https://doi.org/10.1051/epjconf/202532000061
Studies on Dynamic Range of SiPMs with High Pixel Densities
1 Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing, 100049, China
2 University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
3 Tsung-Dao Lee Institute, Shanghai Jiao Tong University, 1 Lisuo Road, Shanghai, 201210, China
4 Institute of Nuclear and Particle Physics, School of Physics and Astronomy, 800 Dongchuan Road, Shanghai, 200240, China
5 Key Laboratory for Particle Astrophysics and Cosmology (MOE), Shanghai Key Laboratory for Particle Physics and Cosmology (SKLPPC), Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
* e-mail: liuyong@ihep.ac.cn
Published online: 7 March 2025
This study examines the dynamic range and saturation behavior of three SiPM models with pixel pitches of 25 µm, 10 µm, and 6 µm, with respective pixel counts of 57,600, 89,984, and 244,719. Using a picosecond laser as the light source and a photomultiplier tube (PMT) operating at different bias voltages as a scaler, we obtained complete response curves of these devices. The results show that SiPMs with 25 µm and 10 µm pixel pitches reached saturation near their nominal pixel counts, while the 6 µm SiPM saturated at about half its nominal count.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
