Difference between revisions of "Beam Test Jul 27 2012"
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| Line 70: | Line 70: | ||
| − | = Resume | + | = Resume positron production using 10 MeV eletrons= |
Insert Gun trigger into VME scaler | Insert Gun trigger into VME scaler | ||
Revision as of 14:10, 27 July 2012
Tune
| Energy Switch | Out (High En) |
| Solenoid 1 | 13.9 A |
| Solenoid 2 | 4.1 A |
| Gun Hor | -0 A |
| Gun Ver | +0.2 A |
| Output Hor | -0.3 A |
| Output Ver | -0 A |
| Rep Rate | 17 |
| Gun HV | 10 (Knob Setting) |
| Gun Grid Voltage | 10 (Knob Setting) |
| RF frequency | 2856.321 MHz |
| Modulator HV Power Supply | 4.19 (Knob Setting) |
| RF macro Pulse Length (FWHM) | 300 ns |
| Q1 (A) | -3 |
| Q2 (A) | +0.8 |
| Q3 (A) | +2 |
| Q4 (A) | 0 |
| Q5 (A) | 0 |
| Q6 (A) | 0 |
| Current at FC0 | 96 mA |
Beam Current Calibration of Scint Left
Determine if the Beam Left Scintillator is linear with beam current.
| run# | FC1 | Scint Left (Ch9) | Reprate | start | stop | Int Rate | comments |
| 3696 |  |
2335 | 17:30:08 | 17:31:39 ( s) | 11 events/s | first measurement at full current | |
| 3697 |  |
59 | 17:: | 17:: ( s) | events/s | cut the current in half | |
| 3698 |  |
17:: | 17:: ( s) | events/s | |||
| 3699 | 100 px | 17:: | 17:: ( s) | events/s |
1. T1 out, disable D1, send the beam to FC0, take scope image of the area.
2. T1 in, enable D1, bend the beam by 90 deg, take a run with 1000 events.
Energy calibration of Scint 1
With T1 ande T2 out, send 1,2,6, and 10 MeV electrons to Scintillator 1 located at the end of the 90 degree beam line
Resume positron production using 10 MeV eletrons
Insert Gun trigger into VME scaler