updated Mar 31, 2015
PREX-II To-Do List
Here is a list of things to do to get ready for
a PREX run.
For CREX, see the CREX todo list.
I. Radiation Shielding
-- Responsible: Kent, Bob, Rakitha
-- Water-cooled tungsten plug
-- Need full design of external shielding. status: ~3/4 complete, need review
II. Vacuum / coupling to HRS
-- Kent, Bob, Rakitha
-- Design of vacuum box and sieve
-- Collimator -- Paul wants to revisit the small-theta cut: Bob
-- Will need new coils. Can re-use iron. status: coils purchased
-- Basically the same as PREX-I.
-- Develop tuning procedure. Bob
IV. Compton Polarimeter
-- Laser Polarization: Kent
-- Laser and photon detector basically ready: Dave
-- Manpower revitalized
-- Upgrades of counting DAQ and E-det
-- The upgrades of the counting DAQ and E-det are not needed for PREX.
V. Moller Polarimeter
-- Restore the high-field Moller: Jim Napolitano
-- Electron optics systematics (Geant and data disagree on acceptance): Jim
-- Cryogenics upgrade. status: new magnet and cryo upgrade purchased
-- Custom FADC DAQ needs more work
VI. Parity DAQ
-- Restore the DAQ : Bob
-- Starting to use Qweak ADCs. Two are deployed now.
-- Quartz detectors. Is the existing design ok ?
-- Linearity studies to improve the limits.
-- Do we want GEMs ? Probably not. (check with KK)
-- Redesign : Dustin
-- Bob responsible
-- Order isotopically pure Lead. status: 10 foils procured
-- Order diamond foils status: 30 foils being purchased
-- Explore concept of running two "stovepipe" chambers for simultaneous PREX/CREX deployment.
X. Raster Sync
-- Agilent function generators procured.
-- Commissioning Tests : Bob