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venting_pumping_intermediate_image_box [2018/12/19 11:07] pereira [Venting/pumping Intermediate Image box and filling PPACs with gas] |
venting_pumping_intermediate_image_box [2018/12/19 11:22] pereira [Filling Intermediate-image delay PPAC] |
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* At the end of the procedure, close the manual roughing pump valve | * At the end of the procedure, close the manual roughing pump valve | ||
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+ | ===== Filling Intermediate-image delay PPAC ===== | ||
+ | Requirements: | ||
+ | |||
+ | * Verify that PPACs are not biased: | ||
+ | * Check that the detectors are unbiased by opening the [[HV bias|HV GUI]] | ||
+ | * Notify the system of the bias-off state by selecting the " | ||
+ | * Verify that PPACs are in automatic mode with gas removed (**S3_Gas_Handling**) | ||
+ | * The "GH System Status box should read "Auto Mode Gas Removed" | ||
+ | * If gas is removed but the system is not in the automatic mode, consult the Beam Physicists or Device Physicist. This typically requires to verify that the system is in a controlled status. In particular, the " | ||
+ | * Confirm that PanelMate box " | ||
+ | * PanelMate box "Gas Flow Control" | ||
+ | * | ||
+ | * | ||
+ | * Open **S800Vac** and go to page 03 (" | ||
+ | * Isolate chamber by closing gate valves **I212GV** and **I215GV** | ||
+ | * [[Vacuum control|Turn off]] ion gauge **I213IG** | ||
+ | * Check box " |