TSSP: List Archives

From: "Malcolm Watts"
Date: Tue, 28 May 2002 14:28:55 +1200
Subject: Re: [TSSP] Topload breakout potentials

Hi all,
        I have been thinking some more about the possible forms a 
probe might take. My initial idea was to effectively pipe the HV out 
through the bottom of the coil. That approach might still be on but 
the issue of loading is probably going to cause more than desirable 
deviations in coil characteristics. So I have another which might 
eliminate the need for a central shield.

     Suppose the structure is graded such that it has a voltage 
profile matching that of the coil. Will that do it? Probably only 
only at Fr. If several probes having different gradings were made, 
comparisons could be done. Equalization along the probe's length 
might well be necessary but it would get us to the point of having to 
deal only with low voltages/currents at the base where it exits the 
coil form. And the shunt impedance could be made arbitrarily high. 

There is the nasty impication that we would measure what we expect to 
measure but different gradings might get around that problem if all 
shunt impedances are equal.

Any thoughts from anyone?

Malcolm


Maintainer Paul Nicholson, paul@abelian.demon.co.uk.