Moeller Polarimeter Raw Results Archives 2016

Results 2016

NEW HIGH FIELD (Temple University) Moller Target

E12-06-114 DVCS: Measurements of the Electron-helicity Dependent Cross sections of the DVCS with CEBAF at 12 GeV

E12-07-108 GMp: Precision Measurement of the Proton Elastic Cross Section at High Q2

  • 17 February, 2016. 10:30 - 19.30: O.Glamazdin, R.Pomatsalyuk

    The beam energy is 4477MeV(accel), 1090.0MeV(linac), 123.MeV(injector), 2 passes.
    Injector angle is +36.6o (0o, 0o flipper).
    IHWP wave plate was OUT. IHWP2 was IN. Rotating HWP was IN . Raster was ON (2x2mm).
    Beam was straight.
    Q1=-48.83A, Q2=85.10A, Q3=21.38A, Q4=71.67A, Dipole=249A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 15919-15925 - Detector HV tune.
    Runs 15926-15932 - Target #3, 3T.
    Runs 15933-15934 - Target #3, 3T, bleed-through test. Hall A laser OFF, Hall D laser ON.
    Runs 15935-15940 - Target #3, 3.5T.
    Runs 15941-15946 - Target #3, 4T.
    Runs 15947-15952 - Target #3, 3.2T.
    Runs 15953-15958 - Target #3, 3T.
    Runs 15959-15964 - Target #3, 3T, dead time measurement.
    19:30 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The theta acceptance is about +/-8.9o and the mean analyzing power is 0.7506
    Levchuk-effect=+1.6%, dead time=0.34%.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    15926-15932 3 0.6 1.250/4.588 3.0T 87.56+/-0.22 0.2 86.47
    15933-15934 3 0.0 1.250/4.588 3.0T 0.0 - - bleed-through test
    15935-15940 3 0.6 1.250/4.588 3.5T 88.05+/-0.21 0.8 86.96
    15941-15946 3 0.55 1.250/4.588 4.0T 87.89+/-0.23 0.5 86.77
    15947-15952 3 0.6 1.250/4.588 3.2T 87.61+/-0.23 0.2 86.52
    15953-15958 3 0.6 1.250/4.588 3.0T 87.78+/-0.20 0.2 86.69
    15926-15958 3 0.6 1.250/4.588 - 87.78+/-0.1 1.0 86.68 Average
    15959 3 0.6 1.250/4.588 3.0T - - - dt=0.34
    15960 3 0.45 1.250/4.588 3.0T - - - dt=0.24
    15962 3 0.8 1.250/4.588 3.0T - - - dt=0.47
    15963 3 1.2 1.250/4.588 3.0T - - - dt=0.67
    15964 3 1.6 1.250/4.588 3.0T - - - dt=0.86

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here and here .
    Plots with beam position and beam energy instability are: Energy and BPM .
    Plot with saturation curve is: Saturation .
    For additional information see halog entry 3380755 .
    Mott measurement result: 3383209 .
    The final results:
    Pz=(86.68 +/- 0.1(stat) +/-1.0(syst)) %

  • 19 February, 2016. 10:45 - 12.00: O.Glamazdin, R.Pomatsalyuk

    The beam energy is 4477MeV(accel), 1090.0MeV(linac), 123.MeV(injector), 2 passes.
    Injector angle is +36.6o (0o, 0o flipper).
    IHWP wave plate was OUT. IHWP2 was IN. Rotating HWP was IN . Raster was ON (2x2mm).
    Beam charge asymmetry test was done. The Moller Log Book scan is given here .
    The table with detailed information is given here and here.

  • February 29 - March 01, 2016. 12:30 - 04.00: O.Glamazdin, R.Pomatsalyuk

    The beam energy is 8824MeV(HALLA:p)/8837MEV(Doug), 1090.0MeV(linac), 123.MeV(injector), 4 passes.
    Injector angle is -54.0o (0o, 0o flipper).
    IHWP wave plate was OUT. IHWP2 was IN. Rotating HWP was IN . Raster was ON(2x3mm).
    Beam was straight.
    Q1=-217.4A, Q2=-196.0A, Q3=136.6A, Q4=251.9A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 15978-15982 - Detector tune. Target #3, 3T.
    Runs 15983-15989 - Wien=-54.0o.
    Runs 15990-15996 - Wien=-90.0o.
    Runs 15997-16000 - dead time meas.
    Runs 16001-16005 - Wien=+25.0o.
    Runs 16006-16009 - Wien=-88.0o.
    04:00 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The theta acceptance is about +/-5.4o and the mean analyzing power is 0.76734
    Levchuk-effect=+1.12%, dead time=0.26%.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    15983-15989 3 0.7 1.250/117.48 3.0T -68.28+/-0.22 1.2 -67.70 Wien=-54.0o
    15990-15996 3 0.7 1.250/117.48 3.0T -87.14+/-0.19 1.8 -86.40 Wien=-90.0o
    15996-16000 3 0.7 1.250/117.48 3.0T - - - dt=0.26%
    16001-16005 3 0.7 1.250/117.48 3.0T +38.89+/-0.22 1.6 38.49 Wien=+25.0o
    16006-16009 3 0.8 1.250/117.48 3.0T -87.66+/-0.20 0.1 -86.95 Wien=-88.0o

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM .
    Plot with spin-dance fit is: Spin-dance .
    For additional information see halog entry 3386402 .
    The final results (at Wien=-88.0o):
    Pz=(-86.95 +/- 0.2(stat) +/-1.0(syst)) %

  • March 31, 2016. 13:00 - 17:45 - O.Glamazdin, R.Pomatsalyuk, B. Henry, N. Saylor

    The beam energy is 10985MeV(HALLA:p), 1090.0MeV(linac), 123.MeV(injector), 5 passes.
    Injector angle is -13.22o (0o, 0o flipper).
    IHWP wave plate was IN. IHWP2 was OUT. Rotating HWP was IN . Raster was OFF.
    Beam was straight.
    Q1=-295.4A, Q2=-298.7A, Q3=105.75A, Q4=297.0A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 16010-16014 - Detector tune. Target #3, 3T.
    Runs 16015-16021 - Beam polariz. meas. Q3=105.75A.
    Runs 16022-16024 - Dead time meas.
    Runs 16025-16028 - Beam polariz. meas. Q3=58.2A.
    Runs 16029-16033 - Beam polariz. meas. Q3=20.6A.
    Runs 16034-16035 - Dead time meas.
    17:45 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The theta acceptance is about +/-3.5o and the mean analyzing power is 0.7636.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16015-16021 3 1.0 1.250/117.48 3.0T 86.81+/-0.24 0.4 86.42 Q3=105.75A
    16022-16024 3 1.0 1.250/117.48 3.0T - - - dead time
    16025-16028 3 1.0 1.250/117.48 3.0T 87.99+/-0.21 0.3 86.87 Q3=58.2A
    16029-16033 3 1.4 1.250/117.48 3.0T 87.11+/-0.30 0.4 87.21 Q3=20.6A
    16034-16035 3 1.4 1.250/117.48 3.0T - - - dead time
    Average 3 - 1.250/117.48 3.0T 87.40+/-0.14 7.4 86.79 Chi2=4.3

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3393948 .
    The final result:
    Pz=(+86.79 +/- 0.14(stat) +/- 1.0(syst)) %

  • April 19, 2016. 16:00 - 21:30 - O.Glamazdin, R.Pomatsalyuk

    The beam energy is 10982MeV(HALLA:p), 1090.0MeV(linac), 123.MeV(injector), 5 passes.
    Injector angle is -13.22o (0o, 0o flipper).
    IHWP wave plate was IN. IHWP2 was IN. Rotating HWP was IN . Raster was ON.
    Beam was through the Compton chicane.
    Q1=-295.4A, Q2=-298.7A, Q3=84.0A, Q4=297.4A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 16038-16045 - Detector tune. Target #3, 3T.
    Runs 16046-16054 - Beam polariz. meas. Q4=297.4A.
    Runs 16055-16061 - Dead time meas.
    Runs 16062-16065 - Beam polariz. meas. Q4=251.9A.
    Runs 16066-16070 - Beam polariz. meas. Q3=216.2A.
    21:15 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The theta acceptance is about +/-3.6o and the mean analyzing power is 0.7624.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16046-16054 3 1.5 1.254/117.48 3.0T 89.24+/-0.21 0.2 88.51 Q4=297.4A
    16055-16061 3 1.5 1.254/117.48 3.0T - - - dead time
    16062-16065 3 1.5 1.254/117.48 3.0T 89.21+/-0.21 0.7 87.96 Q4=251.9A
    16066-16070 3 1.5 1.254/117.48 3.0T 87.85+/-0.18 2.3 88.02 Q4=216.2A
    Average 3 - 1.254/117.48 3.0T 88.92+/-0.13 9.4 88.19 Chi2=2.0

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3400891 .
    The final result:
    Pz=(+88.19 +/- 0.13(stat) +/- 1.0(syst)) %

  • October 31, 2016. 10:30 - 14:30 - O.Glamazdin, R.Pomatsalyuk, S.Park

    The beam energy is 8495MeV(HALLA:p), 1050.0MeV(linac), 118.5MeV(injector), 4 passes.
    Wien angle is -53.5o (0o, 0o flipper).
    IHWP wave plate was OUT. IHWP2 was IN. Rotating HWP was IN . Raster was ON.
    Beam was straight.
    Q1=-209.6A, Q2=-124.0A, Q3=145.0A, Q4=238.8A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 16082-16086 - Detector tune. Target #3, 3T.
    Runs 16087-16091 - Beam polariz. meas. Q2=-209.6A.
    Runs 16092-16096 - Beam polariz. meas. Q2=-213.0A.
    Runs 16097-16100 - Beam polariz. meas. Q2=-173.0A.
    Run 16101 - Dead time measurement.
    14:30 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The mean analyzing power is 0.7715.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16087-16091 3 1.5 1.257/117.48 3.0T 86.31+/-0.16 0.5 85.82 Q2=-209.6A
    16092-16096 3 1.5 1.257/117.48 3.0T 88.31+/-0.19 4.0 87.59 Q2=-213.0A
    16097-16100 3 1.5 1.257/117.48 3.0T 87.92+/-0.19 0.2 87.22 Q2=-173.0A
    16101 3 1.5 1.257/117.48 3.0T - - - dead time
    Average 3 - 1.257/117.48 3.0T 87.37+/-0.10 38 86.75 Chi2=30

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3434629 .
    The final result:
    Pz=(+86.75 +/- 0.13(stat) +/- 1.0(syst)) %

  • November 28, 2016. 15:30 - 19:50 - O.Glamazdin, R.Pomatsalyuk

    The beam energy is 10590MeV(HALLA:p), 5 passes.
    Wien angle is 56.0o (0o, 0o flipper).
    IHWP wave plate was IN. IHWP2 was IN. Rotating HWP was IN . Raster was OFF.
    Beam was straight.
    Q1=-291.3A, Q2=-310.4A, Q3=127.7A, Q4=297.4A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 16105-16110 - Detector tune. Target #3, 3T.
    Runs 16111-16114 - Beam current 1.4uA.
    Runs 16115-16118 - Beam current 0.6uA.
    Runs 16119-16122 - Beam current 1.8uA.
    Runs 16123-16126 - Beam polariz. meas. Q1=-228.5A.
    Runs 16127-16130 - Beam polariz. meas. Q2=-254.6A.
    19:50 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The mean analyzing power is 0.7720.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16111-16114 3 1.4 1.250/117.48 3.0T 85.69+/-0.19 0.9 85.42 -
    16115-16118 3 0.6 1.250/117.48 3.0T 86.29+/-0.21 0.6 85.86 -
    16119-16122 3 1.8 1.250/117.48 3.0T 85.64+/-0.18 0.4 85.45 -
    16123-16126 3 1.4 1.250/117.48 3.0T 85.90+/-0.19 0.3 85.48 Q1=-228.5
    16117-16130 3 1.4 1.250/117.48 3.0T 85.83+/-0.20 2.5 85.26 Q2=-254.6A
    Average 3 - 1.250/117.48 3.0T 85.81+/-0.11 0.3 85.39 Chi2=0.3

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM and current .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3442220 .
    The final result:
    Pz=(+85.39 +/- 0.11(stat) +/- 1.0(syst)) %

  • December 07, 2016. 10:00 - 14:20 - O.Glamazdin, R.Pomatsalyuk

    The beam energy is 10592MeV(HALLA:p), 5 passes.
    Wien angle is 56.01o (0o, 0o flipper).
    IHWP wave plate was IN. IHWP2 was IN. Rotating HWP was IN . Raster was OFF.
    Beam was straight.
    Q1=-291.3A, Q2=-293.0A, Q3=127.7A, Q4=292.5A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Runs 16132-16139 - Detector tune. Target #3, 3T.
    Runs 16140-16145 - Beam polariz. meas Q1=-291.3.
    Runs 16146-16150 - Beam polariz. meas.Q1=-238.9A.
    Runs 16151-16155 - Beam polariz. meas.Q1=-291.3, Q2=-260.0A.
    Run 16156 - Beam current 0.5uA.
    14:20 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The mean analyzing power is 0.7723.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16140-16145 3 1.6 1.251/117.48 3.0T 84.80+/-0.16 1.0 84.54 Q1=-291.3
    16146-16150 3 1.6 1.251/117.48 3.0T 84.20+/-0.18 4.0 83.81 Q1=-238.9
    16151-16156 3 1.6 1.251/117.48 3.0T 84.44+/-0.18 1.8 84.09 Q1=-291.3, Q2=-260.0A
    Average 3 - 1.251/117.48 3.0T 85.81+/-0.10 3.2 84.18 Chi2=4.8

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM and current .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3444661 .
    The final result:
    Pz=(+84.18 +/- 0.10(stat) +/- 1.0(syst)) %

  • December 19, 2016. 10:45 - 14:20 - O.Glamazdin, S.Park, B.Henry

    The beam energy is 8498MeV(HALLA:p), 4 passes.
    Wien angle is 53.61o (0o, 0o flipper).
    IHWP wave plate was IN. IHWP2 was IN. Rotating HWP was IN . Raster was ON.
    Beam was straight.
    Q1=-209.6A, Q2=-173.2A, Q3=145.0A, Q4=238.8A, Dipole=440A.
    Helicity frequency=30Hz, delay=0 windows, pattern=Quartet.
    Target #3, 3T.
    Runs 16159-16164 - Beam polariz. meas. Q2=-173.2A.
    Runs 16165-16169 - Beam polariz. meas. Q2=-213.1A.
    Runs 16170-16175 - Beam polariz. meas. Q2=-124.0A.
    14:20 Moller target is parked, Moller target movement is unmasked. Moller dipole is OFF,
    quads settings are restored, Moller target magnet is turned OFF.

    The mean analyzing power is 0.7675.
    Runs Target B.cur, uA Motor steps Field Polarization % Chi2 Corrected Comments
    16159-16164 3 1.5 1.253/117.48 3.0T 86.90+/-0.15 0.7 86.27 Q2=-173.2A
    16165-16169 3 1.5 1.253/117.48 3.0T 87.13+/-0.17 1.6 86.55 Q2=-213.1A
    16170-16175 3 1.5 1.253/117.48 3.0T 86.27+/-0.17 1.7 85.77 Q2=-124.0A
    Average 3 - 1.253/117.48 3.0T 86.78+/-0.10 6.9 86.20 Chi2=5.4

    The Moller Log Book scan is given here .
    The table with detailed information is given here and here .
    Plots with beam position and beam energy instability are: Energy and BPM and current .
    Plot with Moller results is: comparison .
    For additional information see halog entry 3448331 .
    The final result:
    Pz=(+86.20 +/- 0.10(stat) +/- 1.0(syst)) %