstruction running before run starts. 

  • Reconstruction with one cluster-track match (Nathan/Matt)

Matt discussed reconstruction with one cluster-track match. He pointed out that in the past there have been studies done with two tracks without matching to ECal clusters. The main worry is background, but he does not expect that to be a problem. Nevertheless, as he pointed out, we need to do more studies using full simulation to be ready for data analysis. 


  • Status of upgrades (Tim/Rafo)

Both upgrades are on track, with ~1 week delay. Tim reported the one full module has been tested and looks good (after fixing wire bonding issue). More good modules on the way. Rafo reported that strips are ready for assembly, All-B tech started test polish of fibers in PMT adapter, so far everything looks good. Assembly will be finished in about 2 weeks, after which cosmic tests will start

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