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Entry  Fri Aug 7 09:50:57 2009, steve, Configuration, VAC, IFO pressure rose to 2.3 mTorr tp2fpfail.jpg
    Reply  Fri Aug 7 16:11:11 2009, steve, rob, Configuration, VAC, IFO pressure rose to 2.3 mTorr 
Message ID: 1857     Entry time: Fri Aug 7 16:11:11 2009     In reply to: 1852
Author: steve, rob 
Type: Configuration 
Category: VAC 
Subject: IFO pressure rose to 2.3 mTorr 


IFO pressure was 2.3 mTorr this morning,

The Maglev's foreline valve  V4 was closed so P2 rose to 4 Torr. The Maglev was running fine with V1 open.

This is a good example for V1 to be closed by interlock, because at 4 Torr foreline pressure the compression ratio for hydrocarbones goes down.

V4 was closed by interlock when TP2 lost it's drypump. The drypump's AC plug was lose.

To DO: set up  interlock  to close V1 if P2 exceeds 1 Torr




We added C1:Vac-CC1_pressure to the alarm handler, with the minor alarm at 5e-6 torr and the major alarm at 1e-5 torr.

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