[Sneap] Focus resistor, Pd leak on AN2500

[sergio at vdg.fis.puc-rio.br]

Dear Stuart

Did you check the impedance (using electrometer - it must be > 10E10 ohms) of the 
focus plate to possible fugue?
This resistor in question is only to limit the maximum current of the high voltage power 
supply. The resistor you replaced (5W-20KV) is correct to use in this case. 
We use thermoleak to both - Hidrogenio and Helio - in the ion source without problems.
Good luck.

Sergio M. Xavier - Eng
Lab Van de Graaff.
PUC-RJ - Brasil.  




Date sent:      	Fri, 28 Sep 2007 09:08:25 -0600
From:           	"Van Deusen, Stuart B" <sbvande at sandia.gov>
To:             	SNEAP at tunl.duke.edu
Subject:        	[Sneap] Focus resistor, Pd leak on AN2500
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