Subject: Raith down through 4 PM tomorrow.
From: James Conway <>
Date: Wed, 25 Feb 2004 19:45:50 -0800


To effect repairs to the Gun section to eliminate the arcing events we 
encountered we had to break vacuum, clean the bore and FE-Gun assembly.  
We found a rather shocking carbon deposit on the side of the insulator 
possibly from an arc in this area.

We are now starting to bake out the gun section of the column and hope 
to bring the platform back up on line tomorrow afternoon for users 
access about 4 PM.  If this doesn't eliminate all problems we must them 
replace the tip and could be down through early next week. 

Only after this problem has been addressed will we replace the Electron 
Optics board that was damaged by the arc event last night.

Please stand by for further updates as the situation progresses.

Thank you for your support!

James Conway