View source for Technical Board Meeting July 30, 2024

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[[Technical_Board_Meeting_Jun_11,_2024 | Technical Board Meeting June 11, 2024 ]] <<   >> TBD

Online:  see email

=Agenda=
* Quartz and PMT purchases for ancillary detectors (Mark Pitt) [https://moller-docdb.physics.sunysb.edu/DocDB/0012/001293/001/Pitt_TBmeeting_jul_30_2024.pdf slides]
* Concrete shielding of Upstream Torus region (Ciprian Gal) [https://moller-docdb.physics.sunysb.edu/cgi-bin/DocDBTest/private/ShowDocument?docid=1292 docDB1292]

=Minutes=
* Quartz and PMT purchases for aux sets:
** MP: request is approval for a large purchase for the auxiliary detectors
** MP: most of the components have been bought for other detectors in the experiment. 
** MP: the SAMs will have different tubes; that have worked fine before in similar experimental settings
** CG: we will have spares for the PMTs?
*** MP: counts already have spares in them
** CG: DBM quartz position? Should it not be inside the segment?
*** MP: the quartz is radially in. It is detecting low flux things but it gets to the phototubes but shielded by the segment Pb lip
*** MP: the diffuse background can be picked up the DBM but would be swamped by signal in the quartz of the MD.
** CG: SAM PE yield comparable to what we had in PREX-2/CREX?
*** MP: we are seeing a little larger PE yield (7 in PREX-2/CREX), but the light guide is shorter. 
** DMeekins: Is there a way to disable the HV on the tubes on a fault?
*** CG: we can investigate the inclusion of an interlock for the HV mainframe and will get back to DM with the options available.

* Concrete shielding change:
** CG: request is made to simplify the procurement process. HD concrete purchasing is proving to be quite difficult and expensive
** RW: were the side holes included in the US torus wall?
*** CG: Zuhal included them in the simulation and the radiation field outside of the wall is not changed significantly so we are good to go with that change as well.
** CG: will allow for 24h of dissent but otherwise this change is approved

Next step:

=Attendance=
Present:
* Mark Pitt (Deputy Spokesperson, MOLLER-NSF Project Coordinator)
* Ciprian Gal  (L2 CAM: Infrastructure)
* Klaus Dehmelt (Deputy DOE Project Manager)
* David Armstrong (Elected Executive Board Member)
* Mark Jones  (Hall A Leader)
* Ruben Fair (DOE Project Manager)
* Carl Zorn  (L2 CAM: Detectors)
* Paul King  (Working Group Convener: DAQ) 
* Dustin McNulty  (Working Group Convener: Integrating Detectors)
* Dave Meekins  (L2 CAM: Target)
* Robin Wines (Project Engineer)
* Paul A Souder (Elected Executive Board Member)
* Nilanga Liyanage  (Working Group Convener: Tracking Detectors)


Technical board membership: 

* Kent Paschke, Chair (MOLLER Scientific Coordinator)
* Krishna Kumar (MOLLER Spokesperson)
* Michael Gericke (MOLLER-CFI Project Coordinator)
* Juliette Mammei  (Executive Board International Representative)
* Mike Dion (L2 CAM: Spectrometer)
* Robert Michaels  (L2 CAM: DAQ)
* Vladimir Berdnikov  (L2 CAM: Installation)
* Silviu Covrig (Working Group Convener: Target)
* Caryn Palatchi  (Working Group Convener: Polarized Beam)
* Jim Napolitano (Working Group Convener: Polarimetry)
* Rakitha Beminiwattha (Working Group Convener: Simulations)
* Yury Kolomensky (Working Group Convener: Physics Extraction)