[PEPPo] Daily RC Report 5/26

[Joe Grames]

  *Daily RC Report 5/25:*
Making good progress, we've completed quad centering to define 0L02-0L02 
"straight" and 5D00-5D01 "PEPPo" BPM positions and saving recoverable 
baseline correctors & quads for setup to FC2.  Overnight, first pass 
checkout of Compton integration mode performed w/ LV=off/on, varied 
rates and PITA.  Initial results indicate analysis code needs some 
modification and if successful, this checkout will again be performed on 
OWL.  In meantime, on DAY shift cryounit was varied and beam momenta of 
7.85MeV/c (max tested), 7.24MeV/c(max spectrometer will transport) and 
5.56MeV/c mid-range value setup.   So, good progress on learning process 
to set or measure the beam momentum.  SWING shift will focus on setting 
quadrupoles at different momentum setup(s) to set spot size at T1 or 
~T2, and if time permits first checkout of the annihilation detectors.  
Also on DAY shift, three methods to change target polarization while 
measuring pick-up voltages were tested so we may choose/write down a 
procedure.

*Noteworthy items:*
1. Summary of today's RC meeting is here:
https://positron.jlab.org/wiki/index.php/Sat%2C_May_26%2C_2012_%28Grames%29

*Next 24 hours:*

    Saturday, 5/26 SWING (SL=Freyberger)

        * CB10 - process to measure/set quads w/ p=5.56MeV/c for round
          spots at T1 and ~T2
        * CB14 2hr annihilation checkout w/ beam on ITV5D03A w/ ~few
          hundred pA

    Sunday, 5/27 OWL (SL=Suleiman)

        * CD1 - PQB setup required for CD3
        * Repeat CD3 checkout if integrated method <=== PRIORITY GOAL
        * CD2 - Mott, if time permits
        * Originally scheduled but on hold until priority tasks achieved:
              o CD5 - Compton vs. analyzing magnet current
              o CD4 - Compton vs. beam polarization orientation
              o CD6 - Linearity test of integrated method

    Sunday, 5/27 DAY goals (SL= Poelker)

        * Test cryounit at lower beam energy ~3MeV/c
        * CB13 Fiber array checkout

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