Run plan/To do list - Tuesday, December 19 2017 - swing shift

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Notices

  1. SHMS DIPOLE MAX CURRENT IS 2100 A
  2. Do not rotate either SHMS or HMS if the HMS dipole current is above 2500 A
  3. The SHMS angle is currently 7.5 degrees. ONLY ROTATE TO LARGER ANGLES.
    1. Once we have rotated to larger angle, the minimum angle will be 10 degrees.
    2. Smaller SHMS angles will require an access and assistance from Steve Lassiter/Mike Fowler
  4. Nominal beam positions (for now): x=-1.0, y=-0.75 at IPM3H07C
  5. Be sure to fill out the beam time accounting - edit the form as necessary. The values "auto-filled" from EPICS are not always accurate.

Runplan

  • Overview
 Complete SHMS delta scan
 Complete HMS trigger threshold scan (expert driven, Eric P.)
 SHMS quartz - gain matching 
 Time in SHMS trigger
 SHMS threshold scans (hodoscopes and PID)
 Defocused optics for detector calibration
  • Complete SHMS delta scan (carbon elastics at 7.5 degrees)
 SHMS settings: P_elastic=2.214 GeV, Theta=7.45 degrees
 Scan carbon elastic peak from delta=-12% to +30% - momentum settings on spreadsheet in Counting House
 
  • HMS threshold scan
 HMS settings: P=1.0 geV, Theta=14.01 degrees
 Trigger Threshold Scan: Insert target 0.5% Carbon and take 15 minutes runs at 10 muA with various thresholds for the CER and PRESHOWER/SHOWER PID legs of the trigger (Expert: Eric P.)
     HMS Threshold Scan
     Run 1) CER 40, PRSH-LO 40, PRSH-HI 60, SH-LO 40 ---> These are the initial settings
     Run 2) CER 30, PRSH-LO 30, PRSH-HI 50, SH-LO 30
     Run 3) CER 25, PRSH-LO 25, PRSH-HI 40, SH-LO 25
     Run 4) CER 20, PRSH-LO 20, PRSH-HI 30, SH-LO 20
     Run 5) CER 15, PRSH-LO 15, PRSH-HI 20, SH-LO 15
     Run 6) CER 10, PRSH-LO 10, PRSH-HI 10, SH-LO 10
  • Time in SHMS trigger (Expert: Eric P.)
  • SHMS threshold scan
     SHMS Threshold Scan
     Run 1) HGCER 40, PRSH-LO 40, PRSH-HI 60 ---> These are the initial settings
     Run 2) HGCER 30, PRSH-LO 30, PRSH-HI 50
     Run 3) HGCER 25, PRSH-LO 25, PRSH-HI 40
     Run 4) HGCER 20, PRSH-LO 20, PRSH-HI 30
     Run 5) HGCER 15, PRSH-LO 15, PRSH-HI 20
     Run 6) HGCER 10, PRSH-LO 10, PRSH-HI 10
  • SHMS "no quad" run
 Take carbon elastics at delta=0 with Q1=Q2=Q3=0. Will need to insert collimator in front of bender (Expert: Mark Jones)