Title :
Preliminary design of a dedicated proton therapy linac
Author :
Hamm, R.W. ; Crandall, K.R. ; Potter, J.M.
Author_Institution :
AccSys Technol., Inc., Pleasanton, CA, USA
Abstract :
The preliminary design has been completed for a low-current, compact proton linac dedicated to cancer therapy. A 3-GHz side-coupled structure accelerates the beam from a 70-MeV drift tube linac using commercially available S-band RF power systems and accelerating cavities. This significantly reduces the linac cost and allows incremental energies up to 250 MeV. The short beam pulse width and high repetition rate make the linac similar to the high-energy electron line linacs now used for cancer therapy, yet produce a proton flux sufficient for treatment of large tumors. The high pulse repetition rate permits raster scanning, and the small output beam size and emittance result in a compact isocentric gantry design. It is concluded that a linac will reduce the facility and operating costs for a dedicated cancer therapy system.<>
Keywords :
biomedical equipment; linear accelerators; particle beam diagnostics; proton accelerators; radiation therapy; 250 MeV; 3 GHz; 70 MeV; S-band RF power systems; beam emittance; beam size; cancer therapy; design; low-current; proton linac; raster scanning; Acceleration; Cancer; Costs; Linear particle accelerator; Medical treatment; Particle beams; Protons; Pulse power systems; Radio frequency; Space vector pulse width modulation;
Conference_Titel :
Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0135-8
DOI :
10.1109/PAC.1991.165037
