General Meeting Summary 10/28/21

From Cuawiki
Jump to: navigation, search

PARTICIPANTS: Aaron, Arshak, Charles, Brad, Hamlet, Paulo, Petr, Steven, Tanja, Vardan, Vladimir, Carlos, Fernando, Rolf, Bogdan, Julie

GROUNDING OF NPS (Fernando)

  • Detector chassis isolated from any detector structure
  • Chassis connected to electronics ground and thick cable that connects to clean ground in hall
  • CAD drawing in progress


HV DIVIDER (Fernando)

  • Optimized design PCB nearly complete
  • Testing the full dynamic range of optimized divider design suggests that need to increase gain
  • also requires higher bandwidth - may need to change chip
  • Communication with Orsay team on grounding connectors
  • CAD drawing with connector position provided - can be considered final
  • Recall two options presented by Orsay team:
  • fixed wire
  • connector

LOW VOLTAGE (Carlos)

  • PCB designed and quotes
  • expect end of year/early January
  • low voltage cables - can be purchased with connector from samtek or flat cable + modify and add connector
  • Action: request quote (Fernando) - Orsay needs to provide cable lengths
  • Timelines:
  • Low voltage cables should be done by beginning January
  • Expect HV Dividers to be in hand end of the year to beginning January


DSG UPDATES (Aaron)

  • Thermal simulations
  • Ambient air temperature determines crystal temperature
  • expected load is 0.5W
  • very stable at lower heat loads - for 0.5W per crystal
  • keeping at 18degC seems a good choice
  • Ambient experimental hall temperature typically 20-21 degC
  • plan to investigate adding cooling flow and also add wrapping material and investigate additional ambient temperatures
  • NPS will have air flow to prevent condensation, but this will be dry air,
  • Reflector shaping - made 110 so far, 16% done
  • ODU has 500 foils - expects to deliver the first 100 pre-shaped foils in first week of November


MECHANICAL (Paulo)

  • much progress with design and procurement of components
  • cabling strategy for roof block finalized - present design focus is on sections near beamline, which will determine remaining cabling strategy


ASSEMBLY PREPARATION DISCUSSION

  • Need dates when people on site
  • first thoughts - end of January/beginning February sounds possible
  • vaccination mandatory to travel to US from November 8th - negative Covid test also still needed
  • Electronics - good progress with electronics components
  • LV PS received and stored
  • Expectation: installation NPS in spring/summer 2023, first NPS run in fall 2023
  • Start thinking about next collaboration meeting


NEXT MEETING: THURSDAY 2 DECEMBER 2021 AT 9AM ET