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installation_fp_sci [2015/05/04 12:23] pereira [Open focal-plane chamber] |
installation_fp_sci [2015/05/04 12:55] pereira [Installation of FP scintillator] |
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- After venting the FP chamber, there might still be some pressure differencial. This can be corrected by " | - After venting the FP chamber, there might still be some pressure differencial. This can be corrected by " | ||
- Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{: | - Unlock the padlock protecting the power brakers of the switch controls to open the chamber, and press the **START** button {{: | ||
- | - Turn the switch to open the clamps holding the FP chamber {{: | + | - Turn the switch to open the clamps holding the FP chamber. The weight held by the hydraulic piston will increase |
+ | - Turn on the switch to activate the motor opening the chamber. It takes about 10 minutes to get the chamber totally opened {{: | ||
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+ | ==== Installation of FP scintillator ==== | ||
+ | - 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 {{: | ||
+ | - 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 {{: | ||
+ | - 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 | ||
+ | - Using a plastic tie, attach the cable of the up phototube to the scintillator frame | ||
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- | - The weight held by the pivot will increase {{: | ||
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+ | he first step to do is unplugging the up and down bases of the phototubes | ||
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+ | In order to remove the " | ||
Click Vent status [start pumpdown] --> vent status= pumpdown in progress (blue) | Click Vent status [start pumpdown] --> vent status= pumpdown in progress (blue) |