Goal of this procedure: Enter oven mode and reach desired oven profile
Instructions: To keep track of changes to the procedure - copy this page, date it, and add execution notes in red. Remember to save changes.
Table of Contents:
NOTE - WORK IN PROGRESS!
Procedure
Checkout and setup
| Procedure | Execution notes | |
|---|---|---|
| 1 | Record goal density and helium buffer pressure | |
2 | Set 10 Torr gauge set points to plus and minus 1 Torr of desired pressure
| |
| 3 | Set the 1000 Torr gauge setpoint to 20 Torr | |
4 | Confirm helium gas bottle is connected to fill line 1, regulator set to 5-10 psig | |
| 5 | If using DPS, confirm it is operating nominally. |
Procedure for oven turn on
| Procedure | Execution notes | |
|---|---|---|
| 1 | Verify vacuum conditions approximately 1e-6 Torr or better - Record pressure | |
2 | Zero the 10 and 1000 Torr gauges | |
| Purge fill line by running a small amount of He through the fill valve and then stopping and pumping out the IP - Record final pressure | ||
| 3 | Set EPS EXPERT Mode to be “ON” by turning the interlock key in the EPS box in Rack 20-27 in the gallery.
| |
| 4 | Unlock oven gate valves (switch to CAMAC mode) | |
| 5 | Open oven gate valves 3183 and 3187. (there might be a small amount of helium between the valves). Continue pump down to 1e-6 Torr - Record pressure | |
| 6 | Close angle valve VV3201 isolating the plasma beamline from the plasma turbo | |
| 7 | Check Beryllium window valve VV3208 is closed- close if not! | |
| 8 | Set up strip-tool of pressure in the plasma oven:
| |
| 9 | Fill IP with He to goal IP pressure. If using DPS then follow: How to perform a static fill with DPS | |
| Hit EPS Reset to clear the low pressure fault | ||
Set EPS EXPERT Mode to be “OFF” by turning the interlock key in the EPS box in Rack 20-27 in the gallery. (Note: EXPERT mode is “OFF” if the LED light is OFF and EXPERT mode is “ON” if the red light is ON) . | ||
| While at the racks, Turn valve control for the beryllium window valve to local only and remove key. Note: the EPICS controls for this valve are also password protected so this will be very well configuration controlled. | ||
| Back at the computer, perform an EPS reset (this is needed to enable the heater) | ||
Set up striptool of oven thermocouples plus the thermocouples on the bypass line, cooling water jackets, base-plate and air.
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