Superconducting accelerator cavity with a heat affected zone hav

Details Superconducting accelerator cavity with a heat affected zone hav Superconducting accelerator cavity with a heat affected zone hav

1998-11-02

2000-08-01

Bettendorf, Justin P.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

333995, 505866, 21912163, H05H 900

Patent

active

060971533

ABSTRACT:
An improved method for welding accelerator cavities without the need for time consuming and expensive faying surface treatments comprising electron beam welding such cavities in a vacuum welding chamber within a vacuum envelope and using the following welding parameters: a beam voltage of between about 45 KV and 55 KV; a beam current between about 38 ma and 47 ma; a weld speed of about 15 cm/min; and a sharp focus and a rhombic raster of between about 9 KHz and 10 Khz. A welded cavity made according to the method of the present invention is also described.

REFERENCES:
patent: 5239157 (1993-08-01), Sakano et al.
patent: 5347242 (1994-09-01), Shimano et al.

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