From jperez at snf.stanford.edu  Thu Sep  1 07:38:04 2011
From: jperez at snf.stanford.edu (jperez at snf.stanford.edu)
Date: Thu, 1 Sep 2011 07:38:04 -0700
Subject: Problem metalica SNF 2011-08-29 16:08:53: hard to see through viewport
Message-ID: <mailman.1400.1357938533.25834.metalica-pcs@snf.stanford.edu>

Replaced view port quartz.



From sgchong at snf.stanford.edu  Sat Sep  3 00:18:12 2011
From: sgchong at snf.stanford.edu (sgchong at snf.stanford.edu)
Date: Sat, 3 Sep 2011 00:18:12 -0700
Subject: Comment metalica SNF 2011-09-03 00:18:11: Arcing during Pt deposition
Message-ID: <mailman.1401.1357938533.25834.metalica-pcs@snf.stanford.edu>

May be due to insufficient or too much silver paste



From vossough at snf.stanford.edu  Tue Sep 13 21:38:41 2011
From: vossough at snf.stanford.edu (vossough at snf.stanford.edu)
Date: Tue, 13 Sep 2011 21:38:41 -0700
Subject: Problem metalica SNF 2011-09-13 21:38:40: 
Message-ID: <mailman.1402.1357938533.25834.metalica-pcs@snf.stanford.edu>

I found Metallica's roughing pump switch ON (Green light) and the roughing valve partially open. the chamber was roughed down to less than 5 mtorr. I don't know how long, but suspect roughing pump oil backstreaming in the chamber.



From jhaydon at snf.stanford.edu  Wed Sep 14 07:29:10 2011
From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu)
Date: Wed, 14 Sep 2011 07:29:10 -0700
Subject: Problem metalica SNF 2011-09-13 21:38:40: 
Message-ID: <mailman.1403.1357938533.25834.metalica-pcs@snf.stanford.edu>

if Hi vacuum valve was not opened then there is no problem . Th pump being used is a dry pump (no oil)



From ntayebi at snf.stanford.edu  Thu Sep 15 18:38:44 2011
From: ntayebi at snf.stanford.edu (ntayebi at snf.stanford.edu)
Date: Thu, 15 Sep 2011 18:38:44 -0700
Subject: Shutdown metalica SNF 2011-09-15 18:38:44: cryo pump temp 50k
Message-ID: <mailman.1404.1357938533.25834.metalica-pcs@snf.stanford.edu>

When tying  to deposit cryopump jumped to 45 k and pressure went up. 



From jhaydon at snf.stanford.edu  Fri Sep 16 10:11:39 2011
From: jhaydon at snf.stanford.edu (jhaydon at snf.stanford.edu)
Date: Fri, 16 Sep 2011 10:11:39 -0700
Subject: Shutdown metalica SNF 2011-09-15 18:38:44: cryo pump temp 50k
Message-ID: <mailman.1405.1357938533.25834.metalica-pcs@snf.stanford.edu>

regen complete



From jperez at snf.stanford.edu  Thu Sep 22 07:04:42 2011
From: jperez at snf.stanford.edu (jperez at snf.stanford.edu)
Date: Thu, 22 Sep 2011 07:04:42 -0700
Subject: Comment metalica SNF 2011-09-03 00:18:11: Arcing during Pt deposition
Message-ID: <mailman.1406.1357938533.25834.metalica-pcs@snf.stanford.edu>

Since others have used the Pt target I have to say it is due to the 
set-up which would include too much paste.



From jperez at snf.stanford.edu  Mon Sep 26 11:57:07 2011
From: jperez at snf.stanford.edu (jperez at snf.stanford.edu)
Date: Mon, 26 Sep 2011 11:57:07 -0700
Subject: Problem metalica SNF 2011-09-26 11:57:06: Couldn't get pressure to stablize by adjusting gate valve.
Message-ID: <mailman.1407.1357938533.25834.metalica-pcs@snf.stanford.edu>

I had to quit, ran out of time.



From jperez at snf.stanford.edu  Thu Sep 29 07:06:56 2011
From: jperez at snf.stanford.edu (jperez at snf.stanford.edu)
Date: Thu, 29 Sep 2011 07:06:56 -0700
Subject: Problem metalica SNF 2011-09-26 11:57:06: Couldn't get pressure to stablize by adjusting gate valve.
Message-ID: <mailman.1408.1357938533.25834.metalica-pcs@snf.stanford.edu>

Three days of usage without anyone reporting a problem.
A fluke or operator error. I was the operator.