Difference between revisions of "Start-up plan"
From Hall A Wiki
| Line 14: | Line 14: | ||
** scaler rates: post snapshots to halog | ** scaler rates: post snapshots to halog | ||
* Optics calibrations (Experts: Bogdan, John, Vardan, ...) | * Optics calibrations (Experts: Bogdan, John, Vardan, ...) | ||
| + | ** You may need to cycle the quads | ||
| + | ** Set the spectrometer magnets: [https://hallaweb.jlab.org/wiki/index.php/How_to_set_HRS_magnets] | ||
** initial tune: p0: 1.1 GeV, polarity: LHRS (pos), RHRS (neg) | ** initial tune: p0: 1.1 GeV, polarity: LHRS (pos), RHRS (neg) | ||
Left Arm: | Left Arm: | ||
| Line 25: | Line 27: | ||
Q3: 1.1 GeV - 528.000 Amps | Q3: 1.1 GeV - 528.000 Amps | ||
| − | |||
** Start with RHRS. Set LHRS (positive polarity) RHRS (negative polarity). | ** 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. | ** 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]] | ||
Revision as of 14:31, 8 February 2019
Start-up run plan
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. 2. ion chamber calibrations. Yves has a special target to insert. 3. Beam and target alignment (1x1 raster, carbon hole target, wire target, S3 scintillator. setting ready for Yves). 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, ...)
- You may need to cycle the quads
- Set the spectrometer magnets: [1]
- initial tune: p0: 1.1 GeV, polarity: LHRS (pos), RHRS (neg)
Left Arm: Q1: 1.1 GeV - 152.823 Amps Q2: 1.1 GeV - 449.460 Amps Q3: 1.1 GeV - 528.275 Amps
Right Arm: Q1: 1.1 GeV - 146.762 Amps Q2: 1.1 GeV - 449.218 Amps Q3: 1.1 GeV - 528.000 Amps
- 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
