Apparatus for acceleration and application of negative ions and

Details Apparatus for acceleration and application of negative ions and Apparatus for acceleration and application of negative ions and

1988-04-26

1991-02-12

Wieder, Kenneth

X-ray or gamma ray systems or devices

Photographic detector support

Dental

378 34, 378 65, 313555, H05H 1304, G21K 500, A61N 510

Patent

active

049927469

ABSTRACT:
An apparatus for generating X-rays from electron synchrotron radiation or beams of accelerated ions for ion radiography or ion therapy includes a source of electrons and a source of ions, both of which are connectable to preaccelerators. The preaccelerators supply the appropriate type of charged particle to a synchrotron accelerator which accelerates ions to an energy level that is appropriate for radiography or therapy and which accelerates electrons to a level that generates X-rays by synchrotron radiation in a useful frequency range. The accelerator system also includes a storage ring into which particles are switched and circulated for later use. Electrons are extracted from the synchrotron and injected into the storage ring by fast extraction using a kicker magnet and a septum magnet. They then circulate in the storage ring for periods of hours generating X-rays which may be used for lithography of computer chips with submicron resolution. The energy loss because of this radiation is continuously replaced by a radio-frequency acceleration system. During the period that electrons are circulating in the storage ring, the synchrotron may be utilized to accelerate ions for ion radiography or ion therapy with beam extracted from the synchrotron by stripping extraction through thin foils. Other simultaneous uses for the ions or electrons from the preaccelerator may prove advantageous.

REFERENCES:
patent: 3344357 (1967-09-01), Blewett
patent: 4069457 (1978-01-01), Martin et al.

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