Installation and Commissioning

Back to 2017 Fall Run Plan Back to Tritium-Main

Before Beam

• Trigger Timing Checkout (placeholder slides)

HRS Detector Checkout

• Beamline
  • Twiddle Measurement to check BPMs (placeholder slides)
  • Clock run with raster on, check and compare fastbus and Flash raster signals (placeholder slides)
  • Harp Checkout/Testing
  • Unser Checkout/Testing
  • Beam Energy Measurements System Checkout/Testing
  • Optical Radiation Monitor?

• Spectrometer Angles

LHRS

Angle	Momentum	Duration	Experiment	Run Number Ranges	Report	Comment
17.0	3.980	175 hrs	x>1	1111 ~ 2222	link
17.0	3.710	27 hrs	x>1	1111 ~ 2222	link

RHRS

Angle	Momentum	Time	Experiment	Run Number Ranges	Report	Comment
28.5	2.910	132 hrs	x>1	~90000	link
28.5	2.715	75 hrs	x>1	~90000	link
28.5	2.530	38 hrs	x>1	~90000	link

• Magnets
  • Decide on scaling function for Q1s (not linear!)
  • Test LHRS full momentum range
  • Test RHRS full momentum range
  • LHRS Initial Momentum: ??.?? GeV/c
  • RHRS Initial Momentum: ??.?? GeV/c

• DAQ
  • LHRS DAQ machine: adaq1
  • RHRS DAQ machine: adaq2
  • Currently Functional online analysis machines: adaq3
  • Keep only necessary CODA configurations
  • Setup/Test remote power cycle of all crates

• Software
  • Demonstrate/write-up new Strip Chart procedure
  • Verify BTA functionality
  • Demonstrate working Podd1.6, ROOT6, replay and online plots with cosmics
  • Demonstrate updated spotL/spotR code (take special run with clock trigger and raster on)
  • Demonstrate updated online liveTime calculations with cosmics/clock

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