venting_pumping_intermediate_image_box
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venting_pumping_intermediate_image_box [2018/12/19 11:48] 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 | ||
| Line 116: | Line 117: | ||
| * 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" | ||
| - | * Valve V2 (Gas lin pmp out) will be opened and I214V_NCL will change from closed to "ENABLED" | + | * Valves V1 (I214 Gas Sup) and I214V_NCL will close |
| + | * Valves V3 (Flow Bypass) and Det Bypass (V5) will open | ||
| + | * I214CM Press Rdg will gradually decrease to zero | ||
| + | * GH System status should indicate "Gas Removal" | ||
| + | * When the gas is removed from the detector | ||
| + | * Valve V3 (Flow Bypass) and 4 (Det return) will close | ||
| + | * Valve V6 (Chamber Bypass) will open | ||
| + | * GH System status will indicate "Gas Removed" | ||
| + | * 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) | ||
| + | * Close the gas bottle valve (sitting near the gas handling system) | ||
venting_pumping_intermediate_image_box.1545238096.txt.gz · Last modified: 2018/12/19 11:48 by pereira
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