Difference between revisions of "Start-up plan"

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== Start-up run plan ==
 
== Start-up run plan ==
 +
Update (Feb. 9, 9AM)
 +
 
Item 1-4 to be done by the MCC.
 
Item 1-4 to be done by the MCC.
 
RC will be at the MCC and help communicating with the shift crew.
 
RC will be at the MCC and help communicating with the shift crew.
 
* Beam and target alignment
 
* Beam and target alignment
   1. Beam to the dump. Septum off, no target.
+
   1. Beam to the dump. Septum off, no target.(DONE)
   2. ion chamber calibrations. Yves has a special target to insert.
+
   2. ion chamber calibrations. Yves has an aluminium target to insert.
   3. Beam and target alignment (1x1 raster, carbon hole target, wire target, S3 scintillator. setting ready for Yves).
+
   3. Beam and target alignment (1x1 raster, vertical wire target, S3 scintillator. setting ready for MCC).
 +
    - [https://logbooks.jlab.org/entry/3649271 Yves's instruction]: ELOG 3649271
 +
    - Contact Silviu before start
 +
    - After done with the wire target, ask beam on carbon hole and do spot++.
 
   4. Set corrector magnets with septum on. Beam to dump. Will be done quickly.  
 
   4. Set corrector magnets with septum on. Beam to dump. Will be done quickly.  
  
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** Check online replay plots. Experts will be at the CH to check.
 
** Check online replay plots. Experts will be at the CH to check.
 
** scaler rates: post snapshots to halog
 
** scaler rates: post snapshots to halog
* Optics calibrations (Experts: Bogdan, John, Vardan, ...)
+
* Optics calibrations (Experts: Bogdan, John, Vardan, Ed...):
** Set the spectrometer magnets: [https://hallaweb.jlab.org/wiki/index.php/How_to_set_HRS_magnets]
+
** Set the spectrometer magnets if not done yet: [https://hallaweb.jlab.org/wiki/index.php/How_to_set_HRS_magnets]
** Start with RHRS. Set LHRS (positive polarity) RHRS (negative polarity).
+
** initial tune: p0: 1.28 GeV, polarity: LHRS (pos), RHRS (neg)
** Once the right arm is finished, move on to the LRHS. Set LRHS (neg) RHRS (pos).   
+
OPTICS
 +
Left arm (1.28 GeV)
 +
Q1:177.83
 +
Q2:523.008
 +
D:435.085
 +
Q3:614.72
 +
 
 +
Right arm (1.28 GeV)
 +
Q1:170.778
 +
Q2:522.726
 +
D:442.522
 +
Q3:614.4
 +
Septum:1104.05
 +
 
 +
** Start with RHRS. Set LHRS (positive polarity) RHRS (negative polarity)
 +
** Once the right arm is finished, move on to the LRHS. Set LRHS (neg) RHRS (pos). Leave the polarity as it is for the production.
 +
   
 +
 
 
* BPM calibration. Instruction: [[BPM]]
 
* BPM calibration. Instruction: [[BPM]]

Latest revision as of 09:08, 9 February 2019

Start-up run plan

Update (Feb. 9, 9AM)

Item 1-4 to be done by the MCC. RC will be at the MCC and help communicating with the shift crew.

  • Beam and target alignment
 1. Beam to the dump. Septum off, no target.(DONE)
 2. ion chamber calibrations. Yves has an aluminium target to insert.
 3. Beam and target alignment (1x1 raster, vertical wire target, S3 scintillator. setting ready for MCC).
    - Yves's instruction: ELOG 3649271
    - Contact Silviu before start
    - After done with the wire target, ask beam on carbon hole and do spot++.
 4. Set corrector magnets with septum on. Beam to dump. Will be done quickly. 

Once Yves is done and MCC is ready to deliver CW beam to Hall A:

  • Detector checkout:
    • do in parallel with optics runs.
    • Check online replay plots. Experts will be at the CH to check.
    • scaler rates: post snapshots to halog
  • Optics calibrations (Experts: Bogdan, John, Vardan, Ed...):
    • Set the spectrometer magnets if not done yet: [1]
    • initial tune: p0: 1.28 GeV, polarity: LHRS (pos), RHRS (neg)

OPTICS

Left arm (1.28 GeV)
Q1:177.83
Q2:523.008
D:435.085
Q3:614.72
Right arm (1.28 GeV)
Q1:170.778
Q2:522.726
D:442.522
Q3:614.4
Septum:1104.05
    • Start with RHRS. Set LHRS (positive polarity) RHRS (negative polarity)
    • Once the right arm is finished, move on to the LRHS. Set LRHS (neg) RHRS (pos). Leave the polarity as it is for the production.


  • BPM calibration. Instruction: BPM