Accession Number : ADD015110
Title : Optically Powered Charged Particle Accelerator.
Descriptive Note : Patent,Filed 28 Jun 90, patented 17 Sep 91,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Flesner, Larry D
Report Date : 17 Sep 1991
Pagination or Media Count : 7
Abstract : A charged particle control apparatus provides very high voltage particle beams. One or more photocell arrays provide bias voltages for beam accelerating stages. The arrays are made from a number of microfabricated photocells connected in series to produce a voltage output that is the sum of the voltages from the individual cells. Arrays of each stage are connected in series to produce a cumulative stage voltage that is applied to an accelerating electrode made part of the stage. Optical power illuminates the stages to generate desired voltage biases to the accelerating electrodes. A light source is used to excite the photocathode when this emission source is used. Electrons from the emission source are accelerated electrodes and are emitted from the chamber which is typically conjoined with other apparatus. By utilizing photocell arrays to generate beam current and accelerating biases, as well as a photocathode for providing a source of electrons, the apparatus of the invention is completely optically isolated thereby requiring no direct electrical connections to the apparatus even though multiple accelerating stages are used to facilitate the achievement of very high voltage particle beams.
Descriptors : ACCELERATED TESTING, ARRAYS, BIAS, CHARGED PARTICLES, CONTROL, ELECTRIC CONNECTORS, ELECTRODES, ELECTRONS, EMISSION, INVENTIONS, LIGHT SOURCES, OPTICAL PROPERTIES, OUTPUT, PHOTOCATHODES, PHOTOELECTRIC CELLS(SEMICONDUCTOR), POWER, SOURCES, VOLTAGE
Subject Categories : Particle Accelerators
Electric Power Production and Distribution
Distribution Statement : APPROVED FOR PUBLIC RELEASE