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    User name Sulkosky

    Log entry time 23:04:50 on July23,2003

    Entry number 106364

    Followups:

    keyword=Access to check BeO position

    We made an access to check the BeO target, since the beam spot was off considerably in both x and y by about 5 mm when viewed on the target. I checked the BeO target and it did not seem to be damaged from the beam. However I also noticed that when the target ladder was installed, the extensions for the BeO target where not turned in the entire way. Plus the extensions were in at different lengths. This would result in the BeO target having an angle with respect to the beam line. After screwing the extensions in further, the BeO target was back in position where it was before the target ladder was replaced.

    Afterwards, the BeO target was removed for optics at 1 GeV.

    During the access, I also adjusted the cooling jets a bit to improve the cooling for the cell.



    rent readback : 0 Left Arm Q1 power supply current : Left Arm Q1 momentum : 0.50004 Left Arm Q1 gauss meter : Left Arm Q1 power supply polarity : Left Arm Q2 power supply current : 215.298 Left Arm Q2 momentum : 0.499995 Left Arm Q2 gauss meter : Left Arm Q2 power supply polarity : disabled Left Arm D1 power supply current : 166.606 Left Arm D1 momentum : 0.499997 Left Arm D1 NMR : 0.185239 Left Arm Q3 power supply current : 198.879 Left Arm Q3 momentum : 0.499547 Left Arm Q3 gauss meter : Left Arm Q3 power supply polarity : disabled Average current of the two cavities : 0.015898 Current on Unser monitor : -14.4113 Current on Upstream bcm : 0.0170776 Current on Downstream bcm : 0.0152096 Upstream Cavity Coefficient : 76.7 Downstream Cavity Coefficient : 78.9 Current on IBC0L02 (source) : 90.1792 Beam energy : 2138.56 MBSY1c magnet current (amp) : 88.987 Radiator 5V Linear Supply : 0 Radiator Encoder : 0 Left Arm Arm Collimator : 0.0641113 HacL_HPE1313A:0_Ch58 : -0.135254 HacL_HPE1313A:0_Ch55 : 26.0254 HacL_HPE1313A:0_Ch54 : -0.0668945 HacL_alignROLL : HacL_alignPITCH : HacL_alignHPT : Left Arm Angle Floor Angle : Left Arm Angle Vernier : Left Arm Scattering Angle : Wien angle : -59.5148 Helicity Mode ON/OFF Random/Toggle : OFF Wien BDL : -1378.9 Wien field : 39.636 Laser attenuation Hall A : 100 Laser power Hall A : 69 Half-wave plate (off=out) : OUT rotating waveplate : 7000 G0 Helicity Settle Set : 500 usec G0 Helicity Delay Set : No Delay G0 Helicity Pattern Set : Quartet G0 Helicity Settle Read : 500 usec G0 Helicity Delay Read : No Delay G0 Helicity Pattern : Quartet Survey X offset bpmA : -0.63 Survey Y offset bpmA : -0.9 Survey X offset bpmB : 0.77 Survey Y offset bpmB : -1 Polarized 3He Coil Current Longitudinal : -6.859 Polarized 3He Coil Current Transverse : -0.044 HALLA:p : 2136.16 HALLA:dpp : 0 Transverse gradient coils (A) setup current : 0 Transverse gradient coils (A) readback current : 0.000915527 Longitudinal upstream gradient coil (B) setup current : 0 Longitudinal upstream gradient coil (B) readback current : 0.00488281 Longitudinal downstream gradient coil (C) setup current : 0 Longitudinal downstream gradient coil (C) readback current : -0.000915527 Small vertical gradient coils (D) setup current : 0 Small vertical gradient coils (D) readback current : 0 T-SETTLE : HAPPEX Delay in cycles : Pair/Quartet Pattern :