Shutdown raith: Gun problems -- Bake out likely will be repeated...
jwc at snf.stanford.edu
Fri Feb 20 11:20:02 PST 2004
Problems were encountered with the FE-Gun emission almost as soon as we
began writing on the system yesterday evening.
Beam I was reduced by 50% is just two hours of write time. It may have
been a mistake on my part for opening system access to users until the
FE-tip had run in for a suitable period of time before running it in
write mode. I had wanted to get you all back on the system ASAP.
Likely we will need to repeat some of the PM items to eliminate
contamination in the gun area, bake the system out over the weekend, and
then set up and run in the FE-tip again.
I have placed the Raith system into RED light mode and there will likely
be no access through next Tuesday afternoon.
I will immediately post to the list if this situation changes so leave
your reservation in place on CORAL and check for green or yellow light
status later today.
I am sorry if you were impacted negatively by the current situation.
-------- Original Message --------
Subject: Shutdown raith 2004-02-20 09:27:08: Gun problems Bake out
likely will be repeated...
Date: Fri, 20 Feb 2004 09:27:09 -0800
From: jwc at snf.stanford.edu
To: raith-pcs at snf.stanford.edu
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