Beam Test Jul 18 2012

Tune up 2 MeV into 90 degree line

Check results from yesterday

Lower beam current so single pulses are observed in scintillator

Install thick scintillator for energy calibration

Tune

Energy Switch	Out (High En)
Solenoid 1	6.2 A
Solenoid 2	3.3 A
Gun Hor	-0.2 A
Gun Ver	0 A
Output Hor	-0.3 A
Output Ver	0 A
Rep Rate	8
Gun HV	10 (Knob Setting)
Gun Grid Voltage	10 (Knob Setting)
RF frequency	2856.320 MHz
Modulator HV Power Supply	10 (Knob Setting)
RF macro Pulse Length (FWHM)	300 ns
Q1 (A)	-3.7
Q2 (A)	-5.5
Q3 (A)	+0.6

Sweeping magnet and Positron mode test

W1	Sweeping magnet	D1 (A)	D2 (A)	Mode	Jaw width (cm)	q4 (A)	q5 (A)	q6 (A)	q7 (A)	q8 (A)	q9 (A)	q10 (A)	Counts	Time (s)	counts/second	Area of pulse (nVs)	conditions
in	out	4.2	4.2	e-	0.5	0	-4.0	+1.9	0	0	0	0					D1 & D2 tuned for 2 Mev electron.
in	out	-4.2	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0					D1 & D2 tuned for 2 Mev positron.
in	out	0	-4.2	photon	0.5	0	+4.0	-1.9	0	0	0	0
in	in	-4.2	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0					D1 & D2 tuned for 2 Mev positron.
in	in	0	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0
in	in	4.2	4.2	e-	0.5	0	-4.0	+1.9	0	0	0	0					D1 & D2 tuned for 2 Mev electron.
in	in	-4.2	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0
in	in	0	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0
in	out	0	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0					sweep magnet out
in	out	0	-4.2	e+	0.5	0	+4.0	-1.9	0	0	0	0					sweep magnet out
in	out	0	0	e+	0.5	0	0	0	0	0	0	0					sweep magnet out

W1	Sweeping magnet	D1 (A)	D2 (A)	Mode	Jaw width (cm)	q4 (A)	q5 (A)	q6 (A)	q7 (A)	q8 (A)	q9 (A)	q10 (A)	Counts	Time (s)	counts/second	Area of pulse (nVs)	conditions
in	out	0	0		0.5	0	0	0	0	0	0	0	600	381.8	1.57	3.8	Background test after new shielding
in	out	4.2	0		0.5	0	0	0	0	0	0	0					D1 to bend 2 MeV e-