installation_fp_sci
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installation_fp_sci [2017/03/06 12:32] pereira [Closing focal-plane chamber] |
installation_fp_sci [2017/06/13 12:05] pereira [Closing focal-plane chamber] |
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| * When the chamber is almost close, turn the know to close the clamps | * When the chamber is almost close, turn the know to close the clamps | ||
| * 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 | ||
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| + | ==== Pumping focal-plane chamber ==== | ||
| * In order to pumpdown the chamber, make sure that the manual vent valve is closed. Start manual pump to get a pressure below 50 mtorr {{: | * In order to pumpdown the chamber, make sure that the manual vent valve is closed. Start manual pump to get a pressure below 50 mtorr {{: | ||
| * Close the manual pump; open PanelMate **S800vac** and go to page 07. Select window **PUMPDOWN STATUS** and click on button **START PUMPDOWN**. The **PUMPDOWN STATUS** and **VENT STATUS** windows should display " | * Close the manual pump; open PanelMate **S800vac** and go to page 07. Select window **PUMPDOWN STATUS** and click on button **START PUMPDOWN**. The **PUMPDOWN STATUS** and **VENT STATUS** windows should display " | ||
| * Wait for some hours until vacuum is good | * Wait for some hours until vacuum is good | ||
installation_fp_sci.txt ยท Last modified: 2023/08/18 10:19 by noji
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