2–6 Dec 2024
CERN
Europe/Zurich timezone

Fluence profiling at JSI TRIGA reactor irradiation facility

3 Dec 2024, 12:00
20m
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

400
Show room on map
WG5 - Characterization techniques - facilities WG5 - Characterization

Speakers

Igor Mandic (Jozef Stefan Institute (SI)) Valentina Sola (Universita e INFN Torino (IT))

Description

We present the updated analysis of the fluence profile at the JSI TRIGA neutron reactor facility in Ljubljana. For the study, multi-pad Low-Gain Avalanche Diodes (LGADs) are used. The deactivation of acceptor doping in the gain layer implant due to the irradiation, typical of LGAD devices, is exploited to map the fluence profile inside the irradiation channels. The amount of active doping of the LGAD gain layer is extracted via capacitance-voltage measurements for each pad before and after irradiation to a fluence of 1.5$\times$10$^{15}$ n$_{eq}$/cm$^2$, providing a precise and prompt measurement of the fluence distribution over the LGAD sensor. Experimental results are compared to neutron fluence expectations calculated with Monte Carlo techniques.

Type of presentation (in-person/online) in-person presentation
Type of presentation (I. scientific results or II. project proposal) I. Presentation on scientific results

Authors

Gregor Kramberger (Jozef Stefan Institute (SI)) Igor Mandic (Jozef Stefan Institute (SI)) Klemen Ambrožič (Jozef Stefan Institute (SI)) Luka Snoj (University of Ljubljana and Jozef Stefan Institute (SI)) Marco Ferrero (Universita e INFN Torino (IT)) Valentina Sola (Universita e INFN Torino (IT))

Presentation materials