KLF beamline meeting - May 29, 2024

Agenda

• Announcements

• Progress of CPS design (Tim, Pavel)

  • CPS Beamline layout

    Tim

   - prototype of absorber - next two months
   - finalization of shielding in terms of installation and deinstallation
   - magnet and absorber design is nearly finalized (99% ready)
   - reduced dose allow to operate with cheap resin

• • CPS Model Update – May 2024, “KLCPS80”

    Pavel

   - updated model of CPS. Main motivation to accommodate technical requirements, like all joints outside shielding
   - new model reduces dose on magnet coils.

• New design, construction, and installation schedule estimates (Tim)

  • KLONG Installation Schedule 2026 with no MRI Magnet

    KLONG Installation Schedule 2025 with MRI Magnet

   - 2025 is feasible, but would require additional manpower to parallelize operations.
   - 2026 is rather relaxed.
   - Budget profile is on the way.
   - Answer to a question from Igor: an early pre-installation of CPS is not possible due to conflict in location with existing equipment.

• Space at the lab (Tim, Eugene)

  • Need 700 sq ft general indoor storage on or off site

    200 sq ft in ESB (KFM detector check out)

    Additional 150 sq ft in lead shed

    Assume MRI magnet comes directly to hall when available

   - Space is requested from the lab, no problem with allocations are expected

• Recommendation #4 from ERR-1 (Moskov)

  Results of the studies

  Statement regarding the studies of KLF compatibility with MOLLER.

  On May 24, Moskov reported that accelerator folks did not have a time to check a situation with Moeller vs KLF in May and will do that in November.

• Recommendation #5 from ERR-1 (Tim)

  Results of the studies

  Statement regarding thermal cycling of the targets receiving >1 KW power.

   - Thermal cycling (Tim):
   - All seems to be good

• Any other business.

  • Mikhail reported a tentative schedule for the KFM parts to be moved from Juelich to JLab.

   - Expected deinstallation - beginning of August.
   - Possible contribution from Juelich for equipment transfer.
   - Possible additional funding for tracker electronics
   - Without a magnet two layers are sufficient -> reduction of channels # by factor of 2 -> 122*4*2~1000 channels.
   - Eugene's comment: TDC from Hall-B might be available and sufficient for this. (will be explored).

• • On the next meeting, Ilya will report the KL rate from Be-target extracted from PRad measurements.

Minutes

Present: Mikhail, Tim, Edy, Pavel, Eugene, Marshall, Hovanes, Eduard, Vitaly, Beni, P.D., Igor

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