Any info available on Vacuum Gaps?

• To: tesla-at-pupman-dot-com
• Subject: Any info available on Vacuum Gaps?
• From: "Dan" <dkrones-at-home-dot-com> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
• Date: Thu, 29 Oct 1998 11:24:59 -0700
• Approved: terryf-at-verinet-dot-com

Any info available on Vacuum Gaps?

By "vacuum gap", I mean a spark gap where the gap itself is literally
contained within a vacuum.  Typically the terminals are very close (.001" -
.005").  One of the 2 electrodes is adjustable for fine tuning the gap
distance.

The challenges I see are how to adjust an electrode without breaking the
vacuum (perhaps a bellose of some kind).  How to electrically insulate the
terminals.  How to provide adequit heat sinking for the terminals.

I have read that vacuum gaps are the best kind to use.  Better than
multi-pole staionary gaps, better than air-quenched gaps, better than
rotary gaps.

Does anyone have any information on this (in support of or against)?

Does anyone have any plans or suggestions on how to build one?
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