Difference between revisions of "Tuesday, November 18: DAY Shift"

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** Kinematics, DVCS Kin1: Ebeam = 7.3 GeV, P<sub>LHRS</sub>=1.1981 GeV,  Theta_HRS=22.83, Theta_calo=12.35
 
** Kinematics, DVCS Kin1: Ebeam = 7.3 GeV, P<sub>LHRS</sub>=1.1981 GeV,  Theta_HRS=22.83, Theta_calo=12.35
 
** Make sure to use the DVCS configuration for all runs.
 
** Make sure to use the DVCS configuration for all runs.
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** Around noon, MCC took beam away from Hall D to begin injector work in an attempt to set up multi-hall running.  This is expected to take 2-4 hours.
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** Due to continued beam trips at 1C12 and the required work needed to fix the beam issues, Hall A will not receive CW the rest of today.  No beam is expected on DAY shift.
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** Then tuning for the Hall A line will begin with eventual CW beam to Hall A.
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** This morning Hall A went to controlled access, primarily to address an issue with the left HRS dipole controls. One this work is completed, Hall A will go back to beam permit.
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** After completion of the beam tuning for Hall A, execute the following steps of the "Beamline" run plan [https://hallaweb.jlab.org/wiki/index.php/Beamline here].
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*** Note that we will NOT be going through the Compton chicane.
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*** Initial BPM/Raster checks/Beam centering
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*** BPM Calibrations (Bullseye Scan) [1-2 hours]
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*** Superharp Scan with Raster off/on
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** If time remains, start spectrometer checkout and begin looking for HRS-calorimeter coincidences. For this part of the plan - contact Carlos (contact info on the white board). The calorimeter HV will need to be turned on and put in the correct position - this will be done by Carlos or his assigned substitute.
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** Preliminary BCM Calibrations up to 10-20 &mu;A, or what MCC can deliver if lower than this.
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** <b>Beam studies will begin around 8:30 am for 2-8 hours</b>.
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Latest revision as of 11:03, 18 November 2014

Go back to Daily Run Plan Daily Run Plans

  • General considerations
    • Vincent Sulkosky is the current Run Coordinator. Please contact me directly via RC phone 757-876-1787
    • Follow the generic Instructions for shift takers
    • Shift leaders: Please make sure to fill out the beam time accounting form and write a "Shift Summary" log entry at the end of your shift regardless if there is beam or not.
    • In general, technical staff should not be contacted by the shift crew - please call the RC first.
    • If the run plan calls for some significant period of beam at 10 uA or greater please call Mahmoud Ahmad, who would like to perform a parasitic beam diagnostic test (no impact to us). His contact information will be written on the white board in the Counting House.
  • Instructions for this shift
    • The target operator is required to supervise the cryo-target.
    • Kinematics, DVCS Kin1: Ebeam = 7.3 GeV, PLHRS=1.1981 GeV, Theta_HRS=22.83, Theta_calo=12.35
    • Make sure to use the DVCS configuration for all runs.
    • Due to continued beam trips at 1C12 and the required work needed to fix the beam issues, Hall A will not receive CW the rest of today. No beam is expected on DAY shift.
    • This morning Hall A went to controlled access, primarily to address an issue with the left HRS dipole controls. One this work is completed, Hall A will go back to beam permit.
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