Prioritized list of instrumentation for remainder of FY15 and FY16 for parity development in Hall A

All items on this list assume that the Hall A parity DAQ has been re-instated.  Contact people for this are Bob Michaels and Ciprian Gal.

For FY2015 (ie. to complete during the summer/fall 2015 down)

1. Reinstatement of Hall A beam modulation system
* Contact people: Yves Roblin and Kent Paschke
* Analyzing data from system: Kent Paschke and students
* Details: This involves re-installing the Hall A beam modulation system (air-core coils and associated control/drive electronics) 
that was used in PREX-I.   All of the hardware exists. Having this in place and fully recommissioned is a must for PREX-II and CREX.

2. Qualification of BCM (beam charge monitoring) to standards needed for PREX-II and CREX
* Hardware needed: Two "new-style" Musson digital receivers = $10000
* Contact people: Roger Carlini, Mark Pitt, Kent Paschke
* Analyzing data from system: Mark Pitt and students, Kent Paschke and students
* Details: Given that the old 1 MHz analog system is failing, reliable charge monitoring to parity specifications needs to be established 
with the newly available digital receivers.  This can be done during the upcoming running period by using the BCMs that are currently 
unused in the XYQ microwave cavity assemblies near the Hall A target.  These can be instrumented with the new Musson receivers and read 
out and analyzed with the parity DAQ, without any interference with the running experiment.  Having reliable beam charge monitoring with 
charge resolutions at least as good as obtained for Qweak is a must for PREX-II and CREX.

3. Installation of third cavity monitor "coffin" assembly on the Hall A beamline
* Contact people: Roger Carlini and Mark Pitt
* Analyzing data from system: Mark Pitt and students, Kent Paschke and students
* Details: This request continues the process of installing the cavity monitor "coffin" that was obtained from the old G0/Qweak girder.  
It currently is on the Hall A floor and Ed Folts has a space allocated for it on the Hall A beamline.  If cabling can be provided with 
FY2015 funds, then this can be tested during the next run with occasional use of one of the digital receivers requested above.
* Hardware needed:
** Solid State Relay and temperature control = $1000
** Cable run from beamline to Hall A counting house (three signal cables and one control cable): $5000

4. Qweak halo monitor
* Contact people: Roger Carlini, Yves Roblin, and Mark Pitt
* Analyzing data from system: Mark Pitt and students
* Details: This would involve moving the Qweak halo target chamber to the Hall A beamline in a spot Yves Roblin found ~ 2 meters upstream of 
the Hall A target.  It would be instrumented with existing Qweak halo monitor PMTs.  A new target would have to be made, but that is a simple 
piece of aluminum with holes.  The goal is to provide a reliable quantitative measurement of the amount of halo on the high energy beam.
It is important to note that this assembly was farther from the target during Qweak.  With the presently proposed location, halo measurements 
could probably only be done with the Hall A target out.  But this would be a good starting point, and it could be relocated later.
* Hardware costs:
** There would be some cost associated with the cabling, but we have not estimated it yet.

For FY2016 (for installation during the next down after this one)

1. Complete installation and or purchase of any items from the above list

2. Equip the newly installed coffin on the beamline with three beam charge monitors.  This will allow definitive charge resolution studies 
(with no concerns about interfering apertures) which is important for both PREX/CREX and MOLLER.  Having a three BCM cavity coffin (QQQ) was 
very useful for Qweak.
The installation and costs are:
** Remove (and save) the two cavity position monitors from the existing XYQ cavity.  The coffin would need to temporarily be moved to John Musson's 
lab where he could install two new BCM cavities.
** Cost estimate from conversation with John Musson on 6/4/2015:
*** Two new BCM cavities: $10,500 x 2 = $21,000
(Note: it is assumed here that at least one new Musson digital receiver ($5000), the Solid State Relay and Temperature Control ($1000), and the 
cable run from the beamline to Hall A counting house ($5000) were already complete when requested earlier in the list).