From: "Terrell W. Fritz"
Date: Thu, 10 Oct 2002 12:18:29 -0600
Subject: Re: [TSSP] Top Voltage
Hi,
At 09:40 AM 10/10/2002 -0700, you wrote:
>
> Bert wrote:
>>
>> Is the presence of the larger toroid "shielding" the
>> sphere, reducing
>> the effective E-field at its surface? This might
>> explain higher than
>> expected breakout voltage...
>>
>---
>This explains higher breakout voltage most definitely.
>First,I didn't know the position of Terry's small
>sphere was so close to toroid top (hm,hm, seems Terry
>changed something in arrangment while not informing us
>..)
I was really looking for Q issues not breakout. Breakout was sort of an after
thought here. I just have the coil's normal top on it without the current
sensor and such so the sphere was much lower. Sorry if that caused any
confusion.
We so take into account the field effects of the toroid and how it raises the
breakout on the sphere. Of course, it's nice if I manage to tell the
dimensions first ;-))
>
>Second,small sphere has higher critical surface field
>necessary for selfsustained air ionisation (> 30
>kV/cm).
>
>Taking in consideration all that and new software
>calculation for 190 kv (Emax~42 kv/cm) looks like we
>start blowing away breakout mysteries pretty well.
Yes, seems like there are mysteries in all this. I should be able to get back
at it tonight.
Cheers,
Terry
>
>regards,
>Boris
>
>
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