From ahazeghi at stanford.edu Thu Sep 7 10:50:58 2006 From: ahazeghi at stanford.edu (Arash Hazeghi) Date: Thu, 7 Sep 2006 10:50:58 -0700 Subject: Vent valve Message-ID: Greetings, As you have noticed an additional N2 vent line has been added to the system which will automatically do a N2 purge when you vent the turbo, so please do not use the front vent valve anymore. Please also remember to write down the cool down time in the log book as this a clear indication of the performance of the system. Thanks, Arash ------------------------------------------------------------------------ -- Arash Hazeghi PhD Candidate Stanford Center for Integrated Systems, 420 Via Palou Mall, CIS-X 300 tel: 650-725-0418 mobile: 650-353-1866 http://www.stanford.edu/group/nanoelectronics/index.htm From ahazeghi at stanford.edu Mon Sep 11 12:07:02 2006 From: ahazeghi at stanford.edu (Arash Hazeghi) Date: Mon, 11 Sep 2006 12:07:02 -0700 Subject: Please fill in the log book completely Message-ID: Please fill in the cool down time in the log book, if it is overnight state overnight other wise state how long it takes for the system to cool down from room T to 77K or whatever the lowest temperature is. The purpose of log book is to monitor system performance so cool down time has to be recorded. Thank you, Arash ------------------------------------------------------------------------ -- Arash Hazeghi PhD Candidate Stanford Center for Integrated Systems, 420 Via Palou Mall, CIS-X 300 tel: 650-725-0418 mobile: 650-353-1866 http://www.stanford.edu/group/nanoelectronics/index.htm From ahazeghi at stanford.edu Tue Sep 12 20:56:34 2006 From: ahazeghi at stanford.edu (Arash Hazeghi) Date: Tue, 12 Sep 2006 20:56:34 -0700 Subject: Leaving system unattended Message-ID: Hello, I saw the system unattended with dewar pressure ~ 9PSI and foot valve open there was heavy forestation all the way up to the refrigerator bellows and to the transfer line collar, This hints the system has be cooling with full capacity for several hours. Like I have pointed out before forestation above exhaust port and down the transfer line fitting is not allowed. This will result in liquid overflow and spill of cryogenics in the lab. pressure might also go up causing the dewar to explode or transfer line to jet out...If you need to cool the system overnight make sure foot valve is open < 1/2 turn and pressure does not exceed 5PSI and there is no forestation. Next time I see the system unattended like this the corresponding user will be removed from Coral. Arash ------------------------------------------------------------------------ -- Arash Hazeghi PhD Candidate Stanford Center for Integrated Systems, 420 Via Palou Mall, CIS-X 300 tel: 650-725-0418 mobile: 650-353-1866 http://www.stanford.edu/group/nanoelectronics/index.htm From luckyyrl at gmail.com Wed Sep 20 00:23:49 2006 From: luckyyrl at gmail.com (Yuerui Lu) Date: Wed, 20 Sep 2006 00:23:49 -0700 Subject: Reservation cancelled this Wed and Thursday Message-ID: <9dc2cbc0609200023v462b1012ib6b8e886c479b0a@mail.gmail.com> Sample not ready. Sorry for late notice. -------------- next part -------------- An HTML attachment was scrubbed... URL: