S800 Documentation

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vacuum_control

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vacuum_control [2016/11/09 15:27]
pereira [Venting analysis-line lower-dipole section] 		vacuum_control [2016/11/10 23:12]
pereira [Venting analysis-line lower-dipole section]
Line 53: Line 53:
   - Using the EMIS controllers in the middle level of the S3 vault (see figure above), ensure that the ion gauge I225IG is turned off.   - Using the EMIS controllers in the middle level of the S3 vault (see figure above), ensure that the ion gauge I225IG is turned off.
   - Ensure that gate valves I246GV (between lower-dipole section and target area) and I215GV (between intermediate image area and the lower-dipole section) are closed.   - Ensure that gate valves I246GV (between lower-dipole section and target area) and I215GV (between intermediate image area and the lower-dipole section) are closed.
-  - Open S800vac with PanelMate. +  - Open **S800vac** PanelMate. 
-  - Go to page 4 ("lower beamline dipoles vacuum system, section 16)+  - Go to page 4 ("lower beamline dipoles vacuum system, section 16")
   - Window "VENT STATUS" should be green and display "GOOD VACUUM"   - Window "VENT STATUS" should be green and display "GOOD VACUUM"
-  - Click on "VENT STATUS" and select "BEGIN VENTING PROCESS". The I225GV turbo gate valve will be automatically closed (see figure below). However, the venting process won't be complete until you open the manual valve. +  - Click on "VENT STATUS" and select "BEGIN VENTING PROCEDURE". The I225GV turbo gate valve will be automatically closed (see figure below). However, the venting process won't be complete until you open the manual valve. 
-  - Walk to the bottom level of the S3 vault, near the intermediate image box. Locate the I226PG Pirani gauge and ensure that it reads rough-vacuum pressure (few militorr).+  - Walk to the bottom level of the S3 vault, right downstream of the last two dipoles of the analysis line. Locate the I226PG Pirani gauge and ensure that it reads rough-vacuum pressure (few militorr).
   - Slowly open the manual valve (see picture below) and verify that the pressure read in I226PG raises slowly.   - Slowly open the manual valve (see picture below) and verify that the pressure read in I226PG raises slowly.
   - After the section is vented (atmospheric pressure) close the manual gate valve.   - After the section is vented (atmospheric pressure) close the manual gate valve.
  
  
-{{:wiki:panelmates800vac-ventinglowerdipoles.jpg?850|PanelMate s800va (page 16) displaying venting status of lower-dipole section}}+{{:wiki:panelmates800vac-ventinglowerdipoles.jpg?800|PanelMate s800va (page 4) displaying venting status of lower-dipole section}}
  
  
-{{:wiki:manualvalve-lowerdipoles.jpg?850|Manual venting valve of lower-dipole section}}+{{:wiki:manualvalve-lowerdipoles.jpg?800|Manual venting valve of lower-dipole section}}
 ===== Spectrograph ===== ===== Spectrograph =====
 This system is pumped with cryopumps. Please do not vent this section if the target chamber is under vacuum pressure. The pressure gradient between both sections would "push" the structure of the spectrograph beam line towards the target chamber, potentially damaging the bellows of the line. This system is pumped with cryopumps. Please do not vent this section if the target chamber is under vacuum pressure. The pressure gradient between both sections would "push" the structure of the spectrograph beam line towards the target chamber, potentially damaging the bellows of the line.
vacuum_control.txt · Last modified: 2019/10/17 10:43 by pereira

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