From: "Malcolm Watts"
Date: Tue, 28 May 2002 14:54:55 +1200
Subject: Re: [TSSP] Topload breakout potentials
Hello all, On 28 May 2002, at 14:28, I wrote (in a post a few minutes ago): > 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? Further to this, might we detect certain conditions relating to gradients, equalization etc. using some kind of bridge technique? Malcolm
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.