From: Paul
Date: Mon, 14 Oct 2002 07:53:06 +0100
Subject: Re: [TSSP] Top Voltage
Bart wrote: > Fres = 238kHz (gap open) > Upper Mode = 248kHz (gap closed) > Lower Mode = 206kHz (gap closed) > f3 = 832kHz (gap open) > f3 = 846kHz (gap closed) Very nice agreement on these measurements. No problems there. > I seem to be breaking out at lower V&I than expected. > The gap = 2 sphere electrodes at 1.2522" diameter spaced > at 0.1" = 7.228kV (North) Well that makes a pleasant change :) We've got lots of things that can account for an early breakout. Your previous set of data from the cmod page showed definate breakout by 26kV/cm. Base current peak is consistent with the firing voltage. I'll study this lot today and try to set up a summary web page for all these results. Your k factor is a little higher than modeled so I'll try to get to the bottom of that. > Al corregated flex tube with Al tape to smooth Maybe that's a factor. Lots of factors available to account for a low breakout, so no problem, I think. Cheers, -- Paul Nicholson, --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.