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installation_fp_sci [2017/03/06 12:30] pereira [Open focal-plane chamber] |
installation_fp_sci [2017/03/06 12:31] pereira [Installing FP scintillator] |
==== Installing FP scintillator ==== | ==== Installing FP scintillator ==== |
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- The figure below shows the FP chamber open, with the "old" FP scintillator to be replaced by the new one {{:wiki:E1-view.jpg?350|FP chamber opened}} | * The figure below shows the FP chamber open, with the "old" FP scintillator to be replaced by the new one {{:wiki:E1-view.jpg?350|FP chamber opened}} |
- 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 {{:wiki:e1-up-Daniel.jpg?400|UP base phototube}} {{:wiki:e1-down-closeup.jpg?250|DOWN base phototube}} | * 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 {{:wiki:e1-up-Daniel.jpg?400|UP base phototube}} {{:wiki:e1-down-closeup.jpg?250|DOWN base phototube}} |
- Using an allen wrench, unscrew the two bolts attaching the scintillator frame to the base of the chamber {{:wiki:e1-frame-bolts.jpg?350|Scintillator frame}} | * Using an allen wrench, unscrew the two bolts attaching the scintillator frame to the base of the chamber {{:wiki:e1-frame-bolts.jpg?350|Scintillator frame}} |
- Climb to the chamber and pull the scintillator frame up. Once unplugged, handle it to a second person {{:wiki:Daniel-Jorge-1.jpg?350|FP chamber opened}} {{:wiki:Daniel-Jorge-2.jpg?350|FP chamber opened}} | * Climb to the chamber and pull the scintillator frame up. Once unplugged, handle it to a second person {{:wiki:Daniel-Jorge-1.jpg?350|FP chamber opened}} {{:wiki:Daniel-Jorge-2.jpg?350|FP chamber opened}} |
- 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 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 | * Using a plastic tie, attach the cable of the up phototube to the scintillator frame |
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