https://doi.org/10.1140/epjs/s11734-023-00892-8
Regular Article
Femtosecond laser-based TCT-TPA and IBIC microscopy: two powerful depth profiling characterization tools for testing the micron-sized sensitive volumes in micro-strips or pixeled detectors for microdosimetry and hadron therapy
1
Faculty of Natural Sciences and Mathematics, University of Montenegro, Dzordza Vashingtona bb, 81 000, Podgorica, Montenegro
2
ELI Beamlines, Extreme Light Infrastructure ERIC, Za Radnici 835, 25241, Dolní Brezany, Czech Republic
3
Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
Received:
23
September
2022
Accepted:
15
May
2023
Published online:
1
June
2023
Advanced radiation therapy requires advanced instrumentation for dose delivery and beam monitoring. On the other side, research and development of state-of-the-art radiation detectors require research and the development of advanced techniques and instrumentation for characterizing these detectors. The newly developed timing sensors with good spatial and timing resolution, such as low gain avalanche diodes, become very attractive devices to be exploited and integrated in an innovative way into pCT, PET systems, or some other hybrid technologies for microdosimetry. For this purpose, a high fill factor (the ratio of the active area and the total sensor area) and excellent isolation of pixels must be achieved. In the scope of study of the region between the two pixels, the two characterization techniques are presented in this paper: ion beam induced charge (IBIC) and two-photon absorption-transient current technique (TPA-TCT). The accuracy of methods and the precision of the measurements of the interpad distance (IP) are investigated by comparing the experimental data to the nominal values provided by vendors of the prototypes.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
