2023

Tikkanen, Joonas Samuli; Kirschenmann, Stefanie; Kramarenko, Nikita; Brücken, Erik; Koponen, Pirkitta; Luukka, Panja; Siiskonen, Teemu; Turpeinen, Raimo; Ott, Jennifer

A pixelated silicon detector, developed originally for particle physics experiments, was used for a beam profile measurement of a cobalt-60 (Co-60) irradiator in a water phantom. The beam profile was compared to a profile measured with a pinpoint ionization chamber. The differences in the pixel detector and pinpoint chamber relative profiles were within approximately 2% of profile maximum, and after calculating correction factors with Monte Carlo simulations for the pixel detector, the maximum difference was decreased to approximately 1% of profile maximum. The detector’s capability to measure pulse-height was used to record an electron pulse-height spectrum in water in the Co-60 beam, and the results agreed well with simulations.