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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.07442 |
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| _version_ | 1866910995639697408 |
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| author | Sato, A. Nakamori, T. Shoji, M. Sato, T. Hashiyama, K. Hasebe, M. Maeshiro, M. Sato, R. Honda, R. Miyahara, M. |
| author_facet | Sato, A. Nakamori, T. Shoji, M. Sato, T. Hashiyama, K. Hasebe, M. Maeshiro, M. Sato, R. Honda, R. Miyahara, M. |
| contents | Astrophysical transient phenomena on sub-millisecond timescales, such as fast radio bursts and giant radio pulses from the Crab pulsar, have been primarily observed in radio wavebands. To investigate their origins, a photon detector with high sensitivity and high time resolution is required also in other wavelengths. Recently, we developed the Imager of MPPC-based Optical photoN counter from Yamagata (IMONY), an observation system utilizing a Geiger-mode avalanche photodiode (GAPD) as a sensor. The sensor consists of 64 pixels, each comprising a GAPD and a quenching resistor, with pixel sizes of 75, 100, 150, and 200\,$μ$m. Each pixel signal is read out independently, enabling single-photon detection. After successfully observing the Crab pulsar using two Japanese telescopes, we upgraded the readout boards to achieve a more compact and stable system. The new system incorporates an analog application-specific integrated circuit (ASIC) developed at KEK for multi-purpose fast readout for silicon photomultipliers. This ASIC features a fast transimpedance amplifier and a comparator, independently processing 16 channels. A Global Navigation Satellite System receiver and a Field Programmable Gate Array (FPGA) provide timestamps for each detected photon with a resolution of 100 ns. The FPGA transmits the acquired data to a PC via Ethernet. This paper presents the details of the new system and the results of its initial evaluation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07442 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Development of an imager with high time resolution optical photon counter Sato, A. Nakamori, T. Shoji, M. Sato, T. Hashiyama, K. Hasebe, M. Maeshiro, M. Sato, R. Honda, R. Miyahara, M. Instrumentation and Methods for Astrophysics Instrumentation and Detectors Astrophysical transient phenomena on sub-millisecond timescales, such as fast radio bursts and giant radio pulses from the Crab pulsar, have been primarily observed in radio wavebands. To investigate their origins, a photon detector with high sensitivity and high time resolution is required also in other wavelengths. Recently, we developed the Imager of MPPC-based Optical photoN counter from Yamagata (IMONY), an observation system utilizing a Geiger-mode avalanche photodiode (GAPD) as a sensor. The sensor consists of 64 pixels, each comprising a GAPD and a quenching resistor, with pixel sizes of 75, 100, 150, and 200\,$μ$m. Each pixel signal is read out independently, enabling single-photon detection. After successfully observing the Crab pulsar using two Japanese telescopes, we upgraded the readout boards to achieve a more compact and stable system. The new system incorporates an analog application-specific integrated circuit (ASIC) developed at KEK for multi-purpose fast readout for silicon photomultipliers. This ASIC features a fast transimpedance amplifier and a comparator, independently processing 16 channels. A Global Navigation Satellite System receiver and a Field Programmable Gate Array (FPGA) provide timestamps for each detected photon with a resolution of 100 ns. The FPGA transmits the acquired data to a PC via Ethernet. This paper presents the details of the new system and the results of its initial evaluation. |
| title | Development of an imager with high time resolution optical photon counter |
| topic | Instrumentation and Methods for Astrophysics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2506.07442 |