Beam Test Jul 27 2012

Tune

Energy Switch	Out (High En)
Solenoid 1	13.9 A
Solenoid 2	4.1 A
Gun Hor	-0 A
Gun Ver	+0.2 A
Output Hor	-0.3 A
Output Ver	-0 A
Rep Rate	17
Gun HV	10 (Knob Setting)
Gun Grid Voltage	10 (Knob Setting)
RF frequency	2856.321 MHz
Modulator HV Power Supply	4.19 (Knob Setting)
RF macro Pulse Length (FWHM)	300 ns
Q1 (A)	-3
Q2 (A)	+0.8
Q3 (A)	+2
Q4 (A)	0
Q5 (A)	0
Q6 (A)	0
Current at FC0	96 mA

Beam Current Calibration of Scint Left

Determine if the Beam Left Scintillator is linear with beam current.

run#	FC1	Scint Left (Ch9)	Reprate	start	stop	Int Rate	comments
3696		2335		17:30:08	17:31:39 ( s)	11 events/s	first measurement at full current
3697		59		17::	17:: ( s)	events/s	cut the current in half
3698				17::	17:: ( s)	events/s
3699	100 px			17::	17:: ( s)	events/s

1. T1 out, disable D1, send the beam to FC0, take scope image of the area.

2. T1 in, enable D1, bend the beam by 90 deg, take a run with 1000 events.

Energy calibration of Scint 1

With T1 ande T2 out, send 1,2,6, and 10 MeV electrons to Scintillator 1 located at the end of the 90 degree beam line

Resume poitron production using 10 MeV eletrons

Insert Gun trigger into VME scaler