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playground:pulsing
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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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playground:pulsing [2009/04/15 14:40] odonnell Minor changes to gold foil section; moved numbering to wiki format |
playground:pulsing [2009/04/16 10:57] 132.235.40.233 |
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| === Accelerator Start-Up - Chopping and Bunching === | === Accelerator Start-Up - Chopping and Bunching === | ||
| + | |||
| + | Last modified 2009 April 15, 16:10 | ||
| ** Starting and Tuning Pulsed and Bunched Beam ** | ** Starting and Tuning Pulsed and Bunched Beam ** | ||
| Line 10: | Line 12: | ||
| - Adjust 2X for maximum current for the maximum current. You usually need to adjust both 2Y and 2X together to find the maximum. | - Adjust 2X for maximum current for the maximum current. You usually need to adjust both 2Y and 2X together to find the maximum. | ||
| - Change to f/2. Adjust the chopper phasing for maximum current. The beam current should drop by a factor of 2 if you are on the proper peak. For best current tune both the 2X and chopper phasing. | - Change to f/2. Adjust the chopper phasing for maximum current. The beam current should drop by a factor of 2 if you are on the proper peak. For best current tune both the 2X and chopper phasing. | ||
| - | - Adjust chopper phase for maximum current on the Output Meter. | + | - Return to f/1 |
| + | - Adjust chopper phase for maximum beam current. | ||
| - Turn "chopper power" on. | - Turn "chopper power" on. | ||
| - Turn buncher on. | - Turn buncher on. | ||
| - Bring amplifier plate to 1 keV for for deuteron or protons, 0.2-0.4 keV for He-3 and He-4, and 0.5-0.75 keV for Li-7. | - Bring amplifier plate to 1 keV for for deuteron or protons, 0.2-0.4 keV for He-3 and He-4, and 0.5-0.75 keV for Li-7. | ||
| - Adjust buncher phase for maximum current. | - Adjust buncher phase for maximum current. | ||
| - | - Peak buncher output current with "buncher output" by cranking the tuning knob. | + | - Adjust buncher tuning for peak output current by cranking the tuning knob. |
| - Get high energy end of the accelerator going. | - Get high energy end of the accelerator going. | ||
| - Adjust low energy steerers to maximize the beam. Try to run the steerers as low as possible and avoid doglegs. | - Adjust low energy steerers to maximize the beam. Try to run the steerers as low as possible and avoid doglegs. | ||
playground/pulsing.txt · Last modified: 2023/01/27 07:11 by carter
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