General Meeting Summary 1/8/15

IDAHO TEST PLAN

Main goals: irradiation studies of PWO at higher dose rates than available at JLab

Discussion about irradiation procedures, transmittance measurement, and shipping the crystals after irradiation

PbF2 was irradiated from one end and if got poor performance flipped the crystal - requires clear labeling of the crystals
PbF2 runplan included irradiation, transmittance measurements with device from OU, and blue light curing sessions
Action item for PWO irradiation studies: get OU device to JLab and calibrate against the setup there - Hamlet will get in touch with Julie
PbF2 was transported in little boxes by FedEx. Crystals may have stayed in Idaho for a few weeks after irradiation tests complete
Action items for PWO transportation:

locate boxes for transportation
locate/procure a box that can keep the crystals cold (to reduce recovery - quality of data will depend on this annealing)
temperature tracking?
determine pricing for shipping crystals to/from Idaho, e.g., FedEx or other freight companies (CUA used Radiant Logistics for other shipments)

So far transmittance measurements planned for full wavelength spectrum. If one only measured a few representative wavelengths perhaps one could use lasers? Challenge with such a setup may be alignment/stability of laser

SWEEPING MAGNET (SLIDES FROM BOGDAN, CHARLES, PAUL)

Based on kinematics table, the smallest angle requirement driven by DVCS. WACS angles larger, but field integral more demanding

assumes distance 157 cm from center of magnet to pivot
concept gives acceptance consistent with kinematic table
fringe fields compensated with field clamp and "mini magnet"
for DVCS where one needs the small angles of HMS would have to remove part of the iron
works with existing power supplies at JLab

ITEMS FOR NEXT MEETING:

NEXT MEETING: THUR., 29 JANUARY 9:00 AM (EST)

Navigation menu