Quad Tuning 1pass 48d

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 HRS spectrometer tunes for the left and right arms with the new quads in place of Q1s.
* 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 HRS tunes need to be adjusted to change the size of the acceptance.
* This process will be repeated until the spectrometer tune is satisfactory.

• Left-HRS Kinematics: 1st Pass (E_beam = 2.2 GeV)
  

Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Q2 [GeV2]	W [GeV]	Rate [Hz] at 20 μA	minutes for 2M events at 20 μA
2.217	1.0	17.5	0.20	1.722	9800 (3260 Hz with ps = 3)	10

We want to take runs with the following Q1 currents:

1. 0%: 213.0 A
2. -6%: 200.22 A
3. -5%: 202.35 A
4. -4%: 204.48 A
5. -3%: 206.61 A
6. +5%: 223.65 A

• Right-HRS Kinematics: 1st Pass (E_beam = 2.2 GeV)
  

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:

1. 0%: 181.05 A
2. -6%: 170.187 A
3. -5%: 171.9975 A
4. -4%: 173.808 A
5. -3%: 175.6185 A
6. +5%: 190.1025 A