Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Multi-stage cavity cyclotron resonance accelerators










Image Number 5 for United States Patent #6617810.

A high-current, high-gradient, high-efficiency, multi-stage cavity cyclotron resonance accelerator (MCCRA) provides energy gains of over 50 MeV/stage, at an acceleration gradient that exceeds 20 MeV/m, in room temperature cavities. The multi-stage cavity cyclotron resonance accelerator includes a charged particle source, a plurality of end-to-end rotating mode room-temperature cavities, and a solenoid coil. The solenoid coil encompasses the cavities and provides a substantially uniform magnetic field that threads through the cavities. Specifically, the MCCRA is provided with a constant magnetic field sufficient to produce a cyclotron frequency a little higher than the RF of the accelerating electric field. A plurality of input feeds, each of which respectively coupled to a cavity, are also provided. According to an embodiment of the invention, the beam from the first cavity passes through a cutoff drift tube and is accelerated further with a cavity supporting a still lower radio-frequency electric field. This embodiment yields a several-milliampere one-gigavolt proton beam efficiently. The single cavity transfers about 70% of the radio-frequency energy to the beam. A multiple-cavity accelerator using a constant or slightly decreasing static magnetic field along its length and using cutoff drift tubes between the cavities operating at progressively lower frequencies, each somewhat lower than the local relativistic cyclotron frequency of the beam in that cavity, provides an extremely-efficient, compact, continuously-operating, medium-energy accelerator.








 
 
  Recently Added Patents
Compositions and processes for forming photovoltaic devices
Power converter and method of power conversion
Method and system for detecting data modification within computing device
Lithographic apparatus and device manufacturing method
Method and apparatus for executing load distributed printing
Adhesive structure of optical device, adhesion method, and optical pickup device
Aisle barrier
  Randomly Featured Patents
High performance differential amplifier
Field magnet for miniature motors
Method for analysis of compounds with amino group and analytical reagent therefor
Symbol analyzing device, symbol analyzing method, and information storage medium
Method and heater apparatus with protective fuse for medical applications
Method for liquifying natural gas
Introspective editor system, program, and method for software translation using a facade class
Device to divert water from deck
Encoded control channel information interleaving
Power supply configuration for an electric motor with four brushes