3 papers
astro-ph.IM2025
Multimodal Shifts in the Dark Current of Silicon Photomultipliers
Ryu Kawarasaki, Akira Okumura, Kazuhiro Furuta +1
The dark count rate is one of the key properties of avalanche photodiodes (APDs) and silicon photomultipliers (SiPMs). Previous studies have reported discrete shifts in the dark co…
astro-ph.IM2023
Study on the gain and photon detection efficiency drops of silicon photomultipliers under bright background conditions
Akira Okumura, Kawori Wakazono, Kazuhiro Furuta +1
The use of silicon photomultipliers (SiPMs) in imaging atmospheric Cherenkov telescopes is expected to extend the observation times of very-high-energy gamma-ray sources, particula…
astro-ph.IM2023
Development of a blue-mirror multilayer coating on light concentrators for future SiPM cameras
Akira Okumura, Junya Haga, Chiaki Inoue +3
Silicon photomultipliers (SiPMs) have a few advantages over conventional photomultiplier tubes (PMTs) used in imaging atmospheric Cherenkov telescopes. The first notable characteri…