From: Paul
Date: Sat, 11 May 2002 00:47:53 +0100
Subject: [TSSP] Topload breakout potentials
Hi All, There's still some more work to do on the stress factor tables but I thought I'd mention the next job lined up for Terry's computer. The capacitance program tcap has been extended to calculate the surface potentials around the topload(s). For each toroid and sphere it identifies the the highest surface gradient on the electrode and reports the value in units of kV/cm per kV of topvolts, or V/cm/V if you like. I'm trying to get a handle on the accuracy but it will likely be around 5%. This can be run for either isolated toploads, or for toploads atop a particular coil, in which case the gradients are the in-situ gradients of the topload. Terry, I'd like to set your computer onto the task of computing a table of these values, for a range of toroid sizes and coil sizes, if that's ok? I suspect that we'll find that the highest gradient on the topload won't be very dependent on the secondary size. If this hypothesis turns out to be the case, then we can construct a fairly accurate table of breakout voltages (assuming say 26kV/cm as the threshold) for a range of toroid sizes. If such a table could be validated against reports of real coils, then we would have a means of calculating an optimum toroid size for a given coil and bang size. Just needs a bit of thought on how to arrange the table. Do folk usually describe toroids by a tube diameter and an outer diameter? -- Paul Nicholson, --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.