Difference between revisions of "Run plan/To do list - Tuesday, December 19 2017 - day shift"

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* Overview
 
* Overview
 
   Controlled access at 8:30 for target cooldown
 
   Controlled access at 8:30 for target cooldown
  Continue owl shift program as needed:
+
   Check SHMS tune with carbon elastics at 7.5 degrees.  
   Check SHMS tune with carbon elastics at 7.5 degrees. Take data in HMS "parasitically" to check scintillator and PID thresholds in trigger.
+
  Defocused SHMS run for detector calibration
 +
  Take data in HMS "parasitically" to check scintillator and PID thresholds in trigger.
 +
 
 
* SHMS carbon elastics at 7.5 degrees - will check/establish SHMS tune
 
* SHMS carbon elastics at 7.5 degrees - will check/establish SHMS tune
 
   SHMS settings: P=2.214 GeV, Theta=7.45 degrees  
 
   SHMS settings: P=2.214 GeV, Theta=7.45 degrees  
 +
 +
  Take 3 more Q1/Q2/Q3 combinations for Mark and Holly to look at later.
 +
  1. Q1=1.01*nominal, Q2=1.04*nominal, Q3=1.03*nominal (current setting at start of shift)
 +
  2. Q1=1.01*nominal, Q2=1.04*nominal, Q3=1.02*nominal (just scale from previous setting)
 +
  3. Q1=1.01*nominal, Q2=1.03*nominal, Q3=1.02*nominal (just scale from previous setting)
  
 
* HMS threshold scan
 
* HMS threshold scan

Revision as of 07:08, 19 December 2017

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
 Controlled access at 8:30 for target cooldown
 Check SHMS tune with carbon elastics at 7.5 degrees. 
 Defocused SHMS run for detector calibration
 Take data in HMS "parasitically" to check scintillator and PID thresholds in trigger.
  • SHMS carbon elastics at 7.5 degrees - will check/establish SHMS tune
 SHMS settings: P=2.214 GeV, Theta=7.45 degrees 
 Take 3 more Q1/Q2/Q3 combinations for Mark and Holly to look at later.
 1. Q1=1.01*nominal, Q2=1.04*nominal, Q3=1.03*nominal (current setting at start of shift)
 2. Q1=1.01*nominal, Q2=1.04*nominal, Q3=1.02*nominal (just scale from previous setting)
 3. Q1=1.01*nominal, Q2=1.03*nominal, Q3=1.02*nominal (just scale from previous setting)
  • HMS threshold scan
 HMS settings: P=1.0 geV, Theta=14.01 degrees
 Take 15 minutes runs at 10 muA with HMS Hodoscopes discriminator thresholds at: 30 mV, 20 mV, 40 mV and 50 mV. (Expert: Simona M.)
 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
     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