1. Injector Studies Using Superlattice Photocathode
R. Suleiman, 13 Jan 2005
1. Running Conditions
2. PZT Scan
3. IA Scan
RHWP Scan
PITA Scan

2. Running Conditions 10 Jan 2005
Superlattice photocathode in gun3
Hall C at 4-pass, E=4625 MeV. HWP IN.
Beam current 60 uA. Transmission ~ 0.93

3. PZT x-Scan

4. PZT y-Scan

5. QE plot done that morning Beam was at 700,730 Spot diameter 5mm
PZT x SLOPES:
x-diff slopes (um/V) y-diff slopes (um/V) 1I 1I
0I02A 0L 0L 0L 0R
C20A H
H00A
H00B
BCM 0L02: ppm/V
BCM 1 (Hall C): 3620 ppm/V
PZT y SLOPES:
x-diff slopes (um/V) y-diff slopes (um/V) 1I 1I
0I02A 0L 0L 0L 0R
C20A H
H00A
H00B
BCM 0L02: -961 ppm/V
BCM 1 (Hall C): 948 ppm/V
QE plot done that morning
Beam was at 700,730
Spot diameter 5mm
PZT x moves laser on cathode by 7um/V
PZT x Scan showed a 41% /mm change in QE

6. IA Scan
BCM 0L02: -127 ppm/V
BCM 1 (Hall C): 124 ppm/V

7. RHWP Scan

8. PITA Scan BCM 0L02: 187 ppm/V BCM 1 (Hall C): -140 ppm/V
This is setting voltage. 1 setting
Volt corresponds to 60 V
on the Pockel Cell on top of 2.7 kV