Radiation therapy pton sources》.pdf.pdf

Radiation therapy pton sourcesMarie Jacqueta,*, Pekka SuorttibLaboratoire de l'Acc?el?erateur Lin?eaire, Univ. Paris-Sud et RS, Orsay, FranceDepartment of Physics, University of Helsinki, POB 64, FIN-00014 Helsinki, Finlandarticle infoArticle history:Received 20 December 2014Received in revised form27 January epted 16 February 2015Available online 6 March 2015Keywords:X-pton sourceRadiation therapyabstractThe principle of pton source is presented brie?y. In collision with an ultrarelativisticelectron bunch a laser pulse is back-scattered as hard X-rays. The radiation cone has an opening of a fewmrad, and the energy bandwidth is a few percent. The electrons that have an energy of the order of a fewtens of MeV either circulate in storage ring, or are injected to a linac at a frequency of 10e100 MHz. At theinteraction point the electron bunch collides with the laser pulse that has been ampli?ed in a Fabry-Perotresonator. There are several machines in design or construction phase, and projected?uxes are 1012to1014photons/s. The?ux available at 80 keV from the ThomX machine pared with that used in theStereotactic Synchrotron Radiation Therapy clinical trials. It is concluded that ThomX has the potential ofserving as the radiation source in future radiation therapy programs, and that ThomX can be integratedin hospital environment.?2015 Published by Elsevier Ltd on behalf of Associaz