From jwc at snf.stanford.edu Wed Nov 10 17:26:28 2004 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Wed, 10 Nov 2004 17:26:28 -0800 Subject: Problem raith SNF 2004-11-10 17:26:28: RAITH system reset after power failure/surge? Message-ID: Power surge or failure resulted in loss of vacuum and gun operations. system tripped into 'save itself' shutdown mode and gun isolated but the chamber came up to ~ 500 mT range. Expect to be able recover and bring back the gun to normal values. Four to five hours to reach suitable vacuum at best. all User access and use suspended through 2200 hours this evening. I may take up to 24 hours for beam conditions to stabilize. Full update at 9:30 AM Thursday. JWC From jwc at snf.stanford.edu Wed Nov 10 19:06:21 2004 From: jwc at snf.stanford.edu (James Conway) Date: Wed, 10 Nov 2004 19:06:21 -0800 Subject: RAITH status as of 1850 hrs. WED. NOV. 10, 2004 -- system off line this evening after Power Surge. Message-ID: <4192D72D.9060605@snf.stanford.edu> Hello Raith Users: previously posted to raith-pcs at ~1750 hours: Power surge or failure resulted in loss of vacuum and gun operations. system tripped into 'save itself' shutdown mode and gun isolated but the chamber came up to ~ 500 mT range. Expect to be able recover and bring back the gun to normal values. Four to five hours to reach suitable vacuum at best. All User access and use suspended through 2200 hours this evening. I may take up to 24 hours for beam conditions to stabilize. Full update at 9:30 AM Thursday. JWC Update as of 1850 hours this evening: LEO SEM on RAITH 150: I have been busy bringing up the vacuum system and verifying computer interfaces on the LEO are working properly. While I have the main system chamber mechanical pump pumping and the Turbo pump has come up to speed with the pressure below the 6.0 E -006 Torr set point; I am still waiting for the ion pumps to the gun to start. This appears to be possibly hung up or delayed in initiating. Id have seen this before so I expect the Ion pumps to start sometime later this evening and bring down the vacuum down in the gun area so we can restart the FE-GUN. Zeiss was contacted and I left a message, I have not yet received a response so far -- expect a call first thing in the morning east coast time. (6 AM) I would expect we will be off-line through tomorrow noon if I cannot get the ion pumps to start on their own. RAITH Computer: The power failure severely fragmented the C drive and I had difficulties bringing the operating system back up. I booted off an emergency disk and found the fragmented C Drive. I am now defragmenting the drive and this could take several hours or more. Please do not interrupt this operation. I will check on the system later this evening. Next user in the lab after 8 PM please give me a call on my cell. Thank you for your support! James Conway 415-412-4825 -------------- next part -------------- An HTML attachment was scrubbed... URL: From jwc at snf.stanford.edu Thu Nov 11 13:17:12 2004 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Thu, 11 Nov 2004 13:17:12 -0800 Subject: Problem raith SNF 2004-11-10 17:26:28: RAITH system reset after power failure/surge? Message-ID: From jwc at snf.stanford.edu Tue Nov 16 19:23:45 2004 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Tue, 16 Nov 2004 19:23:45 -0800 Subject: Problem raith SNF 2004-11-16 19:23:45: 20 um aperture blanking leakage has increased Message-ID: Greetings: While on the 20 um aperture I observed that the RAITH blanker leakage has increased from 0.0005 nA to a average value of 0.0017 nA and is now out of RAITH specifications. Emission and SE features observed on stage moves when RAITH is blanked. LEO blanker is fine and no problems. JWC 11612004:1926 hours From jwc at snf.stanford.edu Fri Nov 19 13:47:23 2004 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Fri, 19 Nov 2004 13:47:23 -0800 Subject: Problem raith SNF 2004-11-16 19:23:45: 20 um aperture blanking leakage has increased Message-ID: not resolved but less critical than initially thought based on user feedback and writing results. Leakage and emission levels remian the same... JWC' From arvind at snf.stanford.edu Sun Nov 21 08:34:59 2004 From: arvind at snf.stanford.edu (arvind at snf.stanford.edu) Date: Sun, 21 Nov 2004 08:34:59 -0800 Subject: Problem raith SNF 2004-11-21 08:34:58: Align Writefield Message-ID: The image acquisition on the raith side does not work when I tried to do the align writefield. Its not possible to do the align writefield. From jwc at snf.stanford.edu Mon Nov 22 15:46:00 2004 From: jwc at snf.stanford.edu (jwc at snf.stanford.edu) Date: Mon, 22 Nov 2004 15:46:00 -0800 Subject: Problem raith SNF 2004-11-21 08:34:58: Align Writefield Message-ID: I was able to get the system back up after injecting 2 volt signal into the raith card. Upon examining leolog.log found Buffer 1LUT had been lost. replaced from back up file on LEO and reset LEO computer and all is now A-OK. From jwc at snf.stanford.edu Mon Nov 22 16:08:41 2004 From: jwc at snf.stanford.edu (James Conway) Date: Mon, 22 Nov 2004 16:08:41 -0800 Subject: RAITH IS BACK UP!! =>README. Message-ID: <41A27F89.5000802@snf.stanford.edu> Greetings Raith Users: The system has been returned to a usable state and the interfaces have been tested. All Write Field alignment issues appear to be resolved. I determined that some buffer named Buffer 1 LUT (Look Up Table) on the LEO side, presumably a table of gray scale values had been lost on the system. (Never even heard of this buffer before!) Was able to recover the file on a complete computer hardware reset and all is normal again. Image acquisition card and the ELPHY also were tested by injecting 0.2 to 2.0 Volt DC signal into the Image acquisition section of the ELPHY + and found no problems on the RAITH side. Let see how the next 24 hours goes... For the aid to the users whom canceled or lost their session(s) due to this downtime event since early AM Sunday -- I have removed my entire reservation Queue on CORAL for this week and the overnight reservation from 1300 WED. to 1500 Thursday (Thanksgiving) is now available. All users are requested to allow these users access this evening to make a reservation in that time slot before everyone else grabs those reservations which may remain Tuesday morning 6 AM onwards. Thank you for your support! James Conway Re: Problem raith SNF 2004-11-21 08:34:58: Align Writefield To the Raith-pcs clear list a few minutes ago: I was able to get the system back up after injecting 2 volt signal into the raith card. Upon examining leolog.log I found Buffer 1 LUT had been lost at 0400 hours Sunday morning. recovered file on Reset of LEO computer and all is now A-OK. The system and WF alignment has been tested and Kab Qyu Youn is running a test exposure to confirm everything is still as it should be normally.