Title :
A compact proton accelerator system for cancer therapy
Author :
Yamaguchi, A. ; Nakayama, K. ; Rizawa, T. ; Sukenobu, S. ; Satoh, K. ; Morii, Y. ; Tanabe, Y. ; Chiba, Y.
Author_Institution :
Toshiba Corp., Yokohama, Japan
Abstract :
The basic design of a compact proton accelerator system for cancer therapy is described. The system consists of a 30 keV ion source, a 3 MeV RFQ linac, and a rapid-cycling 235 MeV synchrotron. A strong focusing combined function magnet, which has both focusing and defocusing section in a unit, is adopted instead of a quadrupole magnet. The RF system applies a compact ferrite loaded tuning-free cavity which has no bias windings. The synchrotron is operated at 20 Hz repetition with fast beam extraction. It is the same method as the KEK booster synchrotron, which has been using for proton therapy studies by Tsukuba University. In this system, a breath synchronized irradiation method is easily realized and the energy of proton beam can be changed flexibly within few minutes
Keywords :
accelerator RF systems; accelerator cavities; accelerator magnets; cancer; electromagnets; ion sources; linear accelerators; particle beam extraction; particle beam focusing; proton accelerators; radiation therapy; synchrotrons; 20 Hz; 235 MeV; 3 MeV; 30 keV; RF system; RFQ linac; cancer therapy; compact ferrite loaded tuning-free cavity; compact proton accelerator system; defocusing section; fast beam extraction; ion source; rapid-cycling synchrotron; strong focusing combined function magnet; Acceleration; Cancer; Ion sources; Lattices; Linear particle accelerator; Medical treatment; Particle beams; Proton accelerators; Synchrotrons; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753429
