• To do during pre-beam access:
  • 1)hook up H+, H-
  • 2)hook up V/F current monitor
  • 3)check shielding
  • 4)remove Howard's detector
  • 5)install hodoscope
  • 6)pulser tests
  • 7)cosmics
• 1) Beam in Hall, I=1-3 microAmps, target out
• 2)Set Moller magnets (target out):
  • Q1=48.776
  • Q2=85.855
  • Q3=3.4408
  • D=-176.44
• 3)BCM calibration/check:
  • PLU logic set so H+,H- always on.
  • Vary current up to 10 microAmps (if allowed). Take 3 measurements.
  • Compute our current for each setting from our scaler values.
  • Compare to standard BCM setup.
• 4) Install Moller target.
• 5) Check current calibration again, 1-2 points.
• 6)Put in helicity bits (in PLU). Do ADC run with low threshold.
• 7)Scaler runs--look at rates:
  • coinc left (aperture left + summed lead glass left)
  • coinc right
  • total coinc (Moller coincidence)
  • accidentals (delayed coincidence)
  • (raw rates on aperature)
• 8)Vary dipole field +-10%, scaler runs, each time do #7:
  • Plot coincidence/accid rate as a function of dipole current.
  • Look for peak.
• 9)Fixed dipole field at coincidence peak value:
  • Look at coinc vs. Q1 and Q2 fields.
  • Make 2-D plot.
  • Do similar studies with Q3.
• 10)ADC runs, set all magnetic fields at coincidence peak values:
  • Vmax=2000V for aperature and lead glass.
  • gain match ADC's gated on Moller coincidence.
• 11)Lead glass threshold studies (very quick measurements):
  • As a function of lead glass threshold check:
    • Ncoinc
    • Naccid
    • Nleft
    • Nright
  • Make a plot of the ratio Ncoinc/Naccid vs. threshold.
• 12)Aperture threshold studies (do quickly if running out of time):
  • As a function of aperture threshold check:
    • Ncoinc
    • Naccid
    • Nleft
    • Nright
  • Make a plot of the ratio Ncoinc/Naccid vs. threshold.
  • If time, do this with different HV's (Vmax=2000.)
• 13)Measure instrumental asymmetry with Bhelmholtz=0, target perpendicular to beam (since beam is polarized).
  • Do this for several currents.
  • Check that accidentals look reasonable (~I^2).
• 14) Measure Pe, h=60 Hz:
  • I=2,4,6,8,10 (if allowed).
  • Cross check with Mott.
• 15)Hodoscope studies.
• 16)Vary injection angle and cross check with Hall C.

July 1, 1997, Tuesday

00:00-08:00	D. Dale*		
		A. Gasparian		

08:00-16:00	V. Gorbenko		
		A. Gasparian*		
		M. Finn (FPP)
		K. Woojesurya (FPP)
		
16:00-24:00	D. Dale*		
		T. Gorringe
		C. Glashausser (FPP)
		R. Pomatsalyuk
		

July 2, 1997, Wednesday

00:00-08:00	A. Glamazdin*		
		M. Jones (FPP)		
		V. Zeps
		S. Malov (FPP)
		
8:00-12:00	V. Gorbenko		
		A. Gasparian*		
		G. Quemmenar (FPP)
					   
12:00-16:00	Bogdan detector tests, Moller off.

16:00-24:00	D. Dale*
		R. Pomatsalyuk
	        J. McIntyre(FPP)
 

July 3, 1997, Thursday

00:00-08:00	A. Glamazdin*		
		T. Gorringe		
		M. Jones (FPP)		
		S. Malov (FPP)

08:00-1600      V. Zeps
                A. Gasparian*
                V. Gorbenko
		

* Shift leaders

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