From mtang at stanford.edu  Thu May  7 15:04:47 2009
From: mtang at stanford.edu (Mary Tang)
Date: Thu, 07 May 2009 15:04:47 -0700
Subject: HBr update
Message-ID: <4A035AFF.9090807@stanford.edu>

Hi all HBr users --

As you probably know, HBr is unavailable.  The problem is not with HBr, 
lines or equipment.  The problem is the toxic gas sensor in the HBr 
cabinet, which is exhibiting a lot of noise.  There are plans in place 
to replace this unit, but this will require a non-trivial upgrade (no, 
it's not plug and play.)  We trust it will not be on the order of weeks, 
but will have a better idea of timeline tomorrow, when contractors come 
to evaluate and start the job.  It would safe to say, I think, that HBr 
will not be available this weekend, but if all goes well, we hope to 
have it next week.  I hope we'll have more info for you tomorrow.

Mary

-- 
Mary X. Tang, Ph.D.
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
(650)723-9980
mtang at stanford.edu
http://snf.stanford.edu



From mtang at stanford.edu  Fri May  8 09:53:47 2009
From: mtang at stanford.edu (Mary Tang)
Date: Fri, 08 May 2009 09:53:47 -0700
Subject: HBr Update (lampoly/p5000etch)
Message-ID: <4A04639B.4060304@stanford.edu>

Hi all,

Just a quick update, as promised, on HBr --  As you know, HBr is 
unavailable because the toxic gas sensor in the HBR cabinet in the gas 
vault is faulty.  (For safety reasons, we cannot run without a 
functioning gas sensor.)  The gas detector replacement is planned for 
Monday, 5/11.  If the sensor head also arrives on Monday, as we hope, 
testing of the system is planned for Tuesday and Wednesday.  If all goes 
as well as planned, then we should have HBr back on Wednesday.  We 
apologize for the inconvenience, but please continue to bear with us as 
we work on these safety concerns.

Your SNF Staff

-- 
Mary X. Tang, Ph.D.
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA  94305
(650)723-9980
mtang at stanford.edu
http://snf.stanford.edu