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gas_handling_system [2017/01/22 16:43] pereira [Detector gas handling system] |
gas_handling_system [2017/05/14 10:05] pereira [Filling CRDC1 and CRDC2 with Gas] |
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====== Detector gas handling system ====== | ====== Detector gas handling system ====== | ||
- | General | + | * [[#General |
+ | * [[#LabView Control Program]] | ||
+ | * [[# | ||
+ | * [[#Filling Ion Chamber with Gas]] | ||
+ | * [[#Filling CRDC1 and CRDC2 with Gas]] | ||
+ | * [[#Removing Gas from Focal Plane Detectors]] | ||
+ | * [[#Tracking Gas bottles pressures|Tracking Gas bottles pressures from Barney]] | ||
+ | * [[# | ||
===== General Information ===== | ===== General Information ===== | ||
Required controls and monitoring | Required controls and monitoring | ||
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* Click on the tab labeled **Slot 8 (M-card) IC** to access the page with the pressure set point control | * Click on the tab labeled **Slot 8 (M-card) IC** to access the page with the pressure set point control | ||
* Enter the desired pressure (typically 300 Torr) in the field under the knob labeled Set Point | * Enter the desired pressure (typically 300 Torr) in the field under the knob labeled Set Point | ||
+ | * Click button labeled **Update Set Point** | ||
* Click button labeled **Return to AUTO Mode** on left to start filling/ | * Click button labeled **Return to AUTO Mode** on left to start filling/ | ||
* Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #1 will increase and eventually disappear as the readout value overflows the display field (this is normal behavior) | * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #1 will increase and eventually disappear as the readout value overflows the display field (this is normal behavior) | ||
- | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFC #1** | ||
* Open **valve 9** | * Open **valve 9** | ||
+ | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFC #1** | ||
* The filling process will take several minutes | * The filling process will take several minutes | ||
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* Fill CRDCs | * Fill CRDCs | ||
* Enter the desired fill pressure and start the automatic filling process | * Enter the desired fill pressure and start the automatic filling process | ||
- | * Click the **Zero Sensor** button | ||
* Click on the tab labeled **Virtual Ch. 0 (CRDC)** to access the page with the pressure set point control | * Click on the tab labeled **Virtual Ch. 0 (CRDC)** to access the page with the pressure set point control | ||
* Enter the desired pressure (typically 40 Torr) in the field under the knob labeled **Set Point** | * Enter the desired pressure (typically 40 Torr) in the field under the knob labeled **Set Point** | ||
+ | * Click button labeled **Update Set Point** | ||
* Click button labeled **Return to AUTO Mode** on left to start filling/ | * Click button labeled **Return to AUTO Mode** on left to start filling/ | ||
* Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #2 and MFC #3 will increase. The LabView application controls the gas mixing ratio based on the flow ratio (scaled with a calibration constant) | * Click the **Valves** tab at the top of the LabView window to return to the overview display of the gas handling system to monitor filling. The flow readings for MFC #2 and MFC #3 will increase. The LabView application controls the gas mixing ratio based on the flow ratio (scaled with a calibration constant) | ||
+ | * Open **valve 25** | ||
* If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFCs #2 & #3** | * If necessary, the filling process can be stopped at any time by pressing the valve button labeled **Close MFCs #2 & #3** | ||
- | * Open **valve 25** | ||
* The filling process will take several minutes | * The filling process will take several minutes | ||
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{{: | {{: | ||
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+ | ===== Replacing Gas bottles ===== | ||
+ | In preparation |