Technical Board Meeting July 30, 2024

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Technical Board Meeting June 11, 2024 << >> Technical Board Meeting September 4, 2024

Online: see email

Agenda

  • Quartz and PMT purchases for ancillary detectors (Mark Pitt) slides
  • Concrete shielding of Upstream Torus region (Ciprian Gal) 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.
    • CG: those present unanimously agreed to proceed with the procurement
  • 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: 24h were allowed for people to bring up concerns. None were registered, and the all the attendees at the meeting agreed that this change makes sense.

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)
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