Subject: Raith Status Thursday at 6 PM.
From: James Conway <>
Date: Thu, 24 Apr 2008 18:21:04 -0700


Raith is up for all Users. Remains in yellow light mode of coral until I have finished with the XY Stage measurements.
Beam waist at 10 keV 30 um aperture is ~ 1.4 nm.
FE-Gun emission level is 30% lower than it was before I had to shut down the gun to perform the repairs yesterday.  This should improve and I will make adjustments at the end of the week.

Standard Sample holder delta WD across 90 mm axis is ~0.35 mm which is less than before we had the stage problem.

Universal sample holder will need to be adjusted after piezo post calibrations and further measurements.
Electrostatic Chuck will also need to be measured several times and mechanically adjusted.

My plan is to finish the week performing height and tilt measurements and then early next week come to a decision to perform more shimming or mechanical adjustments to the stage supports and piezo post that support the kinetic mounts before attempting to adjust the stages.  I am approaching cautiously as this is very critical work which will have a decided effect of EBL write quality.

Thanks to the Users whom have been providing measurements from their samples.  These are very helpful.

Good Evening,

James Conway

-------- Original Message --------
Subject: Users will need to use the Faraday Cup on stage and not Faraday cup on sample holder
Date: Mon, 21 Apr 2008 12:24:09 -0700
From: James Conway <>
Organization: Stanford Nanofabrication Facility - Stanford University
To: Raith SNF Mailing list <>,

Good Afternoon RAITH Users,

Minor problems encountered this afternoon
Users will need to use the Faraday Cup on Stage and not Faraday cup on sample holder to measure beam current today.
The last User reported a problem reading current to the std. sample holders Faraday Cup and we are currently troubleshooting this issue. 
I am starting late
at 1:30 PM on the system to allow the previous User time to complete her write due to the delay that just occurred to her session time.

Thank you for your support!

James Conway