Resources Contact Us Home
Negative ion beam source vacuum method and apparatus used in conjunction with a charged particle cancer therapy system

Image Number 14 for United States Patent #8129694.

The invention comprises a negative ion beam source vacuum method and apparatus used as part of an ion beam injection system, which is used in conjunction with multi-axis charged particle or proton beam radiation therapy of cancerous tumors. The negative ion beam source contains a vacuum chamber isolated by a vacuum barrier from the vacuum tube of the synchrotron. The negative ion beam source vacuum system preferably includes: a first pump turbo molecular pump, a large holding volume, and a semi-continuously operating pump. By only pumping ion beam source vacuum chamber and by only semi-continuously operating the ion beam source vacuum based on sensor readings about the holding volume, the lifetime of the semi-continuously operating pump is extended.

  Recently Added Patents
Titanium compounds and complexes as additives in lubricants
Touch screen guitar
Electron-beam lithography method with correction of line ends by insertion of contrast patterns
Regenerative power storage system mounted on DC electric railway car
Interface circuit
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Method for manufacturing non-volatile memory device, non-volatile memory element, and non-volatile memory device
  Randomly Featured Patents
Element persistent identification
Crystallization apparatus, crystallization method, phase modulation element, device and display apparatus
Endoscopic bipolar electrosurgical forceps
Hologram carrier
Apparatus for heat sealing thermoplastic sheeting
Apparatus and method for testing filters in a clean room
Optical system using active cladding layer
Bear ravioli
Additive for enhanced treatment of oil well contaminants
Containing elongate bulk products