Parasitic Production Run Plan R-HRS 48.75 degrees

Proton Elastic Kinematics

* If you need to increase the spectrometer momentum setting, make sure you cycle Q2 and Q3 as per the cycling procedure.
* Elastic electron rates assume 15 μA on 15 cm LH2 target, 5 mSr acceptance.
* Use the following prescale factors: ps1=1, ps2=1, ps3=1, ps8=100. All other triggers should have zero prescale factor.
* For the optics pointing run, decrease the spectrometer momentum to 0.85 GeV/c.  The right dipole will need about 1.5 hours to settle.
* Take one hour on the optics target.
* After the optics run is completed, then increase the spectrometer momentum back to the elastic setting.  
 
  Make sure to cycle the right Q2 and Q3 when increasing the momentum.
* The 15 cm dummy runs need to be taken at the elastic setting.  So keep the momentum as is for this run. 
* A GMp expert will check the data quality.

• 4th Pass (E_beam = 8.5 GeV) Time estimate: 19 days @ 15 μA

Target	Raster	Ebeam [GeV]	P0 [GeV/c]	Q1 Current [Amps]	θe [deg]	Q2 [GeV2]	Electron Rate [Hz] at 15 μA	PAC days at 15 μA
15 cm LH2	2 x 2 mm2	8.517	1.804	361.54	53.47	12.56	0.011	19 (for 17k events)
15 cm Dummy	2 x 2 mm2	8.517	1.804	361.54	53.47	12.56	----	1 hour
Single Carbon	Off	8.517	0.85	170.35	53.47	5.86	0.83	1 hour (for 3k events)

• 5th Pass (E_beam = 10.6 GeV) Time estimate: 22 days @ 15 μA

Target	Raster	Ebeam [GeV]	P0 [GeV/c]	Q1 current [Amps]	θe [deg]	Q2 [GeV2]	Electron Rate [Hz] at 15 μA	PAC days at 15 μA
15 cm LH2	2 x 2 mm2	10.617	2.165	433.89	48.75	15.82	0.003	22 (for 5.7k events)
15 cm Dummy	2 x 2 mm2	10.617	2.165	433.89	48.75	15.82	----	1 hour
Optics	Off	10.617	0.85	170.35	48.75	6.15	3.0	0.5 hour (for 5.4k events)