From mihirt at stanford.edu  Sun Nov  4 20:39:58 2007
From: mihirt at stanford.edu (Mihir Tendulkar)
Date: Sun, 04 Nov 2007 20:39:58 -0800
Subject: Cascade vacuum problem (please read)
Message-ID: <20071104203958.zkhsbg3f34g0ks8c@webmail.stanford.edu>

All,

      Last week it was discovered that the Cascade has a vacuum  
problem for the 13mm piece setting (vacuum holes in the center of the  
chuck).

      The switch is broken and has been taped to maintain vacuum. DO  
NOT FLIP THE 13mm SWITCH OR REMOVE THE TAPE.

      The central holes have continuous vacuum due to the broken  
switch. I've placed a dummy wafer over the holes to stop the leak when  
the system is not in use. If you use the system, please put the dummy  
piece in the 3" holder next to the system (labeled SW10). When you are  
done measuring, please replace the dummy sample.

      I will contact the Cascade technician tomorrow. I don't know how  
long it will take to fix, so let's work together to keep it running in  
the meantime. Thanks.

-- 
Mihir Tendulkar
Applied Physics PhD Candidate
Nishi Group, Stanford University


From mihirt at stanford.edu  Wed Nov  7 18:51:22 2007
From: mihirt at stanford.edu (Mihir Tendulkar)
Date: Wed, 07 Nov 2007 18:51:22 -0800
Subject: [Cascade] Vacuum fixed, sort of
Message-ID: <20071107185122.jtq2pnlgf4cw48gs@webmail.stanford.edu>

All,

      Thanks to Jim McVittie's help, I narrowed the problem down to a  
bad seal. Problem is, I couldn't fix it myself, so I swapped out the  
problem switch for one of the AUX vacuum switches.

      The 13mm vacuum switch works properly again. DO NOT USE the AUX  
vacuum switches. I will contact Cascade to order a new one as soon as  
I can figure out who is going to pay for it. =)

-- 
Mihir Tendulkar
Applied Physics PhD Candidate
Nishi Group, Stanford University


From jennyhu at stanford.edu  Tue Nov 13 09:09:26 2007
From: jennyhu at stanford.edu (Jenny Hu)
Date: Tue, 13 Nov 2007 09:09:26 -0800
Subject: Today 5:30 - 9 PM Reservation Cancelled
Message-ID: <20071113090926.izvokmd3s4w4skok@webmail.stanford.edu>




From kimsangb at stanford.edu  Tue Nov 13 09:44:17 2007
From: kimsangb at stanford.edu (SangBum Kim)
Date: Tue, 13 Nov 2007 09:44:17 -0800
Subject: cascade free until 1PM
Message-ID: <001701c8261c$d0493ea0$a9b50c80@sangbumhome>

Got a later reservation today. Sorry for late notice.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://snf.stanford.edu/pipermail/cascade/attachments/20071113/bc69e9b3/attachment.html>

From tdo at stanford.edu  Tue Nov 13 12:38:06 2007
From: tdo at stanford.edu (tdo at stanford.edu)
Date: Tue, 13 Nov 2007 15:38:06 -0500
Subject: removed 3:30-5pm today
Message-ID: <20071113153806.ap72iwcys0wookso@webmail.stanford.edu>




From mihirt at stanford.edu  Tue Nov 27 11:04:26 2007
From: mihirt at stanford.edu (Mihir Tendulkar)
Date: Tue, 27 Nov 2007 11:04:26 -0800
Subject: Cascade free until 4 + temp controller down
Message-ID: <20071127110426.ul5kuihk74skc4w8@webmail.stanford.edu>

All,

      The Cascade is free until 4pm.

      The chiller is down (there may be a leak in the system), so  
please do not use it for now.

-- 
Mihir Tendulkar
Applied Physics PhD Candidate
Nishi Group, Stanford University


From mihirt at stanford.edu  Thu Nov 29 10:19:49 2007
From: mihirt at stanford.edu (Mihir Tendulkar)
Date: Thu, 29 Nov 2007 10:19:49 -0800
Subject: Cascade free until noon
Message-ID: <20071129101949.1e0blh01csss0gsg@webmail.stanford.edu>

Shifted my reservation. Sorry for the last-minute notice.

-- 
Mihir Tendulkar
Applied Physics PhD Candidate
Nishi Group, Stanford University