User Tools
playground:shutdown
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
|
playground:shutdown [2009/04/15 15:30] odonnell Change to wiki numbering format; added line about not letting the corona points go negative. |
playground:shutdown [2012/06/01 10:30] carter |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ==== Machine Shutdown ==== | + | ==== Accelerator Shutdown ==== |
| - | ** Machine Shutdown ** | + | 1. Switch OVERVOLTAGE PROTECTION to DISABLE. |
| - | - Log Machine settings, log radiation monitor tape if necessary. | + | 2. Switch the control mode to GVM. |
| - | - Switch stabilizer to "AUTO" | + | |
| - | - Put cup in -- when putting in L.E. cup at high terminal voltage be prepared to run belt charge down as terminal voltage will increase when the beam loading is removed. | + | 3. Slowly turn the CONTROL GAIN to zero while watching the grid voltage. If the grid voltage rises above 10 volts, reduce the CHARGING VOLTAGE to keep the grid voltage less than 10 volts, then continue reducing the CONTROL GAIN to zero. |
| - | - Switch stabilizer to "STANDBY". | + | |
| - | - Turn "GRIDDED VOLTAGE TUBE LENS" down. | + | 4. Turn the CHARGING VOLTAGE dial down to 0.10 |
| - | - Monitor corona current while changing belt charge; do not run in (extend) the corona points when the terminal charge may become negative (i.e. with the plastic belt). Reverse current will damage the stabilizer circuit. | + | |
| - | - Run belt charge down. | + | 5. Switch CHAIN MOTORS to OFF. |
| - | - Turn belt charge "OFF". | + | |
| - | - Turn drive motor "OFF". | + | 6. Switch POWER SUPPLIES to OFF. |
| - | - Start Source shut down (all control room operations). | + | |
| - | - Set steerers to zero and then to "OFF". | + | 7. Turn the TERMINAL VOLTAGE dial to zero. |
| - | - Run magnets and quadrupole lenses down (coarse to zero, fine to 500), then turn off (push the "power" button). | + | |
| - | - Turn the beam profile monitor (BPM) to "OFF" | + | |
| - | - Turn buncher and chopper power to "OFF". | + | |
| - | - Complete control room source shutdown and run low energy extension einzel lenses down. | + | |
| - | - //(Only for maintenance shutdown)// Switch stabilizer to "OFF". | + | |
| - | - //(Only for maintenance shutdown)// Turn key switch "OFF". | + | |
| - | - Complete source shut down in vault. | + | |
playground/shutdown.txt · Last modified: 2017/04/17 11:45 by jacobs
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 3.0 Unported
