Irradiation Studies of TGC Electronics Components for the ATLAS Experiment at High-Luminosity LHC

Yuya Ohsumi; Daisuke Hashimoto; Yasuyuki Horii; Takumi Aoki; Haruka Asada; Kazumasa Hashizume; Hayato Inaguma; Masaya Ishino; Miyuki Kikuchi; Shota Kondo; Reita Maeno; Airu Makita; Masaki Minakawa; Yuki Mitsumori; Yuki Nabeyama; Ren Nagasaka; Takumi Nakajima; Yoshifumi Narukawa; Atsuhiko Ochi; Yasuyuki Okumura; Osamu Sasaki; Aoto Tanaka; Akira Taniike; Makoto Tomoto; Arisa Wada; Erika Yamashita

arXiv · 2603.04129

Irradiation Studies of TGC Electronics Components for the ATLAS Experiment at High-Luminosity LHC

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Abstract

This paper evaluates the radiation tolerance of commercial off-the-shelf (COTS) electronics components for use in the Thin Gap Chamber (TGC) frontend electronics of the ATLAS experiment at the High-Luminosity LHC (HL-LHC). The ATLAS experiment has accumulated more than 450 fb^-1 of data as of 2025. Its luminosity upgrade, the HL-LHC scheduled to begin operation in 2030, will deliver 3000-4000 fb^-1 over ten years and lead to substantially higher radiation levels in detector electronics. The radiation levels for the TGC frontend electronics are estimated to be 4.1-7.3 Gy in terms of Total Ionizing Dose (TID) and 1.1-2.2 x 10^11 n_1MeV cm^-2 in terms of Non-Ionizing Energy Loss (NIEL). To evaluate component suitability under these conditions, TID tests were conducted using Cobalt-60 gamma rays at Nagoya University, and NIEL tests were performed with the Tandem Accelerator at Kobe University. Various COTS components, including SFP+ optical transceivers, clock jitter cleaners, optical fibers, voltage references, operational amplifiers, analog-to-digital converters, digital-to-analog converters, SD cards, flash memories, and low-dropout regulators, were tested and evaluated against the required radiation levels. The results demonstrate that all evaluated components meet the TID and NIEL tolerance requirements for application in the TGC frontend electronics at the HL-LHC.

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Yuya Ohsumi, Daisuke Hashimoto, Yasuyuki Horii, Takumi Aoki, Haruka Asada, Kazumasa Hashizume, Hayato Inaguma, Masaya Ishino, Miyuki Kikuchi, Shota Kondo, Reita Maeno, Airu Makita, Masaki Minakawa, Yuki Mitsumori, Yuki Nabeyama, Ren Nagasaka, Takumi Nakajima, Yoshifumi Narukawa, Atsuhiko Ochi, Yasuyuki Okumura, Osamu Sasaki, Aoto Tanaka, Akira Taniike, Makoto Tomoto, Arisa Wada, Erika Yamashita. 2026-03-04. Irradiation Studies of TGC Electronics Components for the ATLAS Experiment at High-Luminosity LHC. https://arxiv.org/abs/2603.04129

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