Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 115: Detectors 10 (semiconductors)
T 115.1: Talk
Friday, March 8, 2024, 09:00–09:15, Geb. 30.23: 2/1
Simulation of HV-CMOS sensor arrays intended for beam monitoring at ion beam therapy facilities — •Pietro Marchesi1, Alexander Dierlamm1,2, Ulrich Husemann1, Markus Klute1, and Bogdan Topko1 — 1Institute of Experimental Particle Physics (ETP), Karlsruhe Institute of Technology (KIT) — 2Institute for Data Processing and Electronics (IPE), KIT
The use of ion beams for cancer therapy has been proven to be an advantageous alternative to conventional photon therapy due to the ability to deliver the dose more precisely to the malignant tumor and spare healthy tissue thanks to the depth control that the Bragg peak of ions allows.
To operate such a therapeutic system safely, precise monitoring of the beam characteristics (specially position and width) is required. To this end, KIT has been developing HV-CMOS detectors intended for the Heidelberg Ion-Beam Therapy Center consisting of an array of individual sensor chips.
To assist in the development efforts, simulations using the Allpix Squared software have been made. The use of individual chips arranged into an array implies the presence of gaps between them, which can induce biases in the reconstruction of the beam characteristics. An interpolation algorithm is presented that bridges these gaps to avoid such effects. Simulated data and real data from beam tests are compared.
Keywords: Allpix Squared; HV-CMOS