15.75 in

quick check of fields in a test structure – design will be improved

A Ross Engineering Toroidwater jetted plate

ground planeshaped button cable connection electrode

20 kV bias

~5.6 cm

read C/cm as kV/cm

Tipped toroid connection

top of 3/8 in plate ¾ in below toroid center

plate to floor 5.3 cm

tipped toroid connection

can raise toroid to equalize field on disk with plate corner

6 in radius sphere section

3/8 inch high

1/8 inch hole fillet radius .02 inch

Hot spot is on disk edge for this case with top 7/8 inch below toroid center

Ross Engineering T201 toroid

21 inch outside diameter3 inch diameter ring

The T201 is rated for 200 kV

This is a check of this design to see what field they are running with a 200 kV rating.

Calculate the field with toroid far from ground boundaries with a 200 kV bias

The potential is shown here.

The field strength is shown here.

The maximum field on the surface of the toroid is 20 kV/cm with a 200 kV bias. This is 2/3 of the breakdown field in air.

Ross Engineering T201 toroid biased to 200 kV