From latta at snf.stanford.edu  Fri Oct  2 17:40:52 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Fri, 2 Oct 2009 17:40:52 -0700
Subject: Comment tylan3 SNF 2009-10-02 17:40:51: Oct quals
Message-ID: <mailman.467.1357938834.25964.tylan3-pcs@snf.stanford.edu>

WET900  00:39:00  50 wafer spread
  (expect about 920A)
Front = 844A, Std Dev = 12.2
Front Center = 872A, Std Dev = 9.0
Back Center = 887A, Std Dev = 6.3
Back = 890A, Std Dev = 3.3
Average All = 873A



From latta at snf.stanford.edu  Fri Oct  2 17:41:24 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Fri, 2 Oct 2009 17:41:24 -0700
Subject: Comment tylan3 SNF 2009-09-11 17:33:18: Sept re-qual
Message-ID: <mailman.468.1357938834.25964.tylan3-pcs@snf.stanford.edu>

archive



From latta at snf.stanford.edu  Thu Oct  8 11:00:13 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Thu, 8 Oct 2009 11:00:13 -0700
Subject: Problem tylan3 SNF 2009-10-08 11:00:12: Oxide growth thin
Message-ID: <mailman.469.1357938834.25964.tylan3-pcs@snf.stanford.edu>

Uniformity is ok.  See comments for qual results



From seymour at snf.stanford.edu  Fri Oct  9 08:54:44 2009
From: seymour at snf.stanford.edu (seymour at snf.stanford.edu)
Date: Fri, 9 Oct 2009 08:54:44 -0700
Subject: Comment tylan3 SNF 2009-10-09 08:54:44: thinox
Message-ID: <mailman.470.1357938834.25964.tylan3-pcs@snf.stanford.edu>

I checked zone temps againse external meter and tycom and calibrator agreed. I checked torch and it is good as new and the connections were tight. checked and adjusted boat and loader alignment. checked operation of loader. Started trans L clean. tube will need test for uniformity after clean completed.



From latta at snf.stanford.edu  Wed Oct 14 16:32:52 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Wed, 14 Oct 2009 16:32:52 -0700
Subject: Comment tylan3 SNF 2009-10-09 08:54:44: thinox
Message-ID: <mailman.471.1357938834.25964.tylan3-pcs@snf.stanford.edu>

uniformity checked and posted in comments



From latta at snf.stanford.edu  Wed Oct 14 16:33:27 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Wed, 14 Oct 2009 16:33:27 -0700
Subject: Comment tylan3 SNF 2009-10-02 17:40:51: Oct quals
Message-ID: <mailman.472.1357938834.25964.tylan3-pcs@snf.stanford.edu>

re-qualed



From latta at snf.stanford.edu  Wed Oct 14 16:36:51 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Wed, 14 Oct 2009 16:36:51 -0700
Subject: Comment tylan3 SNF 2009-10-14 16:36:50: Oct re-quals
Message-ID: <mailman.473.1357938834.25964.tylan3-pcs@snf.stanford.edu>

WET900  00:39:00  50 wafer spread
  (expect about 920A)
Front = 895A, Std Dev = 3.4
Front Center = 907A, Std Dev = 4.0
Back Center = 914A, Std Dev = 4.0
Back = 910A, Std Dev = 2.4
Average All = 907A
Note: zone temps, torch and loader alignment checked.



From latta at snf.stanford.edu  Wed Oct 14 16:39:28 2009
From: latta at snf.stanford.edu (latta at snf.stanford.edu)
Date: Wed, 14 Oct 2009 16:39:28 -0700
Subject: Problem tylan3 SNF 2009-10-08 11:00:12: Oxide growth thin
Message-ID: <mailman.474.1357938834.25964.tylan3-pcs@snf.stanford.edu>

Improved after zone temps, torch and loader alignment checked.
Still thin, but in looking back at recent quals (through July) this tube has had a slow growthrate with occasional normal rates.
Needs further looking into.