Beam Test Jul 18 2012

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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

Hrrl pos 17jul2012 Tune-up Gun Grid Volate knob 10 beamimage 1.png


Hrrl pos 17jul2012 Tune-up Gun Grid Volate knob 10 beamimage 2.png

Hrrl pos 17jul2012 Tune-up Gun Grid Volate knob 10 scope.png


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  Coil     En    
  Current (Amps)   (MeV)     
  5.8000           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 5.8 5.8 e- 0.5 0 0 0 0 0 0 0 2059 319.6 6.44 3.4 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.5 -2 0 0 0 0 0 0 2957 439.9 6.7 2.9 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.5 -4 0 0 0 0 0 0 4745 420.2 11.29 2.3 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.5 -6 0 0 0 0 0 0 9104 450.1 20.2 0.9 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.5 -6 1 0 0 0 0 0 5884 202.2 29.1 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 0 0 0 0 1459 200.1 7.29 3.18 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1.5 0 0 0 0 0 486 79.7 6.1 3.27 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 0.5 0 0 0 0 0 305 50.3 6.06 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 1 0 0 0 3872 422.9 9.16 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 0 0 0 0 490 79.9 6.13 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 -1 0 0 0 471 70 6.73 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 0 0 0 0 541 120 4.51 D1&D2 tuned for 3 Mev e-
in out 5.8 5.8 e- 0.2 -6 1 0 1 0 0 0 D1&D2 tuned for 3 Mev e-

I forgot to plug in the scintilator in, it was out all the time.


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 0 0 0 0 0 0 856 100.1 8.55 D1 & D2 set to 2 MeV e- for 90 deg
in out 0 4.2 0.5 0 0 0 0 0 0 0 7.13 100 7.13 no bending
in out 4.2 4.2 bg 0.5 0 0 0 0 0 0 0 136 80.1 1.7 RF on, Gun off
in out 4.2 4.2 bg 0.5 0 0 0 0 0 0 0 120 70 1.7 Clystron HV on, RF off, Gun off
in out 4.2 4.2 e- 0.5 -4.0 +1.9 0 0 0 0 0 818 99.9 8.19 D1 & D2 set to 2 MeV e- for 90 deg

Gun current was lowered: Gun Grid Voltage know set to 6.42. Hrrl pos 17jul2012 Tune-up Gun Grid Voltage knob 6p42 scope.png

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 -4.0 +1.9 0 0 0 0 0 518 139.9 3.7 D1 & D2 set to 2 MeV e- for 90 deg
in out 4.2 4.2 e- 0.5 0 -4 0 0 0 0 0 195 49.9 3.91 D1 & D2 set to 2 MeV e- for 90 deg
in out 4.2 4.2 e- 0.5 0 -3 0 0 0 0 0 573 177.2 4.88 3.0 D1 & D2 set to 2 MeV e- for 90 deg
in out -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 815 240 3.40 3.0 D1 & D2 set to 2 MeV e+ for 90 deg
in out 0 -4.2 bg 0.5 0 +3 0 0 0 0 0 826 250 3.3 no bending of beam.


Gun current was maximized for more positrons: Gun Grid Voltage know set to 10.

W1 Sweeping magnet Gun Grid Voltage know 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 6.42 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 815 240 3.40 3.0 D1 & D2 set to 2 MeV e+ for 90 deg
in in 6.42 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 754 350.2 2.15 3.0 D1 & D2 set to 2 MeV e+ for 90 deg
in out 6.42 0 -4.2 bg 0.5 0 +3 0 0 0 0 0 826 250 3.3 no bending of beam.
in out 10 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 1136 160.2 7.09 D1 & D2 set to 2 MeV e+ for 90 deg
in in 10 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 254 69.9 3.63 2.6 D1 & D2 set to 2 MeV e+ for 90 deg
in out 10 0 -4.2 bg 0.5 0 +3 0 0 0 0 0 1108 149.8 7.39 2.2 no bending of beam.
in out 8 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 900 140.1 6.42 1.9 D1 & D2 set to 2 MeV e+ for 90 deg
in in 8 -4.2 -4.2 e+ 0.5 0 +3 0 0 0 0 0 864 270.2 3.20 2.95 D1 & D2 set to 2 MeV e+ for 90 deg
in out 8 0 -4.2 bg 0.5 0 +3 0 0 0 0 0 1024 164.8 6.21 2.3 no bending of beam.
in in 8 0 -4.2 bg 0.5 0 +3 0 0 0 0 0 462 150 3.08 2.85 no bending of beam.


Position of the FC

Power off is in: When the power removed from the actuator, the aluminium brick will be in the beamline direction.

Optimization with Scintilator

Optimize quads to 1, 2, and 3 MeV electrons

Accelerator was tuned for 5.8 MeV.


D1 (A) D2 (A) Mode Jaw width q4 (A) q5 (A) q6 (A) q7 (A) q8 (A) q9 (A) q10 (A) pulse) conditions
-2.6 -2.6 1 MeV e- 1.0 cm +1.5 +2.7 -2.5 0 +0.5 0 + 0.3 Hrrl pos 18Jul2012 1MeV 90deg Sint scope.png D1&D1 to bend 1 MeV electrons 90 deg.
-4.2 -4.2 2 MeV e- 1.0 cm +1.1 +3.3 -2.4 0 +0.2 0 +0.2 Hrrl pos 18Jul2012 2MeV 90deg Sint scope.png D1&D1 to bend 2 MeV electrons 90 deg.
-5.8 -5.8 3 MeV e- 1.0 cm +1.5 +3.7 -2.4 -1.7 +0.4 0 0 Hrrl pos 18Jul2012 3MeV 90deg Sint scope.png D1&D1 to bend 3 MeV electrons 90 deg.
-5.8 -5.8 3 MeV e- 0.2 cm +1.5 +3.7 -2.4 -1.7 +0.4 0 0 Hrrl pos 18Jul2012 3MeV 90deg Sint scope Jaw at 2mm.png D1&D1 to bend 3 MeV electrons 90 deg.
-5.8 -5.8 3 MeV e- 0.5 cm +1.5 +3.7 -2.4 -1.7 +0.4 0 0 Hrrl pos 18Jul2012 3MeV 90deg Sint scope Jaw at 5mm.png D1&D1 to bend 3 MeV electrons 90 deg.
-5.8 -5.8 3 MeV e- 0.8 cm +1.5 +3.7 -2.4 -1.7 +0.4 0 0 Hrrl pos 18Jul2012 3MeV 90deg Sint scope Jaw at 8mm.png D1&D1 to bend 3 MeV electrons 90 deg.
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