Development and quality control of PMT modules for the large-sized telescopes of the Cherenkov Telescope Array Observatory

Bibcode
2025NIMPA107370229S
DOI
10.1016/j.nima.2025.170229
Saito, T.; Takahashi, M.; Inome, Y.; Abe, H.; Artero, M.; Blanch, O.; Becerra González, J.; Fukami, S.; Hadasch, D.; Hanabata, Y.; Hattori, Y.; Herrera Llorente, J.; Ishio, K.; Iwasaki, H.; Katagiri, H.; Kawamura, K.; Kerszberg, D.; Kimura, S.; Kiyomoto, T.; Kojima, T.; Konno, Y.; Kobayashi, Y.; Koyama, S.; Kubo, H.; Kushida, J.; López-Oramas, A.; Masuda, S.; Matsuoka, S.; Mazin, D.; Nakajima, D.; Nakamori, T.; Nagayoshi, T.; Ninci, D.; Nishijima, K.; Nishiyama, G.; Nogami, Y.; Nozaki, S.; Ogino, M.; Ohoka, H.; Oka, T.; Ono, S.; Okumura, A.; Orito, R.; Rugliancich, A.; Sakurai, S.; Sasaki, N.; Sunada, Y.; Suzuki, M.; Tamura, K.; Takeda, J.; Terada, Y.; Teshima, M.; Tokanai, F.; Tomono, Y.; Tsujimoto, S.; Tsukamoto, Y.; Umetsu, Y.; Yamamoto, T.; Yoshida, T.
Bibliographical reference

Nuclear Instruments and Methods in Physics Research A

Advertised on:
4
2025
Number of authors
59
IAC number of authors
3
Citations
2
Refereed citations
2
Description
The camera of the Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array Observatory (CTAO) consists of 1855 pixels that are grouped into 265 high-performance photomultiplier tube (PMT) modules. Each module comprises a seven-light-guide plate, seven PMT units, a slow control board, and a readout board with a trigger board. The requirements for the PMT modules include various aspects, such as photon detection efficiency, dynamic range, buffer depth, and test pulse functionality. We have developed a high-performance PMT module that fulfills all these requirements. Mass-production and quality control (QC) of modules for all four LSTs of the northern CTAO have been completed. Here we report on the technical details of each element of the module and its performance, together with the methods and results of QC measurements.
Related projects
Project Image
Particle Astrophysics
The members of the Particle Astrophysics Group of the IAC participate actively in three large international collaborations of high-energy astrophysics: AMS-02 (Alpha Magnetic Spectrometer), the Cherenkov radiation telescopes MAGIC I and II and the Cherenkov Telescope Array Observatory ( CTAO). We also participate in the ASTRI mini-array, the gamma
Mónica Luisa
Vázquez Acosta
In progress
Type
Refereed
Cosmology & Astroparticles (CYA, CTA)

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