Beam Text May 17 2012
Preparation
0. MATLAB emittance analysis: (working?) -- yes
1. Magnets: --Working
2. Camera: (a)--Working, (b)--shielding-good,(c) Sync? -- good
3. Flags: --Working
4. Farady Cup: hocked up? --yes
5. Blank off for camera on? --good
6. Gas bottle for valve full? --Yes
7. Gas bottle for flags full? --Yes
8. 3 Pickup Coils (Green Torroids): (1)@gun: hocked-up; (2)@accelerator exit: hocked-up to 2 red strip wire. Now connected to linac monitor panel which labeled as "J12 from back", "Scan field Mon" from front. (3)@end of beamline:
Check List Before Start
1) Valve exit of cavity opened?
2) Faraday cups are hocked up?
3) Camera in?
Energy Scan at 15.6 MeV
1. Tuning
| Energy Switch | Out (High En Range) |
| Dipole Coil Current | 33 |
| e- Beam Energy () | 15.6004336 MeV (mapping ) |
| Solenoid 1 | A |
| Solenoid 2 | A |
| Gun Hor | 0 A |
| Gun Ver | 0 A |
| Output Hor | 0.4 A |
| Output Ver | 0.3 A |
| Rep Rate | 6 |
| Gun HV | 8.99(Knob Setting) |
| Gun Grid Voltage | 10 (Knob Setting) |
| RF frequency | 2856.291 MHz |
| Modulator HV Power Supply | 4.84 (Knob Setting) |
| RF macro Pulse Length (FWHM) | 300 ns |
| Q1 (A) | 0 |
| Q2 (A) | 0 |
| Q3 (A) | 0 |
| Q4 (A) | 0 |
| Q5 (A) | 0 |
| Q6 (A) | 0 |
| Peak Current on FC 1 (45 deg) | 88.8 mAmps |
| Peak Current on FC 2 (45 deg) | 26.4 mAmps |
| Scope on FC 1 | 200 px |
| Scope on FC 2 | 200 px |
| Beam Spot | 200 px |
Scanning
En Scan at 15.6004336 MeV. Q1 is on, All other quads are off. 88.8 mAmp Peak Current.
1) Scan from -10 Amps to 10 Amps
2) Increment at 0.4 Amps.
3) Name images by numbers start from 1. Then go on.
Like: -10 Amp is 1, -9.6 Amp is 2, and so on til 10 Amp is named 51.
4) Scan multipole (10) times from -10 to 10 Amps, and put them in different folders.
5) For each time, take back ground images. It should be done when RF is on and gun is off.
6) After the scan take a scope image for the current of the FC after the OTR screen.