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playground:alphatross
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| ==== NEC Alphatross RF Source Instructions ==== | ==== NEC Alphatross RF Source Instructions ==== | ||
| - | ** Duoplasmatron Instructions ** | + | THESE ARE DRAFT INSTRUCTIONS WRITTEN REMOTELY. THERE MAY BE OMISSIONS AND INCORRECT NOMENCLATURE, USE YOUR OWN JUDGEMENT... |
| - | **Please study the diagram below.** | + | ** In the Vault ** |
| - | {{playground:duo.jpg|}} | + | - LE Extension vacuum must be good as evidenced by Ion Gauge controller with orange displays on magnet. |
| - | + | - Source vacuum must be good as evidenced by Ion Gauge controller with blue displays in 19" rack. | |
| - | + | - Unground alpha source and hang shepherd's hook on concrete wall conduits, close gate. | |
| - | + | - Go around and unground sputter source, hang shepherd's hook on gate, and close gate. | |
| - | These instructions were developed by David Ingram, please e-mail any comments or questions about them to him, at ingram@ohio.edu. | + | |
| - | + | ||
| - | This page includes: Duoplasmatron cold start, warm start, start from standby; shutdown completely, shutdown for warm start, shutdown to standby; Trouble shooting; 3He operation. | + | |
| - | + | ||
| - | + | ||
| - | ** Duoplasmatron Start-up ** | + | |
| - | + | ||
| - | You need to determine what the state of the source is before you do anything. Depending on the electrical and vacuum status the source will be starting from cold, warm, or standby. | + | |
| - | + | ||
| - | The first check you need to make is on the vacuum status of the source. The source pressure should be less than 5x10<sup>-6</sup> torr. If it is not find out why before going any further. | + | |
| - | + | ||
| - | If the control power for the machine, and/or for the source are off, or if the sodium canal supply is off or at zero current, you are starting from the cold state. | + | |
| - | + | ||
| - | If the power to the source console is on and the sodium canal heater current is ~0.3 A and a beam has been successfully extracted previously, then the source is starting already warm. | + | |
| - | + | ||
| - | If the power to the source console is on and the sodium canal heater current is ~0.55 A and there is ~0.75 A of arc and the extraction and canal supplies are on, then the source is in standby. | + | |
| - | + | ||
| - | If the source is in any other state please ask before proceeding. | + | |
| - | + | ||
| - | ** Starting warm ** | + | |
| - | + | ||
| - | This applies when the source already been run successfully and the Sodium heater current left at ~0.3 A, and is the usual state from which to start the source. | + | |
| - | At the Control Console: | + | |
| - | + | ||
| - | 1. Check the source vacuum is less than 5x10<sup>-6</sup> torr. | + | |
| - | + | ||
| - | In the Vault: | + | |
| + | ** In the Control Room ** | ||
| + | - Source camera must have a view of the faraday screen on the blue box of the source head. | ||
| + | - To gain control of the source camera: On the joystick unit press "2" then "CAM" to specify the camera. | ||
| + | - Use the joystick and "TELE" or "WIDE" to create a view of interest. | ||
| + | - If not already present, launch the Alphatross software on the source computer. | ||
playground/alphatross.txt · Last modified: 2022/06/08 09:05 by leblanc
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