ProTec - A Normal-conducting Cyclinac for Proton Therapy Research and Radioisotope Production

The ProTec cyclinac proposes the use of a 24 MeV high-current cyclotron to inject protons into a normal-conducting linac pulsed at up to 1 kHz to give energies up to 150 MeV. As well as being able to produce radioisotopes such as 99mTc, the cyclinac can also provide protons at higher energy with beam properties relevant for proton therapy research. In this paper we present a comparison of linac designs in which S-band structures are used at lower energies, prior to injection into a high-gradient X-band structure; issues such as beam capture and transmission are evaluated.