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TY - CONF AU - Holder, D.J. AU - Green, A.F. AU - Owen, H.L. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - A Compact Superconducting 330 MeV Proton Gantry for Radiotherapy and Computed Tomography J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The primary advantage of proton beam therapy as a cancer treatment is its ability to maximize the radiation dose delivered to the target volume and minimize the dose to surrounding healthy tissue, due to the inherently narrow Bragg peak at the end of the proton range. This can be further enhanced by imaging the target volume and surrounding tissues using proton Computed Tomography (pCT), which directly measures the energy loss from individual protons to infer the tissue density. Proton energies up to 330 MeV are required for pCT. We describe a superconducting gantry design which can deliver protons for both therapy and pCT with a similar size to existing treatment gantries. The use of ten identical combined-function superconducting dipole magnets minimizes the weight and technical development required. Based on experience with superconducting magnets for carbon gantries it should be possible to change the magnetic field sufficiently quickly to perform spot-scanning over successive layers without inducing quenching. It is envisaged that a combination of cryogenic cooling and cryogen-free cooling will be used to achieve the required operating temperature for the magnet windings. PB - JACoW CP - Geneva, Switzerland SP - 2202 EP - 2204 KW - proton KW - dipole KW - target KW - superconducting-magnet KW - magnet-design DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-WEPRO101 UR - http://jacow.org/ipac2014/papers/wepro101.pdf ER -