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playground:pulsing [2009/07/30 12:47] 132.235.40.233 |
playground:pulsing [2010/11/10 06:16] 75.105.208.104 |
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- 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 kV for for deuteron or protons, 0.2-0.4 kV for He-3 and He-4, and 0.5-0.75 kV for Li-7. |
- Adjust buncher phase for maximum current. | - Adjust buncher phase for maximum current. | ||
- Adjust buncher tuning for peak output current by cranking the tuning knob. | - Adjust buncher tuning for peak output current by cranking the tuning knob. | ||
Line 26: | Line 26: | ||
- Adjust H.E. steering, quads, tweaking magnet, etc. to maximize beam current. | - Adjust H.E. steering, quads, tweaking magnet, etc. to maximize beam current. | ||
- Adjust auxiliary width for beam current; this will affect both beam current and timing and will need to be set when the final timing is set. | - Adjust auxiliary width for beam current; this will affect both beam current and timing and will need to be set when the final timing is set. | ||
- | - Examine beam pick-off repetition rate; if you have adjusted the chopper and buncher properly it should read 500,000 at f/1. | + | - Examine beam pick-off repetition rate; if you have adjusted the chopper and buncher properly it should read 5,000,000 at f/1. |
- If you are using a gold foil: | - If you are using a gold foil: | ||
- put the cup in, then | - put the cup in, then |