Beam Test Jul 27 2012

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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 R3696 FC1.png 2335 17:30:08 17:31:39 ( s) 11 events/s first measurement at full current
3697 R3697 FC1.png 59 17:: 17:: ( s) events/s cut the current in half
3698 R3698 FC1.png 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 poitron production using 10 MeV eletrons

Insert Gun trigger into VME scaler

Set D2 for 2 MeV

Set D2 for 1 MeV

Set D2 for 3 MeV

Look for positrons using 6 MeV electrons