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
   Check SHMS tune with carbon elastics at 7.5 degrees.
+
   SHMS delta scan with carbon elastics  
 
   Defocused SHMS run for detector calibration
 
   Defocused SHMS run for detector calibration
 
   Take data in HMS "parasitically" to check scintillator and PID thresholds in trigger.
 
   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 - delta scan
   SHMS settings: P=2.214 GeV, Theta=7.45 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
   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
 
   HMS settings: P=1.0 geV, Theta=14.01 degrees
 
   HMS settings: P=1.0 geV, Theta=14.01 degrees

Latest revision as of 08:52, 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
 SHMS delta scan with carbon elastics 
 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 - delta scan
 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
 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