Dosimetry of laser-accelerated carbon ions for cell irradiation at ultra-high dose rate

G. Milluzzo, H. Ahmed, L. Romagnani, D. Doria, P. Chaudhary, C. Maiorino, A. McIlvenny, A. McMurray, K. Polin, Y. Katzir, R. Pattathil, P. McKenna, K. Prise, M. Borghesi

Research output: Contribution to journalConference articlepeer-review

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Abstract

Charged particle radiotherapy is currently used in an increasing number of centres worldwide. While protons are the most widely used ion species, carbon ions have shown many advantages for the treatment of radioresistant tumours, thanks to their higher Linear Energy Transfer (LET) and Relative Biological Effectiveness (RBE). The complexity and the high cost of conventional carbon therapy facilities has stimulated the investigation of alternative acceleration approaches such as the processes based on high-power laser interaction with solid targets. Recent developments in ion acceleration have allowed to investigate for the first time the biological effects of carbon ions at ultra-high dose-rate (109-1010 Gy/s) using the GEMINI laser system at Rutherford Appleton Laboratory (RAL). Carbon ions were accelerated from ultrathin (10-20 nm) carbon foils and energy selected by a magnet allowing to irradiate the cells with an average carbon energy of 10 MeV/u 8%. A dosimetry approach specifically designed for these low-energy ions was employed, which was based on the use of unlaminated EBT3 Radiochromic films. The details of the dosimetry arrangement as well as the Geant4 simulation performed to predict the energy and the dose distribution at the cell plane will be reported.

Original languageEnglish
Article number012038
JournalJournal of Physics: Conference Series
Volume1596
Issue number1
DOIs
Publication statusPublished - 18 Sep 2020
Event4th European Advanced Accelerator Concepts Workshop, EAAC 2019 - Isola d'Elba, Italy
Duration: 15 Sep 201920 Sep 2019

Keywords

  • radiotherapy
  • carbon ions
  • ion acceleration
  • particle beams
  • laser-accelerated carbon beams

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