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
Electronic time stamping apparatus for use with an inground transmitter
Method of requesting CQI reports
Prodrugs of [4 [4-(5-Aminomethyl-2-fluoro-phenyl)-piperidin-1-yl]-(1H-pyrrolo-pyridin-yl- )-methanones and synthesis thereof
Evaluation compiler method
Plants and seeds of hybrid corn variety CH336383
Visibility radio cap and network
Apparatus and method for foreground detection
  Randomly Featured Patents
Light source for optical communication, optical transceiver and optical communication network
High temperature microelectromechanical (MEM) devices
Nicotine replacement applique
Aryl- or heteroaryl-sulfonyl compounds as acid secretion inhibitors
Heater assembly and heated trough for molten aluminum
Transfer of items between social networking websites
Infrared intrusion detector with response indicator light
Shoe construction providing spring action
Device for measuring optical characteristic quantities of transparent materials
Pear tree ("Autumn Red")