miniSCIDOM: a scintillator-based tomograph for volumetric dose reconstruction of single laser-driven proton bunches  

作　　者：A.Corvino M.Reimold E.Beyreuther F.-E.Brack F.Kroll J.Pawelke J.D.Schilz M.Schneider U.Schramm M.E.P.Umlandt K.Zeil T.Ziegler J.Metzkes-Ng 

机构地区：[1]Helmholtz-Zentrum Dresden–Rossendorf,Dresden,Germany [2]Technische Universität Dresden,Dresden,Germany [3]OncoRay–National Center for Radiation Research in Oncology,Faculty of Medicine and University Hospital Carl Gustav Carus,TUD Dresden University of Technology,Helmholtz-Zentrum Dresden–Rossendorf,Dresden,Germany [4]Current affiliation:Institut Curie,UniversitéPSL,CNRS UMR3347,Orsay,France [5]Current affiliation:Universitätsklinikum Freiburg,Freiburg,Germany

出　　处：《High Power Laser Science and Engineering》2024年第2期41-50,共10页高功率激光科学与工程（英文版）

基　　金：partially supported by H2020 Laserlab Europe V (PRISES, Contract No. 871124);the European Union’s Horizon 2020 Research and Innovation Programme Impulse (Grant agreement No. 871161);the support of the Weizmann-Helmholtz Laboratory for Laser Matter Interaction (WHELMI)

摘　　要：Laser plasma accelerators(LPAs)enable the generation of intense and short proton bunches on a micrometre scale,thus offering new experimental capabilities to research fields such as ultra-high dose rate radiobiology or material analysis.Being spectrally broadband,laser-accelerated proton bunches allow for tailored volumetric dose deposition in a sample via single bunches to excite or probe specific sample properties.The rising number of such experiments indicates a need for diagnostics providing spatially resolved characterization of dose distributions with volumes of approximately 1 cm^(3) for single proton bunches to allow for fast online feedback.Here we present the scintillator-based miniSCIDOM detector for online single-bunch tomographic reconstruction of dose distributions in volumes of up to approximately 1 cm^(3).The detector achieves a spatial resolution below 500μm and a sensitivity of 100 mGy.The detector performance is tested at a proton therapy cyclotron and an LPA proton source.The experiments’primary focus is the characterization of the scintillator’s ionization quenching behaviour.

关 键 词：beam monitoring detectors laser-driven proton beams scintillator-based diagnostics ultra-high dose rate 

分 类 号：TN24[电子电信—物理电子学]