From mcvittie at snf.stanford.edu Thu Jul 1 17:12:47 2010 From: mcvittie at snf.stanford.edu (mcvittie at snf.stanford.edu) Date: Thu, 1 Jul 2010 17:12:47 -0700 Subject: Shutdown stsetch2 SNF 2010-07-01 17:12:45: STS2- Software Interlock fault for both 13MHz Generators Message-ID: From eenriquez at snf.stanford.edu Tue Jul 6 11:03:45 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 6 Jul 2010 11:03:45 -0700 Subject: Shutdown stsetch2 SNF 2010-07-01 17:12:45: STS2- Software Interlock fault for both 13MHz Generators Message-ID: Turned on coil chiller and ran recipes in auto with no problems except for the known rf interlock problem. From eenriquez at snf.stanford.edu Tue Jul 6 11:04:23 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 6 Jul 2010 11:04:23 -0700 Subject: Problem stsetch2 SNF 2010-06-25 00:44:16: LLC error Message-ID: Jim power cycled the system. From eenriquez at snf.stanford.edu Tue Jul 6 11:04:35 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 6 Jul 2010 11:04:35 -0700 Subject: Comment stsetch2 SNF 2010-06-24 11:16:38: Update Message-ID: Archived From mcvittie at snf.stanford.edu Thu Jul 8 18:14:02 2010 From: mcvittie at snf.stanford.edu (mcvittie at snf.stanford.edu) Date: Thu, 8 Jul 2010 18:14:02 -0700 Subject: Shutdown stsetch2 SNF 2010-07-08 18:14:01: STS2- Calibrating PhaseMag Detector Message-ID: System should back up by Friday afternoon. Jim From shott at snf.stanford.edu Mon Jul 12 14:11:28 2010 From: shott at snf.stanford.edu (shott at snf.stanford.edu) Date: Mon, 12 Jul 2010 14:11:28 -0700 Subject: Comment stsetch2 SNF 2010-07-12 14:11:28: Cover for LF supply pulse generator. Message-ID: It was suggested that we should get a cover for the pulse generator that controls the on/off time of the LF power supply to prevent accidental bumping of this pulse generator. It lives in the basement in the main stsetch2 control panel and is at about knee level in a narrow aisle where it could easily be bumped. I've added a rackmount, lockable cover to this. The key is hanging on a little nylon "hook" on the right side of the panel that is above the pulse generator. John From mcvittie at snf.stanford.edu Tue Jul 13 14:05:36 2010 From: mcvittie at snf.stanford.edu (mcvittie at snf.stanford.edu) Date: Tue, 13 Jul 2010 14:05:36 -0700 Subject: Shutdown stsetch2 SNF 2010-07-08 18:14:01: STS2- Calibrating PhaseMag Detector Message-ID: This calibration has reduced the reflected power during switched processes, which should help the drop out problem but the reflected power is higher for the unswitched processes. When using the electromagnet for short switching time processes, such as 2s/3s, the pre-set settings for the coil matching are critical to avoid dropouts. If you are having problems with using the electromagnet, increase the dep time, improve the pre-set tuning and load settings and then reduce the dep time. To reduce the sensitive to the pre-set match settings, I will need to retune the PhaseMag Detector again using higher power levels and allowing the detector to heat up before tuning. Before doing this, I would like to see how the system runs for a while. Jim From mtan at snf.stanford.edu Fri Jul 16 12:40:00 2010 From: mtan at snf.stanford.edu (mtan at snf.stanford.edu) Date: Fri, 16 Jul 2010 12:40:00 -0700 Subject: Problem stsetch2 SNF 2010-07-16 12:40:00: PMC1 alarm Message-ID: Tried approved recipe Jim-smooth shallow. The coil aborted in less than two minutes from PMC1 alarm, which specifies that the coil power fell below the set point. Aborted and retried again resulted in the same repeated problem. The power reached was 663W. From jjeong1 at snf.stanford.edu Fri Jul 16 15:35:48 2010 From: jjeong1 at snf.stanford.edu (jjeong1 at snf.stanford.edu) Date: Fri, 16 Jul 2010 15:35:48 -0700 Subject: Problem stsetch2 SNF 2010-07-16 15:35:47: Same problem Message-ID: I had the same problem as Mike had above. Yesterday, it worked fine, but today, 13.56Mhz coil FW power fell below the alarm level and the process was aborted. From mcvittie at snf.stanford.edu Fri Jul 16 19:37:02 2010 From: mcvittie at snf.stanford.edu (mcvittie at snf.stanford.edu) Date: Fri, 16 Jul 2010 19:37:02 -0700 Subject: Shutdown stsetch2 SNF 2010-07-16 19:37:01: STS2 Shutdw to Calibrate PhaseMag Detector Over Full power Range Message-ID: Hi, I have already completed this measurement. I am finding that the zeroing of the magnitude detector changes with power level while the phase detector does not show this power dependence. This appears to explaing why the matching is different at low and high power levels. I am going keep the tool down for a day while I look at these detectors in more detail. Jim From mcvittie at snf.stanford.edu Mon Jul 19 18:40:21 2010 From: mcvittie at snf.stanford.edu (mcvittie at snf.stanford.edu) Date: Mon, 19 Jul 2010 18:40:21 -0700 Subject: Shutdown stsetch2 SNF 2010-07-16 19:37:01: STS2 Shutdw to Calibrate PhaseMag Detector Over Full power Range Message-ID: Calibrated Phase and Magnitude RF sensors from 500W to 3000W. Found pot (VR2) setting for zero magnitude detector setting varies by 700 ohms out of 10Kohms over power range. Phase pot (VR1) varies by 250 ohm when zeroed using 50 ohm load over power range, but there is a 3500 ohm (7 turns) offset to actually get good matching. This offset is not seen for the magnitude detector. Will look at match controller PCB, to find source of offset. I was able to run all the recipes, which I tried, without dropouts provide I use previously determined tune and load pre-set values and did an O2 clean process before the test. The O2 process sets the before run tune and load settings. The recipes tested includes SOI and with and without the electromagnet. Jim From rostam at snf.stanford.edu Tue Jul 27 12:25:19 2010 From: rostam at snf.stanford.edu (rostam at snf.stanford.edu) Date: Tue, 27 Jul 2010 12:25:19 -0700 Subject: Shutdown stsetch2 SNF 2010-07-27 12:25:18: turbo pump died Message-ID: From eenriquez at snf.stanford.edu Tue Jul 27 13:08:40 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 27 Jul 2010 13:08:40 -0700 Subject: Comment stsetch2 SNF 2010-07-27 13:08:38: Update turbo Message-ID: Restarted the turbo. The alarm log indicates that the foreline pump turned off. Still need to test under load. From eenriquez at snf.stanford.edu Tue Jul 27 14:59:51 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 27 Jul 2010 14:59:51 -0700 Subject: Shutdown stsetch2 SNF 2010-07-27 12:25:18: turbo pump died Message-ID: Runs OK under load. From eenriquez at snf.stanford.edu Tue Jul 27 15:00:08 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Tue, 27 Jul 2010 15:00:08 -0700 Subject: Comment stsetch2 SNF 2010-07-27 13:08:38: Update turbo Message-ID: Archived From mislam at snf.stanford.edu Tue Jul 27 23:28:51 2010 From: mislam at snf.stanford.edu (mislam at snf.stanford.edu) Date: Tue, 27 Jul 2010 23:28:51 -0700 Subject: Problem stsetch2 SNF 2010-07-27 23:28:50: Recipe Message-ID: It seems all approved "Smooth Shallow" recipes disappeared. Only SOI and other test recipe remains. Is all "smooth shallow" processes outlawed? From eenriquez at snf.stanford.edu Thu Jul 29 09:23:46 2010 From: eenriquez at snf.stanford.edu (eenriquez at snf.stanford.edu) Date: Thu, 29 Jul 2010 09:23:46 -0700 Subject: Comment stsetch2 SNF 2010-07-29 09:23:45: Tested OK after power outtage Message-ID: