OCTOPOD: Single-bunch tomography for angular-spectral characterization of laser-driven protons

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • M. Reimold - , Faculty of Physics, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • S. Assenbaum - , Faculty of Physics, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • E. Beyreuther - , Helmholtz-Zentrum Dresden-Rossendorf, OncoRay - National Centre for Radiation Research in Oncology (Author)
  • E. Bodenstein - , TUD Dresden University of Technology (Author)
  • F. E. Brack - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • C. Eisenmann - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • F. Englbrecht - , Ludwig Maximilian University of Munich (Author)
  • F. Kroll - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • F. Lindner - , Ludwig Maximilian University of Munich (Author)
  • U. Masood - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • J. Pawelke - , Helmholtz-Zentrum Dresden-Rossendorf, OncoRay - National Centre for Radiation Research in Oncology (Author)
  • U. Schramm - , Helmholtz-Zentrum Dresden-Rossendorf, TUD Dresden University of Technology (Author)
  • M. Schneider - , Department of Radiotherapy and Radiooncology, OncoRay - National Center for Radiation Research in Oncology, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • M. Sobiella - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • M. E.P. Umlandt - , Faculty of Physics, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • M. Vescovi - , Chair of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • K. Zeil - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • T. Ziegler - , Chair of Joining Technology and Assembly, Chair of Joining Technology and Assembly, Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • J. Metzkes-Ng - , Helmholtz-Zentrum Dresden-Rossendorf (Author)

Abstract

Laser-plasma accelerated (LPA) proton bunches are now applied for research fields ranging from ultra-high-dose-rate radiobiology to material science. Yet, the capabilities to characterize the spectrally and angularly broad LPA bunches lag behind the rapidly evolving applications. The OCTOPOD translates the angularly resolved spectral characterization of LPA proton bunches into the spatially resolved detection of the volumetric dose distribution deposited in a liquid scintillator. Up to 24 multi-pinhole arrays record projections of the scintillation light distribution and allow for tomographic reconstruction of the volumetric dose deposition pattern, from which proton spectra may be retrieved. Applying the OCTOPOD at a cyclotron, we show the reliable retrieval of various spatial dose deposition patterns and detector sensitivity over a broad dose range. Moreover, the OCTOPOD was installed at an LPA proton source, providing real-time data on proton acceleration performance and attesting the system optimal performance in the harsh laser-plasma environment.

Details

Original languageEnglish
Article numbere68
JournalHigh power laser science and engineering
Volume11
Publication statusPublished - 4 Jul 2023
Peer-reviewedYes

Keywords

Keywords

  • laser-plasma acceleration of protons, proton detector, tomographic reconstruction