From masaharu at snf.stanford.edu Mon Jun 1 23:40:23 2009 From: masaharu at snf.stanford.edu (masaharu at snf.stanford.edu) Date: Mon, 1 Jun 2009 23:40:23 -0700 Subject: Shutdown tylan3 SNF 2009-06-01 23:40:22: TC unstable at low temperature Message-ID: I tried to stabilize the tube at 450deg (low temperature). The third TC went back and forth between 477B and 400.0 and wasn't stabilized. High temperature may not have problem on that. But for stable low temperature oxidation, I appreciate TC inspection. From tberg at snf.stanford.edu Tue Jun 2 06:11:58 2009 From: tberg at snf.stanford.edu (tberg at snf.stanford.edu) Date: Tue, 2 Jun 2009 06:11:58 -0700 Subject: Shutdown tylan3 SNF 2009-06-01 23:40:22: TC unstable at low temperature Message-ID: Should NOT be shutdown.Still very functional at normal temps From tberg at snf.stanford.edu Tue Jun 2 06:12:35 2009 From: tberg at snf.stanford.edu (tberg at snf.stanford.edu) Date: Tue, 2 Jun 2009 06:12:35 -0700 Subject: Problem tylan3 SNF 2009-06-02 06:12:34: Temp issues at 400 C Message-ID: From seymour at snf.stanford.edu Tue Jun 2 10:29:03 2009 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Tue, 2 Jun 2009 10:29:03 -0700 Subject: Problem tylan3 SNF 2009-06-02 06:12:34: Temp issues at 400 C Message-ID: manually set furnace to 450 and when I checked after a couple of hours it weas 450 451 and 453 in F, Cand S. It takes quite a while to cool the tubes under control from 800 to 450. A low temp oxidation requires this wait for the cooldown. As per the "B" issue none were found on the Tycom during the time I monitored the cooldown. From masaharu at snf.stanford.edu Wed Jun 3 02:57:09 2009 From: masaharu at snf.stanford.edu (masaharu at snf.stanford.edu) Date: Wed, 3 Jun 2009 02:57:09 -0700 Subject: Problem tylan3 SNF 2009-06-03 02:57:08: TC(S) stabilized at 10degC below 450degC Message-ID: During low temperature oxidation, I observed 10degC lower stabilization of TCS in DRY450A2 run. It stays at 440degC even in long oxidation. Other two TCs are ok. Last month, all TCs were working well. From latta at snf.stanford.edu Wed Jun 3 10:31:37 2009 From: latta at snf.stanford.edu (latta at snf.stanford.edu) Date: Wed, 3 Jun 2009 10:31:37 -0700 Subject: Comment tylan3 SNF 2009-06-03 10:31:37: June quals Message-ID: WET900 00:39:00 50 wafer spread (expect about 920A) Front = 932A, Std Dev = 2.7 Front Center = 941A, Std Dev = 3.3 Back Center = 947A, Std Dev = 3.2 Back = 951A, Std Dev = 2.7 Average All = 943A From latta at snf.stanford.edu Wed Jun 3 10:31:49 2009 From: latta at snf.stanford.edu (latta at snf.stanford.edu) Date: Wed, 3 Jun 2009 10:31:49 -0700 Subject: Comment tylan3 SNF 2009-05-15 16:13:35: May re-qual after torch change Message-ID: archived From tberg at snf.stanford.edu Wed Jun 3 13:28:26 2009 From: tberg at snf.stanford.edu (tberg at snf.stanford.edu) Date: Wed, 3 Jun 2009 13:28:26 -0700 Subject: Comment tylan3 SNF 2009-06-03 13:28:25: Temp Cal Message-ID: From tberg at snf.stanford.edu Thu Jun 4 09:47:30 2009 From: tberg at snf.stanford.edu (tberg at snf.stanford.edu) Date: Thu, 4 Jun 2009 09:47:30 -0700 Subject: Comment tylan3 SNF 2009-06-03 13:28:25: Temp Cal Message-ID: Completed temp cal from 400 to 1100 looks good From seymour at snf.stanford.edu Fri Jun 5 15:01:34 2009 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Fri, 5 Jun 2009 15:01:34 -0700 Subject: Problem tylan3 SNF 2009-06-03 02:57:08: TC(S) stabilized at 10degC below 450degC Message-ID: T/C cal ran from 400 to 1100.