Beam Test Jul 12 2012

JAI Camera Triggering

The fall of the TTL pulse triggers the camera.

Camera trigger should arrive at lest 30 micro-second earlier than RF pulse to get the beam image on the OTR.

To do this the first RF pulse trigger should be delayed to trigger the camera for the next RF pulse.

Note

RF not would trigger the camera. We added a ground strap to the double shielded BNC cable and covered some unshielded cables with tin foil. This stopped the RF from triggering the camera.

tune 3 MeV electrons to the 90 degree line

tune to 0 degree line

Determine the magnet settings needed to optimize the current to FC1.

Take a picture of the beam spot on the YaG and FC1

Energy Switch	Out (High En Range)
Solenoid 1	7.8 A
Solenoid 2	3.9 A
Gun Hor	0.1 A
Gun Ver	0 A
Output Hor	0.3 A
Output Ver	0.3 A
Rep Rate	6
Gun HV	10 (Knob Setting)
Gun Grid Voltage	10(Knob Setting)
RF frequency	2856.268 MHz
Modulator HV Power Supply	3.66 (Knob Setting)
RF macro Pulse Length (FWHM)	200 ns
Q1 (A)	0
Q2 (A)	0
Q3 (A)	0
Q4 (A)	0
Q5 (A)	0
Q6 (A)	0

100 px

tune to 45 degree line

Optimize the current to FC2 using Quad 7 and the energy slits

Q7 did not help to increase beam current at FC45

document the settings and current oFC2

tune to 90 degree

Optimize current to FC3 using last 3 quads

Take scope picture

trasmission

Make several measurements using all three FCs to determine the transmission.

Do this by transporting beam to each several times.