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venting_pumping_intermediate_image_box [2024/01/11 14:51]
noji [Venting the Chamber]
venting_pumping_intermediate_image_box [2024/01/12 09:37] (current)
noji [Filling and Running Detectors]
Line 2: Line 2:
   * [[#General information]]   * [[#General information]]
   * [[#Emptying Detectors]]   * [[#Emptying Detectors]]
 +  * [[#Venting the Chamber]]
 +  * [[#Evacuating the Chamber]]
   * [[#Filling and Running Detectors]]   * [[#Filling and Running Detectors]]
   * [[#Troubleshooting]]   * [[#Troubleshooting]]
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 ===== Emptying Detectors ===== ===== Emptying Detectors =====
 +  - Double check that the detectors have been unbiased.
   - Set “PPAC Setpoint” to 0 Torr.   - Set “PPAC Setpoint” to 0 Torr.
   - Click **EMPTY** on the “GHS_II-PPAC_Main” page to open valves #3 and #4 which will allow for pumping out the gas quickly.   - Click **EMPTY** on the “GHS_II-PPAC_Main” page to open valves #3 and #4 which will allow for pumping out the gas quickly.
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 To vent the chamber: To vent the chamber:
-  - Put the GHS in vent mode by clicking **VENT** (valves #5 and #6 are open),+  - Let the Control Room and the Vacuum Operation Group be aware as EXP alarms may occur, 
 +  - put the GHS in vent mode by clicking **VENT** (valves #5 and #6 are open),
   - monitor **RBT_BTS32:BPG_D2430:VP_RD** and **S800_GHS:PI_D2431:V_RD_AB** in a data browser,   - monitor **RBT_BTS32:BPG_D2430:VP_RD** and **S800_GHS:PI_D2431:V_RD_AB** in a data browser,
   - ensure that **RV**, the valve to the roughing pump, is closed, and   - ensure that **RV**, the valve to the roughing pump, is closed, and
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   - Be sure to go back to S3 and close the manual valve.   - Be sure to go back to S3 and close the manual valve.
 ===== Filling and Running Detectors ===== ===== Filling and Running Detectors =====
-  - If in Vent Mode, click **PUMP** then click **RUN** to enter Run Mode.+  - If in Vent Mode, click **PUMP** then click **RUN** to enter Run Mode. The valves #1 opens and #3 remains open (#5 and #6 will be closed, and the GHS lines will be isolated from the chamber).
   - If in Pump Mode, click **RUN** to enter Run Mode.   - If in Pump Mode, click **RUN** to enter Run Mode.
   - Plot and monitor IG_D2430:VP_RD while filling. Ion gauge reading will increase but should remain <1E-5 Torr when PPACs are running at full pressure.    - Plot and monitor IG_D2430:VP_RD while filling. Ion gauge reading will increase but should remain <1E-5 Torr when PPACs are running at full pressure. 
venting_pumping_intermediate_image_box.1705002706.txt.gz · Last modified: 2024/01/11 14:51 by noji