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installation_fp_sci [2017/06/20 15:31] pereira [Vent focal-plane chamber] |
installation_fp_sci [2017/06/20 17:14] pereira [Closing focal-plane chamber] |
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===== Closing focal-plane chamber ===== | ===== Closing focal-plane chamber ===== | ||
* Turn the switch to move the chamber to position " | * Turn the switch to move the chamber to position " | ||
- | * When the chamber is almost | + | * Check the display indicating the weight lift by the hydraulic system. |
+ | * Turn the knob to close the clamps | ||
+ | * Inspect the clamps and chamber flange (no gaps) to ensure that the chamber is properly sealed | ||
* Before pumping the chamber down, make sure that the scintillator is properly connected. This can be done by biasing the detector and checking the signals, either from the scalers or with a scope. One should clearly see cosmic rays; if that is not the case, the phototubes are likely miss connected | * Before pumping the chamber down, make sure that the scintillator is properly connected. This can be done by biasing the detector and checking the signals, either from the scalers or with a scope. One should clearly see cosmic rays; if that is not the case, the phototubes are likely miss connected | ||