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playground:sputter
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playground:sputter [2010/07/30 10:03] 132.235.40.102 |
playground:sputter [2010/12/28 08:49] 132.235.40.80 |
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| ** Startup and Normal Operation (in control room) ** | ** Startup and Normal Operation (in control room) ** | ||
| - | - Turn on and set the Del main extractor supply to the desired voltage for the particular buncher setting. | + | - Turn on and set the **Del main extractor** supply to the desired voltage for the particular buncher setting. |
| - Slowly turn up the ionizer heater. The ionizer operates at 21 amperes. It should take about 2 minutes to reach 21 A from the standby value of 10 A. Keep in mind that the amperage will fall slightly as the ionizer gets warmer. Keep adjusting the current until the ionizer is stable at 21 A. | - Slowly turn up the ionizer heater. The ionizer operates at 21 amperes. It should take about 2 minutes to reach 21 A from the standby value of 10 A. Keep in mind that the amperage will fall slightly as the ionizer gets warmer. Keep adjusting the current until the ionizer is stable at 21 A. | ||
| - | - Turn up the Cs feed tube heater to 0.450 amperes. | + | - Turn up the Cs **feed tube** heater to 0.450 amperes. |
| - | - Set the cesium reservoir heater to 0.380. This should be enough to give ones of microamps beam for p and d. A setting of about 0.400 - 0.420 should produce tens of microamps. Cs vaporization starts at a temperature of ~80° Celsius. The maximum reservoir temperature should not exceed 100° Celsius. The reservoir current should not exceed 0.500 | + | - Set the cesium **reservoir** heater to 0.285. This should be enough to give ones of microamps beam for p and d. A setting of about 0.290 - 0.300 should produce tens of microamps. Cs vaporization starts at a temperature of ~80° Celsius. The maximum reservoir temperature should not exceed 130° Celsius. The reservoir current should not exceed 0.300 |
| - | - Set the Glassman extractor power supply to 12.5 KV. Check to be sure the current is less than about 5 milliamps and the "control milliampres" light is NOT lit. High current indicates that the source needs serviced. | + | - Set the Glassman **extractor** power supply to 12.5 KV. Check to be sure the current is less than about 5 milliamps and the "control milliampres" light is NOT lit. High current indicates that the source needs serviced. |
| - | - Set the Glassman target power supply to 6.5 kV. Check to be sure the current is less than about 5 milliamps and the "control milliampres" light is NOT lit. High current indicates that the source needs serviced. | + | - Set the Glassman **target** power supply to 6.5 kV. Check to be sure the current is less than about 5 milliamps and the "control milliampres" light is NOT lit. High current indicates that the source needs serviced. |
| - Tune the beam with the inflection magnet, source lens (usually about 1.5 kV), lens A, and 2Y steerer. | - Tune the beam with the inflection magnet, source lens (usually about 1.5 kV), lens A, and 2Y steerer. | ||
| - Monitor the target and extractor currents: target current should be around 2.5 milliamps, and no more than 5 mA. | - Monitor the target and extractor currents: target current should be around 2.5 milliamps, and no more than 5 mA. | ||
playground/sputter.txt · Last modified: 2023/08/22 07:50 by carter
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