Moller Polarimeter/NPS

Moller measurement summaries for NPS

This is the "Cliff notes" section on Moller polarimetry runs during NPS Running.

Note on sign of polarization [1]

Note that this is the first experiment to use the new cryogen-free superconducting target magnet.

September 22, 2023

• IHWP IN: P = -80.14 +/- 0.54 %
• IHWP OUT: P = 80.55 +/- 0.58 %

• Tune up at 5 pass.
  • Q1 = 126.86 A
  • Q2/Q3 = -1318.0 A
  • Final collimator settings: https://logbooks.jlab.org/entry/4185462
    • 1/2 = -0.60/-0.60
    • 3/4 = -1.80/-2.40
    • 5=0.0
    • 6/7=-2.90/-2.80

• Summary log entry: https://logbooks.jlab.org/entry/4185474
• Runs on 9/22/2023 (QE=0.3215%)

Run	  Pol (%)   Error (%)	Hwien     Energy(MeV)     Comment
1787      -         -           -48.3     -               First run after gain matching calorimeters