From cbaxter at snf.stanford.edu  Fri Jul 18 04:22:50 2003
From: cbaxter at snf.stanford.edu (cbaxter at snf.stanford.edu)
Date: Jul 18, 2003 4:22:50 PM
Subject: Shutdown AG4108 2003-07-18 16:22:49: Report Shutdown for AG4108
Message-ID: <mailman.81.1356280549.3222.ag4108-pcs@snf.stanford.edu>

shutdown. to switch over from n2 to cda



From cbaxter at snf.stanford.edu  Fri Jul 18 05:03:32 2003
From: cbaxter at snf.stanford.edu (cbaxter at snf.stanford.edu)
Date: Jul 18, 2003 5:03:32 PM
Subject: Shutdown AG4108 2003-07-18 16:22:49: Report Clear for AG4108
Message-ID: <mailman.82.1356280549.3222.ag4108-pcs@snf.stanford.edu>

n2 to cda switched completed



From kailash at snf.stanford.edu  Sat Jul 26 04:55:34 2003
From: kailash at snf.stanford.edu (kailash at snf.stanford.edu)
Date: Jul 26, 2003 4:55:34 PM
Subject: Problem AG4108 2003-07-26 16:55:33: Out of ammonia
Message-ID: <mailman.83.1356280549.3222.ag4108-pcs@snf.stanford.edu>

hi,
It seems that the ammonia bottle in the basement may have run out. I ran an oxynitridation recipeand it stopped in the steady state. The ammonia gas flow starts of at the right value but drops a few seconds into the process. Both the reading on the screen and the reading on the valve on the leftside of the machine indicate so. The ammonia bottle may have been empty. Thanks,
- Kailash