Subject: Comment raith SNF 2006-07-14 13:05:56: System tested to 15 kV today. Users restricted to BELOW 15 KV ACC. VOLTAGE
From: jwc@snf.stanford.edu
Date: Fri, 14 Jul 2006 13:06:00 -0700

GREETINGS:
Today we tested the RAITH to 15 kV with no problems encountered and maintaining excellent
Gun section vacuum (4.6 E-010 Torr. EHT ON at 15 kV.
Increasing the limits in operation of FE-GUN up to 15 kV for all Users.
Higher acceleration voltages will be tested end of next week.
All Users are requested to pre-bake all their previously coated samples on a hotplate
above 90 degrees C before loading. Please ensure that no oils, greases, waxes, or other
contaminants remain on your samples when you place them into the system.
Beam diameter at 10 kV 5 mm WD = 1.48 nm and at 15 kV it is less than 1 nm.  
Thank you for your support!
James