From anikak at snf.stanford.edu Sat Mar 1 08:23:41 2008 From: anikak at snf.stanford.edu (anikak at snf.stanford.edu) Date: Sat, 1 Mar 2008 08:23:41 -0800 Subject: Comment raith SNF 2008-03-01 08:23:39: load lock error Message-ID: recovered with james' help From shanewang at snf.stanford.edu Tue Mar 4 12:45:41 2008 From: shanewang at snf.stanford.edu (shanewang at snf.stanford.edu) Date: Tue, 4 Mar 2008 12:45:41 -0800 Subject: Problem raith SNF 2008-03-04 12:45:40: mo ebeam resist 495 5A Message-ID: From jwc at snf.stanford.edu Tue Mar 4 17:20:56 2008 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Tue, 4 Mar 2008 17:20:56 -0800 Subject: Problem raith SNF 2008-03-04 12:45:40: mo ebeam resist 495 5A Message-ID: From jwc at snf.stanford.edu Wed Mar 19 14:06:48 2008 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Wed, 19 Mar 2008 14:06:48 -0700 Subject: Shutdown raith SNF 2008-03-19 14:06:47: vacuum controller board failure Message-ID: system seemed to be operating normally and upon a load lock routine there was a major vacuum controler board mal-function. Checking sub-systems before attempting to restart system. JWC From jwc at snf.stanford.edu Wed Mar 19 16:28:17 2008 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Wed, 19 Mar 2008 16:28:17 -0700 Subject: Shutdown raith SNF 2008-03-19 14:06:47: vacuum controller board failure Message-ID: We had a very unusual event in the lab today. The event occurred at 13:14 hours and I was in the SNF Ebeam lab at the time. LEO server indicated a vacuum connection failure to sensors in the vacuum control card. Raith was called for further phone and troubleshooting support at 13:57 hours. Upon checking sub-systems interlocked to the vacuum controler board it was determined that water flow had been interupted sourced from the NESLAB chiller. Appears to be a manual trip of the power switch on the neslab chiller unit. It is unlikely that this was a overcurrent breaker trip as it was found not to need to be reset just repowered to 'on'. I could not reproduce this failure this afternoon. System is now up -- pumped down and I just brought the gun back up. Available for the next user in the Coral queue at this time. System load lock, mechanical and turbo pumps, switch and relay interlocks to the E/O and Vacuum controler cards have been tested. Chiller flow is well below specification at 0.2 lpm (spec is 2 lpm) I will request that raith engage this problem and find a longer term solution. James Conway From jwc at snf.stanford.edu Wed Mar 19 16:28:24 2008 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Wed, 19 Mar 2008 16:28:24 -0700 Subject: Comment raith SNF 2008-03-01 08:23:39: load lock error Message-ID: From jwc at snf.stanford.edu Wed Mar 19 16:28:31 2008 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Wed, 19 Mar 2008 16:28:31 -0700 Subject: Comment raith SNF 2008-02-26 14:19:04: elevated vibration and RFI levels are evident in SEM view Message-ID: