Differences

This shows you the differences between two versions of the page.

--- playground:alpha [2009/04/15 16:27]
132.235.40.233 added figure
+++ playground:alpha [2010/07/16 14:53]
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 At the Control Console:
 . Check the source vacuum is less than 5x10-6 torr.
 In the Vault:
 . Check the vacuum in the low energy extension is less than 5x10-6 torr then open the tube gate valve on the ion source vacuum control panel.
-. Check valve on gas supply bottle is open and regulator set for ~5 psig. Note this will be the case unless work has been done on the gas supply systems, the supply bottle is very low (causing the regulator to read high), or you are changing between 4He and 3He. See instructions below on running 3He. If is suspected that there is air or another contaminant in the gas lines then they should be roughed out and purged three times using the roughing pump on the leak checker.
+. Check valve on gas supply bottle is open and regulator set for ~5 psig. Note this will be the case unless work has been done on the gas supply systems, the supply bottle is very low (causing the regulator to read high), or you are changing between 4He and 3He. See instructions below on running 3He. If is suspected that there is air or another contaminant in the gas lines then they should be roughed out and purged three times using the roughing pump on the leak checker.
 On the way back to the control room:

Accelerator Handbook