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installation_fp_sci [2023/05/11 13:15] pereira |
installation_fp_sci [2023/06/15 08:26] noji [Emptying FP Gaseous Detectors] |
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===== Emptying FP Gaseous Detectors ===== | ===== Emptying FP Gaseous Detectors ===== | ||
+ | - Turn off the ion gauge of RBT_BTS34 D2686 Pumping Station if it is still on. | ||
- Check that the system is in **RUN** mode on the “FP_State_Buttons” page under FRIB EXP Main → S800 → GHS Pages (Secondary Pages) | - Check that the system is in **RUN** mode on the “FP_State_Buttons” page under FRIB EXP Main → S800 → GHS Pages (Secondary Pages) | ||
- Return to “GHS_FP_Main” click **Enable MFC Controls** | - Return to “GHS_FP_Main” click **Enable MFC Controls** | ||
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* The figure below shows the FP chamber open, with the " | * The figure below shows the FP chamber open, with the " | ||
* Unplug the bases of the up and down phototubes. The platic tie holding the cable of the up phototube to the chamber needs to be cut {{: | * Unplug the bases of the up and down phototubes. The platic tie holding the cable of the up phototube to the chamber needs to be cut {{: | ||
- | * Using an allen wrench, unscrew the two bolts attaching the scintillator frame to the base of the chamber {{: | + | * Using an allen wrench, unscrew the two bolts attaching the scintillator frame to the base of the chamber {{: |
- | * Climb to the chamber and pull the scintillator frame up. Once unplugged, handle it to a second person {{: | + | * Climb to the chamber and pull the scintillator frame up. Once unplugged, handle it to a second person {{: |
- | * With the help of a second person, hold the new scintillator by its frame and place it in the right spot. A second person should be ready to screw the frame to the base of the chamber | + | * With the help of a second person, hold the new scintillator by its frame and place it in the right spot. A second person should be ready to screw the frame to the base of the chamber. |
- | * Connect the bases of the up and down phototubes. The later is quite difficult because one cannot see the pins | + | * Connect the bases of the up and down phototubes. The latter |
* Using a plastic tie, attach the cable of the up phototube to the scintillator frame | * Using a plastic tie, attach the cable of the up phototube to the scintillator frame | ||