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200 kilovolt electrostatic particle accelerator
This is a 200 kV electrostatic particle accelerator that was at one point owned by the University of Wisconsin-Madison.
Legend says this accelerator was designed, and probably built by Ray Herb himself, an accelerator wizard and founder of National Electrostatics Corp.
At the UW, it was last used as an electron accelerator for early cross section research and student studies. We used it for a short while as a proton accelerator, before moving to a more modern design.
Accelerator has 16 or so sections, and is approx. 23" long. The internal bore is approximately 2" ID. Mating flanges are either obsolete or custom design. Accelerator is built strong and is well cantilevered, and can support a good bit of weight on the front cage, 100 pounds for sure, possibly more. The cage can easily be isolated from the accelerator with ceramic standoffs, allowing for an ion source filament supply to float at the injector voltage. It has an acrylic tube cover, sealed with o-rings. The acrylic is somewhat crazed from age, but not cracked or broken. When run on DRY nitrogen, this accelerator was operated up to 200 kV, and is said to operate comfortably at 250 kV in SF6. There are a few fans in the back to circulate nitrogen or SF6 gas and run it through a heat exchanger to remove heat from the gradient resistors.
The front cage has a large aluminum corona shield designed to cover it, which is included. Mounting rails for the shield will need to be made and reattached (aluminum angle bar stock is required).
Please, ask any questions you want. This is a great piece of scientific equipment, and it can be yours!
