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venting_pumping_intermediate_image_box [2018/12/19 11:56]
pereira [Filling Intermediate-image delay PPAC with gas]
venting_pumping_intermediate_image_box [2019/02/13 09:40] (current)
pereira [Removing gas from Intermediate-image delay PPAC]
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         * Check that the detectors are unbiased by opening the [[HV bias|HV GUI]]         * Check that the detectors are unbiased by opening the [[HV bias|HV GUI]]
         * Notify the system of the bias-off state by selecting the "​I214BON_CONFIRM"​ box in **S3_Gas_Handling** and clicking "PP BIAS OFF CONFIRMED"​         * Notify the system of the bias-off state by selecting the "​I214BON_CONFIRM"​ box in **S3_Gas_Handling** and clicking "PP BIAS OFF CONFIRMED"​
 +  * Verify that ion gauge I213IG is off
   * Verify that PPACs are in automatic mode with gas removed (**S3_Gas_Handling**)   * Verify that PPACs are in automatic mode with gas removed (**S3_Gas_Handling**)
         * The "GH System Status box should read "Auto Mode Gas Removed"​         * The "GH System Status box should read "Auto Mode Gas Removed"​
-        * If gas is removed but the system is not in the automatic mode, consult the Beam Physicists or Device Physicist. This typically requires to verify that the system is in a controlled status. In particular, the "​I214BON_CONFIRM"​ box should indicate "PP BIAS OFF CONFIRMED",​ and the only that should be open in **S3_Gas_Handling** are the "Det Bypass"​ (V5) and "Chmbr Bypass"​ (V6); the rest of the valves (Gas Sup V1, Gas Lin Pmp Out V2, Flow Bypass V3, Det Return V4, and I214V_NCL (enable)) should be closed+        * If gas is removed but the system is not in the automatic mode, consult the Beam Physicists or Device Physicist. This typically requires to verify that the system is in a controlled status. In particular, the "​I214BON_CONFIRM"​ box should indicate "PP BIAS OFF CONFIRMED",​ and the only valves ​that should be open in **S3_Gas_Handling** are the "Det Bypass"​ (V5) and "Chmbr Bypass"​ (V6); the rest of the valves (Gas Sup V1, Gas Lin Pmp Out V2, Flow Bypass V3, Det Return V4, and I214V_NCL (enable)) should be closed
   * Confirm that PanelMate box "​I214P_AUTO/​MAN Pre Set" reads 5 Torr (the set gas pressure in the detector) ​   * Confirm that PanelMate box "​I214P_AUTO/​MAN Pre Set" reads 5 Torr (the set gas pressure in the detector) ​
   * Open the gas bottle valve (sitting near the gas handling system)   * Open the gas bottle valve (sitting near the gas handling system)
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         * GH System status will indicate "Flow Estab."​         * GH System status will indicate "Flow Estab."​
         * I214BON_CONFIM will change to "PPAC BIAS ASSUMED ON"         * I214BON_CONFIM will change to "PPAC BIAS ASSUMED ON"
-        * The valves status will be: V1 (open), V2 (closed), V3 (closed), V4 (open), V5 (closed), V6 (closed, I214V_NCL (enabled)+        * The valves status will be: V1 (open), V2 (closed), V3 (closed), V4 (open), V5 (closed), V6 (closed), I214V_NCL (enabled)
         * You can now turn on the detectors         * You can now turn on the detectors
  
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               * Det Bypass V5 (closed)               * Det Bypass V5 (closed)
               * Chmbr Bypass (closed)               * Chmbr Bypass (closed)
-              * I1214V_NCL ​(enabled) ​+              * I214V_NCL ​(enabled) ​
   * PanelMate box "Gas Removal Control"​ should indicate "OK to Start Gas Removal"​. Select that box and click on "Start Gas Removal"​   * PanelMate box "Gas Removal Control"​ should indicate "OK to Start Gas Removal"​. Select that box and click on "Start Gas Removal"​
         * Valves V1 (I214 Gas Sup) and I214V_NCL will close          * Valves V1 (I214 Gas Sup) and I214V_NCL will close 
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         * I214BON_CONFIM will change to "PPAC BIAS ASSUMED ON"         * I214BON_CONFIM will change to "PPAC BIAS ASSUMED ON"
         * The valves status will be: V1 (closed), V2 (closed), V3 (closed), V4 (closed), V5 (open), V6 (open), I214V_NCL (closed)         * The valves status will be: V1 (closed), V2 (closed), V3 (closed), V4 (closed), V5 (open), V6 (open), I214V_NCL (closed)
- +  * Close the gas bottle valve (sitting near the gas handling system)
  
venting_pumping_intermediate_image_box.1545238563.txt.gz · Last modified: 2018/12/19 11:56 by pereira