Re: Vacuum technology

I have heard the term vacuum quench gap, but what exactly would a 
vacuum quench gap do that an air-blast gap wouldn't and what are 
some construction details?  I have an old Sargent-Welch vacuum pump 
(like you would find in a high school), and I was wondering if that would 
give a hard enough vacuum or would I need some sophisticated (i.e. - 
expensive) vacuum system.

Steven Roys (sroys-at-radiology.ab.umd.edu)