Subject: [Fwd: Problem raith SNF 2004-11-16 19:23:45: 20 um aperture blanking leakage has increased]
From: James Conway <jwc@snf.stanford.edu>
Date: Tue, 16 Nov 2004 19:33:01 -0800

RAITH Blanker leakage issues continue. See report below or click here.

Not so good for those people writing within one writefield for a long period of time.

Time for the FE-gun replacement.

more in the afternoon tomorrow!

JWC


-------- Original Message --------
Subject: Problem raith SNF 2004-11-16 19:23:45: 20 um aperture blanking leakage has increased
Date: Tue., 16 Nov. 2004 19:23:45 -0800
From: jwc@snf.stanford.edu
To: raith-pcs@snf.stanford.edu


Greetings:
While on the 20 um aperture I observed that the RAITH blanker leakage has increased from 0.0005 nA to a average value of 0.0017 nA and is now out of RAITH specifications.
Emission and Secondary Electron features observed on stage moves when RAITH is blanked.  LEO blanker is fine and no problems.
JWC 11612004:1926 hours