Monday, February 15, 2021 2pm ET

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Agenda

• Status of envelopes (Chandan)
• Anything else needed from physicists for PDR?
  • tungsten shields for the DS coils to reduce dose
    • What shield thickness and at which locations - it might be best to pot these shields in with the coils so vendors will need to know this.
  • Dipole moment in the bore
• Status of prep for PDR

Minutes

Attendance:

• Status of envelopes (Chandan)
  • Algorithm is working
  • envelopes for what hits detector plane
    • ep done
    • moller soon
  • what gets through the collimators - next couple of days
  • redo "default" to compare to the old method of making envelopes
• Anything else needed from physicists for PDR (March 8, slides done Mar. 1)
  • tungsten shields for the DS coils to reduce dose
    • What shield thickness and at which locations - it might be best to pot these shields in with the coils so vendors will need to know this.
    • Need to know: what is the downstream dose?
    • Don't need side plates in downstream
    • will probably need cylinders
    • allowable dose - 20-30 MGy vs. 30-40 MGy
    • hasn't looked at the effect of dipole from offset coils (coll 6 handles this effect?)
  • Dose on G10 or G11 'filler plates' for the coil windows
    • probably not an issue for the downstream
    • Need the plot of dose in downstream magnet (epoxy)
  • for the specifications, are we going to do the mapping in the bore
    • for the design review of the spectrometer as a whole...
    • dipole moment in the bore
    • doses have to be considered
    • we know >50 G is unacceptable for the whole length
• Status of prep for PDR
  • set of coils pending changes manufacturers need to add
  • pre-production prototype

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