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venting_pumping_object_box [2023/11/17 11:23] swartzj |
venting_pumping_object_box [2024/02/06 10:40] (current) noji |
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====== Venting/ | ====== Venting/ | ||
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+ | In CS-Studio/ | ||
+ | |||
+ | {{: | ||
===== Vent Object chamber ===== | ===== Vent Object chamber ===== | ||
- | From the S800 Main Vacuum page, go to the Object chamber page, opening the page shown in the figure below, and make sure of the following: | + | The vent valve and the roughing valve RV should be closed when you begin. |
- | * Before you start, make sure that the gate valves named D2341 BGV and D2303 BGV are closed and that the IG is off. | + | |
- | * The vent valve should | + | |
- | * The valve to the turbo pump TVG should be closed. If the chamber will be vented for a long time, Valve FV should also be closed and the turbo pump should be switched off . | + | |
- | The procedure is then as follows: | + | The venting |
- | - Close the valve to the roughing | + | - Notify the Control Room and inform them that they can disregard the EXP alarm that will occur |
- | - Now you can plot the pressure | + | - Make sure that the detectors inside the chamber have been unbiased |
- | - **Keep a constant eye on the pressure | + | - Close the beamline gate valves D2341 BGV and D2303 BGV |
- | - You can now enter and open the chamber. | + | - Turn off the IG |
+ | - Close the turbo pump gate valve TVG. If the chamber will be vented for a long time, the turbo pump should be switched off | ||
+ | - Monitor | ||
+ | - Open the vent valve | ||
+ | - When the pressure approaches | ||
===== Pumping Object chamber ===== | ===== Pumping Object chamber ===== | ||
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* After turning on the turbo pump, wait for the inner circle of the pump symbol to turn green and the pump to reach 40 000 rpm before you open the valve at TGV. | * After turning on the turbo pump, wait for the inner circle of the pump symbol to turn green and the pump to reach 40 000 rpm before you open the valve at TGV. | ||
* When the pressure decreases to below 10-3 Torr, you should see the pressure bottom out on your BPG plot, you can turn on the IG and also plot its pressure over time. Section D2337 should turn green and the vacuum status should turn to 'Good vacuum' | * When the pressure decreases to below 10-3 Torr, you should see the pressure bottom out on your BPG plot, you can turn on the IG and also plot its pressure over time. Section D2337 should turn green and the vacuum status should turn to 'Good vacuum' | ||
- | {{ : | + | |