Installation and Commissioning

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Before Beam

• Trigger Timing Checkout (placeholder slides)
• HRS Detector Checkout
• Beamline
• Spectrometer Angles
• Magnets
• DAQ
• Software

With First Beam

1. Beamline
   1. Beam Centering
   2. Raster Size Calibration
   3. BPM Calibration (pedestal run, Bullseye scan)
   4. BCM Calibration
   5. ARC Energy Measurement (parasitic only)
2. Trigger Timing Checkout
3. Detector Checkout with single foil, multi foils, and target cells
   1. VDC wire hits and efficiencies
   2. TDC distributions of scintillators, VDCs, and GC
   3. fastbus ADC distributions of scintillators, GC, and calorimeters
   4. FlashADC distributions of scintillators and GC
   5. Check all scalers
   6. check thresholds

   
   

4. HRS Optics with saturated Q1 (LHRS p0>3 GeV, RHRS?)
   1. Multifoil target:
      1. one DIS run without sieve for y-target calibration
      2. sieve on, take a long DIS run for theta, phi calibration
   2. Hydrogen target: elastic peak check (move RHRS to a larger angle), and delta scan at +-2%, +-4% of elastic peak
5. Boiling Study at 17 degree on 3H, 3He, 2H, H targets and empty cell
6. Detector Calibrations (in parallel with other activities once we have the electron data)

Optics commissioning runs

Target Boiling Study

• H3 Target

Run number	Target	Beam Current	Raster Size	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	H3	25uA	2x2 cm
	H3	15uA	2x2 cm
	H3	5uA	2x2 cm

• He3 Target

Run number	Target	Beam Current	Raster Size	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	He3	25uA	2x2 cm
	He3	15uA	2x2 mm
	He3	5uA	2x2 cm

• C12 target for a normalization check for beam-current dependent rate check.

Run number	Target	Beam Current	Raster Size	Ebeam [GeV]	P0 [GeV/c]	θe [deg]	Comment
	Carbon-Foil	25uA	2x2 mm
	Carbon-Foil	15uA	2x2 mm
	Carbon-Foil	5uA	2x2 mm

Beam Energy Measurements

Energy of central ray (MeV)	Dispersive mode	Halog entry
11000.00
4400
2200