This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
gas_handling_system [2013/12/14 16:10] pereira [General Information] |
gas_handling_system [2013/12/14 16:18] pereira [Removing Gas from Focal Plane Detectors] |
||
---|---|---|---|
Line 11: | Line 11: | ||
===== LabView Control Program ===== | ===== LabView Control Program ===== | ||
- | To start the gas handling system control application, | + | To start the gas handling system control application, |
* A log file should be specified before operating the gas handling system | * A log file should be specified before operating the gas handling system | ||
* A window automatically pops up asking for the name of the log file when the program starts | * A window automatically pops up asking for the name of the log file when the program starts | ||
- | * Use the number of the current experiment (or “test”) as the name of the log file and save in file / | + | * Use the number of the current experiment (or "test") as the name of the log file and save in file / |
* The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware | * The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware | ||
- | * Click the Valves tab at the top of the LabView window to display the overview of the gas handling system (see Figure below) | + | * Click the **Valves** tab at the top of the LabView window to display the overview of the gas handling system (see Figure below) |
* The triangles on the valve control buttons (as well as the square valve status indicators near the control buttons) are red to indicate that a valve is closed (e.g., control 25 for the CRDC return above) and green to indicate a valve is open (e.g., control 22 for the CRDC bypass above) | * The triangles on the valve control buttons (as well as the square valve status indicators near the control buttons) are red to indicate that a valve is closed (e.g., control 25 for the CRDC return above) and green to indicate a valve is open (e.g., control 22 for the CRDC bypass above) | ||
Line 31: | Line 31: | ||
==== In Data-U6 ==== | ==== In Data-U6 ==== | ||
- | * Ensure I265GV is closed to isolate focal plane vacuum chamber from the rest of the beamline | + | * Ensure |
* Confirm that the focal plane chamber is under vacuum | * Confirm that the focal plane chamber is under vacuum | ||
* Confirm that the only open gas handling system valves are **4, 5, 6, 20, 21, and 22** | * Confirm that the only open gas handling system valves are **4, 5, 6, 20, 21, and 22** | ||
Line 51: | Line 51: | ||
* Follow instructions under [[# | * Follow instructions under [[# | ||
- | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge) while detectors are being filled with gas; the pressure normally stays below 5E-5 Torr. | + | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge in PanelMate **S800vac.MT2 page 07**) while detectors are being filled with gas; the pressure normally stays below 5E-5 Torr. |
* Confirm that the detector pressure as indicated by the display labeled P.T. #1 reads below a couple of Torr | * Confirm that the detector pressure as indicated by the display labeled P.T. #1 reads below a couple of Torr | ||
Line 81: | Line 81: | ||
* Follow instructions under [[# | * Follow instructions under [[# | ||
- | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge) while detectors are being filled with gas; the pressure normally stays below 5E-5 Torr. | + | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge in PanelMate **S800vac.MT2 page 07**) while detectors are being filled with gas; the pressure normally stays below 5E-5 Torr. |
* Confirm that the detector pressure as indicated by the display labeled P.T. #2 reads below a couple of Torr | * Confirm that the detector pressure as indicated by the display labeled P.T. #2 reads below a couple of Torr | ||
Line 113: | Line 113: | ||
===== Removing Gas from Focal Plane Detectors ===== | ===== Removing Gas from Focal Plane Detectors ===== | ||
- | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge) while gas is being removed from detectors; the pressure normally stays below 5E-5 Torr | + | * Monitor the pressure of the focal plane vacuum chamber (as read out via the I264IG ion gauge in PanelMate **S800vac.MT2 page 07**) while gas is being removed from detectors; the pressure normally stays below 5E-5 Torr |
* Ensure that the system is in the normal state for flowing gas through the detectors | * Ensure that the system is in the normal state for flowing gas through the detectors |