Electron beam window structure for broad area electron beam gene

Details Electron beam window structure for broad area electron beam gene Electron beam window structure for broad area electron beam gene

1975-06-25

1977-12-06

Rolinec, Rudolph V.

Electric lamp and discharge devices

Cathode ray tube

Electron permeable window

315 85, 313363, H01J 3300

Patent

active

040619443

ABSTRACT:
An electron beam window structure for broad area electron beam generators wherein a stream of electrons generated in an evacuated enclosure and extending over a broad area are passed through a thin window to a region of high pressure outside the enclosure. The structure is positioned between the metal window and the electron emission means of the electron beam generator and comprises a generally flat metal plate of high thermal conductance having closely spaced parallel slots extending over and covering the intended area of the electron beam. The bottom of each slot is disposed adjacent one surface of the plate and over its length and is provided with a row of closely spaced holes of the same diameter as the bottom width of the slot. The holes go through the remaining material leaving a small web between adjacent holes. The metal window is mounted on the slotted side of the plate while the side of the plate with the holes faces the emission means disposed in the evacuated enclosure. The plate preferably is provided with coolant flow passages for the continuous removal from the plate of significant amounts of heat generated by the impact of electrons on the plate and by electrons passing through the metal window.

REFERENCES:
patent: 3469139 (1973-09-01), Colvin
patent: 3588565 (1971-06-01), Trump
patent: 3788892 (1974-01-01), Van Raalte et al.

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