Title :
A compact proton synchrotron for cancer treatments
Author :
Hiramoto, Kazuo ; Umezawa, Masumi ; Matsuda, Kooji ; Nishi, Masatsugu
Author_Institution :
Res. Lab., Hitachi Ltd., Ibaraki, Japan
Abstract :
A compact proton synchrotron for cancer treatments is presented. In the present synchrotron, the beam can be accelerated up to 270 MeV for the application to proton radiography as well as cancer treatments. In order to shorten the straight section for the extraction deflector such as a septum magnet, the deflections clue to the defocusing quadrupole and edge type bending magnets in the synchrotron lattice are utilized effectively. The beam is extracted by the resonant extraction scheme which features that the position and gradient of the extracted beam are constant and the rapid switching is possible. Then, the present synchrotron can be applied to various irradiation schemes such as the double scattering, wobbler and raster scanning methods
Keywords :
accelerator magnets; biomedical equipment; cancer; electromagnets; particle beam extraction; particle beam focusing; proton accelerators; radiation therapy; synchrotrons; 0 to 270 MeV; cancer treatments; compact proton synchrotron; defocusing quadrupole; double scattering; edge type bending magnets; extraction deflector; proton radiography; raster methods; resonant extraction scheme; scanning methods; septum magnet; synchrotron lattice; wobbler methods; Acceleration; Cancer; Diagnostic radiography; Feature extraction; Lattices; Magnetic resonance; Particle beams; Protons; Scattering; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753424
