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gas_handling_system [2013/12/13 20:58] pereira created |
gas_handling_system [2013/12/13 21:05] pereira |
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* A log file should be specified before operating the gas handling system | * A log file should be specified before operating the gas handling system | ||
* A window automatically pops up asking for the name of the log file when the program starts | * A window automatically pops up asking for the name of the log file when the program starts | ||
- | * Use the number of the current experiment (or “test”) as the name of the log file and save in file | + | * Use the number of the current experiment (or “test”) as the name of the log file and save in file / |
- | // | + | |
* The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware | * The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware | ||
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- | Preparation of Gas bottles | + | ===== Preparation of Gas bottles |
+ | |||
+ | * In Data-U6 | ||
+ | * Ensure I265GV is closed to isolate focal plane vacuum chamber from the rest of the beamline | ||
+ | * Confirm that the focal plane chamber is under vacuum | ||
+ | * Confirm that the only open gas handling system valves are 4, 5, 6, 20, 21, and 22 | ||
+ | |||
+ | * In the S3 vault | ||
+ | * Ensure that the gas handling system roughing pump is running and has a good vacuum | ||
+ | * The pump sits on the floor under the focal plane behind the south support post | ||
+ | * The display unit for the pressure at the pump has a needle indicator and is mounted under the focal plane on the south support post | ||
+ | * Ensure that the main valves on the gas bottles are open | ||
+ | * Ensure that the gas bottles are not empty | ||
+ | * The gas regulators are not normally adjusted. | ||
+ | * The bottle supplying the P-10 gas for the ion chamber is secured to the cross-brace of the south support for the focal plane chamber. | ||
+ | * The bottle supplying CF4 (tetrafluoromethane) gas for the CRDCs is secured to the cross-brace of the south support for the focal plane chamber. | ||
+ | * The bottle supplying isobutane (C4H10) for the CRDCs is secured to the south support post for the focal plane chamber. | ||
- | In Data-U6 | ||
- | Ensure I265GV is closed to isolate focal plane vacuum chamber from the rest of the beamline | ||
- | Confirm that the focal plane chamber is under vacuum | ||
- | Confirm that the only open gas handling system valves are 4, 5, 6, 20, 21, and 22 | ||
- | In the S3 vault | ||
- | Ensure that the gas handling system roughing pump is running and has a good vacuum | ||
- | The pump sits on the floor under the focal plane behind the south support post (PICTURE GOES HERE) | ||
- | The display unit for the pressure at the pump has a needle indicator and is mounted under the focal plane on the south support post (PICTURE GOES HERE) | ||
- | Ensure that the main valves on the gas bottles are open | ||
- | Ensure that the gas bottles are not empty | ||
- | The gas regulators are not normally adjusted. | ||
- | The bottle supplying the P-10 gas for the ion chamber is secured to the cross-brace of the south support for the focal plane chamber. | ||
- | The bottle supplying CF4 (tetrafluoromethane) gas for the CRDCs is secured to the cross-brace of the south support for the focal plane chamber. | ||
- | The bottle supplying isobutane (C4H10) for the CRDCs is secured to the south support post for the focal plane chamber. | ||
Filling Ion Chamber with Gas | Filling Ion Chamber with Gas |