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

2 MeV

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	341	190.2	1.79	4.1	D1 to bend 2 MeV e- 45 deg
in	out	4.2	4.2	e-	0.5	0	0	0	0	0	0	0	452	220	2.05	4.5	D1 & D2 set to 2 MeV e- for 90 deg
in	out	4.2	4.2	RF on, Gun off	0.5	0	0	0	0	0	0	0	547	340.1	1.61		Background test. We still sending RF to cavity, but electron gun is off. So, no electron is delivered.
in	out	4.2	4.2	Clystron HV on, No RF, Gun off	0.5	0	0	0	0	0	0	0	577	380.1	1.52		Background test. We are not sending RF to cavity, electron gun is off.
in	out	4.2	4.2	whole machine off	0.5	0	0	0	0	0	0	0					Background test.
in	out	4.2	4.2	e-	0.5	0	0	0	0	0	0	0	425	209.8	2.03	3.7	D1 & D2 set to 2 MeV e- for 90 deg
in	out	4.2	4.2	e-	0.5	0	-4.0	+1.9	0	0	0	0	636	349.8	1.82	4.1	D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	e-	0.5	+1	-4.7	+2	0	0	0	0	646	330.2	1.96	1.02	D1 & D2 tuned for 2 Mev electron.

3 MeV

  Dipole   En Predictions of 
  Coil     Matrix    MATLAB
  Current  Inversion Polyfit
  (Amps)   (MeV)     (MeV)
  5.8000    3.0049    3.0049

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

0

0

0

0

0

0

D1&D2 tuned for 2 Mev e-