SMuK 2023 – wissenschaftliches Programm

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ST: Fachverband Strahlen- und Medizinphysik

ST 1: Accelerators for Radiation Therapy (joint session ST/AKBP)

ST 1.2: Vortrag

Dienstag, 21. März 2023, 11:15–11:30, GER/038

Application of HV-CMOS sensor in a position monitoring system for therapeutic ion beams — •Bogdan Topko1, Matthias Balzer2, Alexander Dierlamm1,2, Felix Ehrler2, Ulrich Husemann1, Roland Koppenhöfer1, Ivan Perić2, Martin Pittermann1, and Alena Weber2,31Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT) — 2Institute for Data Processing and Electronics (IPE), KIT — 3now with Bosch AG

Cancer treatment with ion beams provides critical advantages compared to the photon irradiation approach. The Bragg peak of the ion energy deposition near the end of the particle range allows to deposit the maximum of energy to the tumor and minimize the damage of healthy tissue. The beam position and size can be precisely controlled by the beam delivery system. In order to provide effective and safe dose delivery to the tumor, a fast and reliable beam monitoring system is required. The studies presented in this talk are focused on the application of HV-CMOS sensors for such a beam monitoring system. This system should provide information about beam position, shape and fluence in real time. It should work under beam intensities up to 1010 s−1 and deliver fluence information every 1-2 µs. In order to fulfill the timing requirements, the HitPix chip family with counting electronics and frame based readout has been developed at the ASIC and Detector Lab (IPE, KIT). Recent measurements with ion beams and a multi-chip matrix as well as future developments are discussed.

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