Speaker
Description
We tested micro-diamonds (collaboration with the University of Roma tor Vergata) and ultra-thin ionization chambers (collaboration with the university of Santiago de Compostela), and investigated optically stimulated luminescence (OSL) sheets, point scintillators and a 2D scintillating dosimetry system (in collaboration with SCK-CEN and Agfa).
The ElectronFlash allows systematic variation of the number of pulses, pulse repetition frequency (PRF) and pulse length.
All tested dosimeters showed to be promising, but optimization is needed to overcome their limitations. The prototype micro-diamond for UHDR electron beams, currently distributed by PTW Freiburg, requires a dedicated box to reduce the instantaneous current presented to the electrometer. The OSL sheets with lowest sensitivity showed an instantaneous dose rate dependence, and the point scintillators and 2D scintillating system were limited by their scintillating decay.
The research on UHDR electron dosimetry in Antwerp has led to promising results using a large variety of dosimetric tools.
