Dresden 2020 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 8: New Accelerator Concepts
AKBP 8.5: Vortrag
Dienstag, 17. März 2020, 15:30–15:45, HSZ 301
Online measurement of the fully angularly resolved energy spectrum of laser plasma-based accelerated protons. — •Marvin Reimold1,2, Josefine Metzkes-Ng1, Heide Meißner1, Karl Zeil1, and Ulrich Schramm1,2 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2TU Dresden, Dresden, Germany
Laser plasma-based accelerators promise to provide proton sources for radiobiological studies with extended possibilities compared to conventional accelerators due to short accerelation lengths, high pulse doses, high dose rates and the usage of compact pulsed operated magnets for beam guiding. For the generation of radiobiological relevant proton energies, Petawatt (PW) clase laser powers are required, which can be provided at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) by the DRACO laser system and the upcoming PENELOPE laser system. Both laser systems will be used to perform radiobiological studies. This requires the fully angularly resolved characterization of the produced proton energy spectrum at the source. At the moment no online detector is existing, which could fullfill this task. We present our detector system design based on scintillator emission tomography for the fully angularly resolved characterization of the proton energy spectrum at the source. We will focus on the reconstruction of the 3D dose distribution inside the scintillator volume and the reverse calculation of the angularly resolved proton energy spectrum from the reconstructed 3D proton dose distribution.