From: Paul
Date: Thu, 31 May 2001 18:41:31 +0100
Subject: Re: [TSSP] Secondary in motion
The grossly overcoupled case. Secondary voltage (1.4Mb) in http://www.abelian.demon.co.uk/tssp/tfsm3-p-k=0.35.mpeg Secondary voltage gradient (1.7Mb) in http://www.abelian.demon.co.uk/tssp/tfsm3-pdv-k=0.35.mpeg 31uS duration in each. Waveform plots in http://www.abelian.demon.co.uk/tssp/tmp/tplot.12907.out.gif based on 100V firing voltage, and the mode shapes are plotted in http://www.abelian.demon.co.uk/tssp/tmp/tplot.13123.gif The FSD of the dV/dx movie is 675 volts/turn, was only 425 volts/turn for the previous charts. The peak gradient is now 665 V/turn, compared with only 410 V/turn for the lower k setups. Note that the ultimate peak topvolts is no higher with the high k coupling, so we haven't gained anything. In order to contrive a primary which matched the Lp of the earlier runs, I had to switch to a cylindrical, radius 8cm, length 14cm, base level with base of secondary. turns 11.3. Stronger mode 3 compared to the other two. Peak gradient is at 9.75uS, frame 33, 7.5% height. In the mode plot, note the big difference in the shape of modes 1 & 2 in the region covered by the primary. That difference appears to be the cause of the high level of mode 3 excitation. More to follow later, time for Tea. Cheers, -- Paul Nicholson, Manchester, UK. --
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.