Beam Test Jul 17 2012

Tune

Used tune from yesterday.

Energy Switch	Out (High En)
Solenoid 1	6.9 A
Solenoid 2	1.3 A
Gun Hor	0 A
Gun Ver	+0.2 A
Output Hor	+1.2 A
Output Ver	0 A
Rep Rate	8
Gun HV	10 (Knob Setting)
Gun Grid Voltage	6.42 (Knob Setting)
RF frequency	2856.320 MHz
Modulator HV Power Supply	4.28 (Knob Setting)
RF macro Pulse Length (FWHM)	300 ns
Q1 (A)	-10
Q2 (A)	-10
Q3 (A)	0

3 MeV tests

Electron beam tune is same as yesterday, tuned for 11.5 region.

Start from where I left from yesterday. Repeat the last measurement from yesterday, so I can reproduce yesterday's condition, and start from there. Yesterday, the sweeping magnet added to the end of the 3rd triplet magnets to sweep the beam.

The Gun grid voltage was set back to 6.42 (knob Setting), similar as the last run on yesterday.

  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	conditions
in	out	0	0	photon	0.2	- 2	+2	0	0	0	-0.6	- 0.4	1163	305.7	3.80	Beam tuned to 0 deg
in	out	0	-5.8	positron	0.2	- 2	+2	0	0	0	-0.6	- 0.4	1401	378.5	3.70	Beam tuned to 0 deg
in	out	-5.8	-5.8	positron	0.2	- 2	+2	0	0	0	-0.6	- 0.4	1362	349.6	3.90
in	out	0	0		0.2	- 2	+2	0	0	0	-0.6	- 0.4	1204	315.1	3.82
in	out	-5.8	5.8		0.2	- 2	+2	0	0	0	-0.6	- 0.4	1292	359.8	3.59
in	out	-5.8	5.8		0.2	- 2	+2	0	0	0	-0.6	- 0.4	566	150.1	3.77
in	out	5.8	5.8	electron	0.2	- 2	+2	0	0	0	-0.6	- 0.4	1417	220	6.44	D1 & D2 tuned for 3 Mev electron. Quads are still in positron mode setting.
in	out	5.8	5.8	electron	0.2	+ 2	-2	0	0	0	+0.6	+ 0.4	2467	219.8	11.22	D1 & D2 tuned for 3 Mev electron.
in	out	5.8	5.8	electron	0.2	+ 2	-2	0	0	0	+0.6	+ 0.4	4879	450.1	10.84	D1 & D2 tuned for 3 Mev electron.

2 MeV tests

Similar tune as above, except dipoles are tuned for 2 MeV electrons.

 Dipole   En Predictions of 
 Coil     Matrix    MATLAB
 Current  Inversion Polyfit
 (Amps)   (MeV)     (MeV)
  4.2000    2.0230    2.0230

The termination on the scope is 50 ohms.

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 in the scope	conditions
in	out	4.2	4.2	electron	0.2	+ 2	-2	0	0	0	+0.6	+ 0.4	1000	275.6	3.63		D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	0.2	0	0	0	0	0	0	0	701	186.8	3.75	8.3nVs	D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	0.2	+1	0	0	0	0	0	0	1103	313.3	3.52		D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	0.2	+2	0	0	0	0	0	0	2550	699.8	3.64		D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	0.2	-1	0	0	0	0	0	0	908	260.4	3.49	8.5nVs	D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	0.2	-2	0	0	0	0	0	0	715	200	3.58	8.2nVs	D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	2	0	0	0	0	0	0	0	700	138.3	5.06	6.7	D1 & D2 tuned for 2 Mev electron.

Narrowed the integration region on the scope.

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	electron	3.5	0	0	0	0	0	0	0	1003	177.5	5.65	2.5	D1 & D2 tuned for 2 Mev electron.
in	out	4.2	4.2	electron	3.5	0	-2	0	0	0	0	0	1003	177.5	5.65	2.5	D1 & D2 tuned for 2 Mev electron.