IPAC'24 - 15th International Particle Accelerator Conference

First dual isotope beam production for simultaneous heavy ion radiotherapy and radiography

WEAN1

22 May 2024, 09:30

20m

Room 104 (Music City Center)

Contributed Oral Presentation MC8.A28 Medical Applications WEAN: Applications of Accelerators, Technology Transfer and Industrial Relations and Outreach (Contributed)

Speaker

Michael Galonska (GSI Helmholtzzentrum für Schwerionenforschung GmbH)

Description

In the context of research on simultaneous heavy ion radiotherapy and radiography, a mixed carbon/helium ion beam has been successfully established and investigated at GSI for the first time to serve fundamental experiments on this new mode of image guidance. A beam with an adjustable ratio of 12C3+/4He+ was provided by the 14.5 GHz Caprice ECR ion source for subsequent acceleration in the linear accelerator UNILAC and the synchrotron SIS18. Despite the mass difference between the 4He+ and 12C3+ ions, both could be slowly extracted simultaneously at 225 MeV/u using the transverse knock-out extraction scheme. The ion beam has been finally characterized in the biophysics cave in terms of beam composition (particularly inter- and intra-spill He fraction), depth-dose-profiles, beam size, position and other parameters, all related to combined ion beam treatment and online monitoring. Utilizing high-speed particle radiography techniques, a fast extracted mixed ion beam has also been characterized in the plasma physics cave under conditions favorable to FLASH therapy.