Beam Test Jul 17 2012

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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.
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