From cmfaulkn at snf.stanford.edu  Thu May 11 13:27:37 2006
From: cmfaulkn at snf.stanford.edu (Carl Faulkner)
Date: Thu, 11 May 2006 13:27:37 -0700 (PDT)
Subject: wafers left in LHS dump rinser
Message-ID: <Pine.LNX.4.04.10605111326340.14738-100000@snf.stanford.edu>

If these are yours - please remove them.  



From pethe at elaine1.Stanford.EDU  Sat May 13 18:27:44 2006
From: pethe at elaine1.Stanford.EDU (Abhijit Pethe)
Date: Sat, 13 May 2006 18:27:44 -0700 (PDT)
Subject: Toxic Gases shutdown
Message-ID: <Pine.GSO.4.44.0605131818190.26575-100000@elaine1.Stanford.EDU>


Hi,

We had an alarm at the SNF Saturday 4:00pm. The alarm is clear but the
toxic gases are off and need to reset by staff. FYI.

Thanks
Abhijit







From jhaydon at stanford.edu  Thu May 25 16:46:15 2006
From: jhaydon at stanford.edu (Jim Haydon)
Date: Thu, 25 May 2006 16:46:15 -0700
Subject: Shut down for dump rinser change
Message-ID: <447641C7.2080003@stanford.edu>

The Diffusion wet bench will be shut down from 5 /31 through  6/1 for 
the installation of new dump rinsers. For questions about options 
contact Nancy Latta.

Jim H





From rwoo at stanford.edu  Sun May 28 09:03:06 2006
From: rwoo at stanford.edu (Raymond Woo)
Date: Sun, 28 May 2006 09:03:06 -0700
Subject: wbdiff temperature settings
Message-ID: <4479C9BA.4060204@stanford.edu>

A word of warning to those who were planning on using wbdiff this 
weekend - the temperature settings for both hot pots has been set to 
60C, and, as far as I can tell, can't be changed back to their normal 
settings by regular users. 60 degree piranha is obviously not sufficient 
to clean wafers, so until this problem is fixed I think the only way to 
do a diff clean is to change the chemicals and allow them to self heat.

But the hot pot maximum drain temperature has also been changed to 50C. 
I accidentally turned on the heater first, and after waiting a full hour 
the temperature had only dropped from 60C to 55C so I gave up and went home.

- Ray


From sarves at stanford.edu  Sun May 28 09:18:37 2006
From: sarves at stanford.edu (Sarves Verma)
Date: Sun, 28 May 2006 09:18:37 -0700
Subject: wbdiff temperature settings
In-Reply-To: <4479C9BA.4060204@stanford.edu>
References: <4479C9BA.4060204@stanford.edu>
Message-ID: <1148833117.4479cd5d5165a@webmail.stanford.edu>

Well I worked yesterday morning and evening too, the sulphuric acid one's
temperature was going upto 75C(and not 60C, the usual temp being 90C),
however the higher limit of H2O2/HCl has been fixed to 60C (the normal
being 70C)

Also, the time settings have been changed to 0.2 seconds which also cant be
changed.


 temperature fixed to  one Quoting Raymond Woo <rwoo at stanford.edu>:

> A word of warning to those who were planning on using wbdiff this
> weekend - the temperature settings for both hot pots has been set to
> 60C, and, as far as I can tell, can't be changed back to their normal
> settings by regular users. 60 degree piranha is obviously not sufficient
> to clean wafers, so until this problem is fixed I think the only way to
> do a diff clean is to change the chemicals and allow them to self heat.
>
> But the hot pot maximum drain temperature has also been changed to 50C.
> I accidentally turned on the heater first, and after waiting a full hour
> the temperature had only dropped from 60C to 55C so I gave up and went
> home.
>
> - Ray
>




From shott at stanford.edu  Sun May 28 09:59:19 2006
From: shott at stanford.edu (John D Shott)
Date: Sun, 28 May 2006 09:59:19 -0700
Subject: Reset temperature settings ....
Message-ID: <1148835559.4479d6e7e032d@webmail.stanford.edu>



wbdiff users:

I've reset the temperature and time of the H2SO4/H2O2 hotpot to 90C and 10
minutes and the HCl/H2O2 hotpot to 70C and 10 minutes.  That may not be
perfect .. but it should get you back on the air.

The hot pots still have to be cooled to 50C for the drain to work.  I'm not
completely sure what that should be set to.

Ho[efully,, this will at least get you back on the air.

John

If anyone knows what the drain temperature should be set at, let me know,
and I'll try to get it changed ...



From maurice at stanford.edu  Tue May 30 13:50:05 2006
From: maurice at stanford.edu (Maurice Stevens)
Date: Tue, 30 May 2006 13:50:05 -0700
Subject: Tomorrow and Thurs: wbdiff cleans at wbsilicide
Message-ID: <447CAFFD.60506@stanford.edu>

?Wbdiff? is slated to be upgraded tomorrow starting at 6:00am.

?Wbsilicide? will serve as the backup until wbdiff is functional again on thur.

Wbsilicide will be decontaminated this afternoon (~5:00pm) and will be 
unavailable for use as a semiclean station or for decontamination until 
wbdiff is back to general use.

-- 
maurice at stanford.edu

Maurice Stevens
Stanford Nanofabrication Facility
CIS Room 142, Mail Code 4070
Stanford, CA  94305
P. (650)725-3660
F. (650)725.6278