He3-ABS: Bi-monthly Meeting

America/New_York
https://mit.zoom.us/j/92275675151 (Zoom)

https://mit.zoom.us/j/92275675151

Zoom

Prajwal Mohan Murthy (MIT LNS)
Description

Bi-monthly meeting of MIT-BNL He3-ABS Collaboration

Mail-list
  • We decided to setup a wiki page: Vera to initiate a branch for He3 polarimetry on BNL wiki.
  • Prajwal reported that the fiscal matters were setup on MIT reg. accounts for manpower and fabrication.
  • Updates to the storage cell:
    • Larger magnetic field to cover the entire storage cell's length along the beam.
    • To enlarge the windows to cover the large portion of the storage cell.
    • The storage cell will need to be housed in a vacuum vessel. A existing vacuum vessel at BNL could be used. Prajwal will evaluate this by Sep.
  • Wakefield issues:
    • There is a possibility that at EIC, the storage cell cannot be made with aluminum, because the Wakefield effect is large
    • Frank was going to initiate a Wakefield calculation with Medani to check if we need to use (i) ceramics, and (ii) if we need Wakefield suppressors.
    • Medani will present some preliminary calculations on 6/5.
  • Measurement of beam temperature:
    • We currently plan to measure the beam temperature by pulsing the ABS beam using the VAT valve
    • Frank suggested using a chopper.
    • A chopper may not be incorporated in the current measurement plan at Bates, but we can consider a spinning circular chopper for a general application to all the ABSs. If this chopper could work for H-Jet, it is likely possible to be also applied to He3-ABS.
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