Precision beam telescope based on SOI pixel sensor technology for electrons in the energy range of sub-GeV to GeV
| Autor: | Hisanori Suzuki, Takumi Omori, Kazuhiko Hara, Hiroki Yamauchi, Miho Yamada, Toru Tsuboyama, Ayaki Takeda |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Progress of Theoretical and Experimental Physics. 2022 |
| ISSN: | 2050-3911 |
| Popis: | We developed a beam telescope system comprising five layers of 300-$\mu$m-thick INTPIX4NA monolithic pixel sensors with each pixel size of 17 $\mu$m square. The sensors were fabricated using silicon-on-insulator (SOI) technology. The signal-to-noise ratio of 140--230 is realized at a bias voltage of 20~V. The tracker system was tested using a positron beam of 200--822 MeV/c, and various tracking methods are examined to optimize spatial precision achievable at these energies. The best tracking precision including the precision of the sensor under test itself is 11.04 $\pm$ 0.10 $\mu$m for 822-MeV/c positrons for an equidistant sensor spacing of 32 mm. The achieved precision results combined with the intrinsic spatial resolution value obtained for a similar system using 120 GeV protons are used to estimate the tracking performance of electrons in the GeV energy range; a tracking precision of 2.22 $\mu$m is evaluated for 5-GeV electrons. The method to estimate the tracking performance is verified using a Geant4-based simulation. The developed high precision tracker system enables to map the detailed performance of the sensors with pixel sizes of $\mathcal{O}$(10 $\mu$m), therefore will be a powerful system for development of devices targeting precision position resolutions. Comment: 13 figures and 4 tables |
| Databáze: | OpenAIRE |
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