final G0 shift summary for 2006: 20-dec-06, 16:00-21:00

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User name Breuer

Log entry time 21:09:43 on December 20, 2006

Entry number 129990

keyword=final G0 shift summary for 2006: 20-dec-06, 16:00-21:00

on shift: H. Breuer and M. Versteegen (target); Dec. 19, 2006, 16:00 - 21:00

varying guest, includign Mat to shut down SMS, Greg and Tanja to shut down target, and Dave G. to coordinate.

Highlights

Production running at 20 uA with Cerenkov trigger set for MULT 2 for quartz octants 1,3,4.5,7,8 and MULT 3 for borosilicate octants 2 and 6
two runs with 5 uA with normal Cerenkov mult (Q:2,B:3) and inverted (Q:3,B:2)
completed last run with beam for this year; magnet is ramping down, target will be warmed up soon: Merry Christmas and Good Luck for G0 in the coming year.

Time-line

Conditions at 16:30:

    lD₂ target. 
    20 µA beam  (689 MeV from Accellerator screen)
    SMS Magnet at 3496 A. 
    Raster on (1.8 mm x 1.8 mm setpoints). 
    11 mm Halo target is in.  
    CFD thresholds at 100 mV
    IHWP is OUT with Rotation wave at 0
    Herbert's paddle: 4.4 µA (0.10 during beam trip); HV at 2000V
    Halo rates all in the green
    we are running "ts_Full"
    charge and hall-A feedbacks are running
    A_bcm1 RMS is 275 ppm, mean3
    diff_x_targ RMS is 19.5 um, mean -0.2
    diff_y_targ RMS is 11.0 um, mean 0.01
    A_energy RMS is 4.1 keV, mean 0.02
    pos G0B very stable at -0.0/+0.1 mm
    lumis between 137 and 201 ppm RMS

Start of shift: run 33040 in progress

Run list

33040 - Production 20 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400.
33041 - Production 20 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400.
33042 - Production 20 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400.
33043 - Production 20 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400.
33044 - Production 5 uA LD2, IHWP OUT, Quartz: M3, BoroSil: M2; PS2 = 400.
33045 - Production 5 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400.
33046 - test, swapping cables, to identify bad cell origin
33047 - Production 20 uA LD2, IHWP OUT, Quartz: M2, BoroSil: M3; PS2 = 400. ; run end when MCC lost IOC for beam position; when I saw it at 2 mm off center I asked for beam off and ended run;
this was the last run with beam for this year.