Right Quad Tuning 2pass 48d
From Hall A Wiki
Procedure without Sieve-slit
- Kinematics need to be updated!
- Time estimate: 1-2 hours
* Take a run at the following kinematics without the sieve-slit collimator. * Start with initial right HRS spectrometer tune with the new quad in place of right Q1. * If you need to increase the spectrometer momentum setting, make sure you cycle Q2 and Q3 as per the cycling procedure. * Electron rates assume 9 out of 11 carbon foils, 5 mSr acceptance, and 8% delta acceptance. * A GMp expert will check the data quality and decide, if the right HRS tune needs to be adjusted to change the size of the acceptance. * This process will be repeated until the spectrometer tune is satisfactory.
Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | W [GeV] | Rate [Hz] at 20 μA | minutes for 71k events at 20 μA |
2.217 | 0.85 | 48.75 | 1.28 | 1.47 | 119 | 10 |
We want to take runs with the following Q1 currents:
- 0%: 159.75 A
- -6%: 150.165 A
- -5%: 151.7625 A
- -4%: 153.36 A
- -3%: 154.9575 A
- +5%: 167.7375 A