From latta at snf.stanford.edu Thu Feb 1 17:22:53 2007 From: latta at snf.stanford.edu (latta at snf.stanford.edu) Date: Thu, 1 Feb 2007 17:22:53 -0800 Subject: Comment tylan2 SNF 2007-01-03 16:54:12: Jan process quals Message-ID: to the archives! From latta at snf.stanford.edu Thu Feb 1 17:24:28 2007 From: latta at snf.stanford.edu (latta at snf.stanford.edu) Date: Thu, 1 Feb 2007 17:24:28 -0800 Subject: Comment tylan2 SNF 2007-02-01 17:24:28: Feb process quals Message-ID: WET900 00:39:00 50 wafer spread Average all wafers = 997A Within-a-wafer = 1.6% Wafer-to-wafer = 2.0% From gladys at snf.stanford.edu Thu Feb 8 15:55:09 2007 From: gladys at snf.stanford.edu (gladys at snf.stanford.edu) Date: Thu, 8 Feb 2007 15:55:09 -0800 Subject: Problem tylan2 SNF 2007-02-08 15:55:08: unstable temp Message-ID: Started with a B problem on TempL Few minutes later tempC also showed same problem. Monitored the temp for about 40 minutes, both TempL and tempC stayed below the temp setting.Once in a while tempC will jump from 660-750-1000! I put it on hold for an hour and a half, finally the temp seemed to stabilize. From seymour at snf.stanford.edu Mon Feb 12 07:51:47 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Mon, 12 Feb 2007 07:51:47 -0800 Subject: Problem tylan2 SNF 2007-02-08 15:55:08: unstable temp Message-ID: Temp has been stable since 2/8 From ratiug at snf.stanford.edu Mon Feb 12 15:46:35 2007 From: ratiug at snf.stanford.edu (ratiug at snf.stanford.edu) Date: Mon, 12 Feb 2007 15:46:35 -0800 Subject: Problem tylan2 SNF 2007-02-12 15:46:34: temperature is not stable during oxidation Message-ID: should be 900C but it vaired around 50C from load to source. From seymour at snf.stanford.edu Mon Feb 12 16:01:59 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Mon, 12 Feb 2007 16:01:59 -0800 Subject: Problem tylan2 SNF 2007-02-12 16:01:58: front zone temp low Message-ID: The center and rear zone looked ok. Tomorrow I will start a backup t/c calibration routine to tighten control of temp. From mtang at snf.stanford.edu Tue Feb 13 09:26:12 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Tue, 13 Feb 2007 09:26:12 -0800 Subject: Shutdown tylan2 SNF 2007-02-13 09:26:10: Check TC problem Message-ID: Ray will be checking TC connections and TCU board. From seymour at snf.stanford.edu Tue Feb 13 09:51:05 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Tue, 13 Feb 2007 09:51:05 -0800 Subject: Shutdown tylan2 SNF 2007-02-13 09:26:10: Check TC problem Message-ID: checked and tightened profile t/c connections From seymour at snf.stanford.edu Tue Feb 13 09:54:45 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Tue, 13 Feb 2007 09:54:45 -0800 Subject: Problem tylan2 SNF 2007-02-12 16:01:58: front zone temp low Message-ID: checked t/c connections and TCU statistics for backup t/c's. Did not run backup t/c calibration as profile and backup t/c'ss reading same temp. From seymour at snf.stanford.edu Tue Feb 13 09:58:03 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Tue, 13 Feb 2007 09:58:03 -0800 Subject: Problem tylan2 SNF 2007-02-12 15:46:34: temperature is not stable during oxidation Message-ID: Checked temp first thing this morning and all zones within .2 degrees of setpoint. looked at backup t/c's readings and very close to profile readings, backup calibratrion not required at this time. From ratiug at snf.stanford.edu Sat Feb 17 14:43:19 2007 From: ratiug at snf.stanford.edu (ratiug at snf.stanford.edu) Date: Sat, 17 Feb 2007 14:43:19 -0800 Subject: Problem tylan2 SNF 2007-02-17 14:43:19: Temp at Load side is far off Message-ID: should be 800C but shown 400C From latta at snf.stanford.edu Tue Feb 20 11:50:13 2007 From: latta at snf.stanford.edu (latta at snf.stanford.edu) Date: Tue, 20 Feb 2007 11:50:13 -0800 Subject: Problem tylan2 SNF 2007-02-20 11:50:13: H2/O2 alarm sounding Message-ID: From seymour at snf.stanford.edu Wed Feb 21 08:53:58 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Wed, 21 Feb 2007 08:53:58 -0800 Subject: Problem tylan2 SNF 2007-02-20 11:50:13: H2/O2 alarm sounding Message-ID: Zero on H2 MFC was off Mike adjusted it. From mtang at snf.stanford.edu Wed Feb 21 09:18:41 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Wed, 21 Feb 2007 09:18:41 -0800 Subject: Shutdown tylan2 SNF 2007-02-21 09:18:41: Front Zone temp problem Message-ID: Will check TCU board. From mtang at snf.stanford.edu Thu Feb 22 09:13:28 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Thu, 22 Feb 2007 09:13:28 -0800 Subject: Shutdown tylan2 SNF 2007-02-21 09:18:41: Front Zone temp problem Message-ID: TCU Board replaced. Tube recal underway. From mtang at snf.stanford.edu Thu Feb 22 09:14:30 2007 From: mtang at snf.stanford.edu (mtang at snf.stanford.edu) Date: Thu, 22 Feb 2007 09:14:30 -0800 Subject: Shutdown tylan2 SNF 2007-02-22 09:14:29: TCU Board Cal Message-ID: TCU board was replaced, which should address the front temp zone control problem. Tube temperature recal underway - could take a couple of days to complete. From seymour at snf.stanford.edu Mon Feb 26 07:49:22 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Mon, 26 Feb 2007 07:49:22 -0800 Subject: Shutdown tylan2 SNF 2007-02-22 09:14:29: TCU Board Cal Message-ID: Backup t/c calibration completed. There is a ongoing load zone T/C problem From seymour at snf.stanford.edu Mon Feb 26 07:50:07 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Mon, 26 Feb 2007 07:50:07 -0800 Subject: Shutdown tylan2 SNF 2007-02-26 07:50:06: Temp controller load zone T/C problem Message-ID: From seymour at snf.stanford.edu Wed Feb 28 11:26:40 2007 From: seymour at snf.stanford.edu (seymour at snf.stanford.edu) Date: Wed, 28 Feb 2007 11:26:40 -0800 Subject: Shutdown tylan2 SNF 2007-02-28 11:26:40: loader sheath broken Message-ID: Nancy opened tube and found sheath broken. I turned element breaker off From mdickey at snf.stanford.edu Wed Feb 28 13:33:13 2007 From: mdickey at snf.stanford.edu (mdickey at snf.stanford.edu) Date: Wed, 28 Feb 2007 13:33:13 -0800 Subject: Comment tylan2 SNF 2007-02-28 13:33:12: Bearing Message-ID: There is no broken sheath. The front loader bearing came out. Now dealing with tube alignment issues.