| Title: | Particle identification performance of the prototype aerogel RICH counter for the Belle II experiment |
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| Authors: | ID Iwata, S. (Author)
ID Korpar, Samo (Author)
ID Križan, Peter (Author)
ID Pestotnik, Rok (Author)
ID Šantelj, Luka (Author)
ID Seljak, Andrej (Author)
ID Tahirović, Elvedin (Author), et al. |
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| Files: |  Progress_of_Theoretical_and_Experimental_Physics_2016_Iwata_et_al._Particle_identification_performance_of_the_prototype_aerogel_RICH_cou.pdf (1,57 MB)
MD5: EF1F114E71D56770A33AC656E7ECDF8D
PID: 20.500.12556/dkum/10cc689a-158f-4ce0-a50f-1107b7362e4c
 https://academic.oup.com/ptep/article-lookup/doi/10.1093/ptep/ptw005
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FKKT - Faculty of Chemistry and Chemical Engineering
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| Abstract: | We have developed a new type of particle identification device, called an aerogel ring imaging Cherenkov (ARICH) counter, for the Belle II experiment. It uses silica aerogel tiles as Cherenkov radiators. For detection of Cherenkov photons, hybrid avalanche photo-detectors (HAPDs) are used. The designed HAPD has a high sensitivity to single photons under a strong magnetic field. We have confirmed that the HAPD provides high efficiency for single-photon detection even after exposure to neutron and $\gamma$-ray radiation that exceeds the levels expected in the 10-year Belle II operation. In order to confirm the basic performance of the ARICH counter system, we carried out a beam test at the using a prototype of the ARICH counter with six HAPD modules. The results are in agreement with our expectations and confirm the suitability of the ARICH counter for the Belle II experiment. Based on the in-beam performance of the device, we expect that the identification efficiency at $3.5\,{\rm GeV}/c$ is 97.4% and 4.9% for pions and kaons, respectively. This paper summarizes the development of the HAPD for the ARICH and the evaluation of the performance of the prototype ARICH counter built with the final design components. |
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| Keywords: | H14, elementary particle physics, particle detectors, Belle II detector, ring imaging Cherenkov counters, RICH counters |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2016 |
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| Number of pages: | str. 1-16 |
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| Numbering: | Letn. 2016, št. 3 |
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| PID: | 20.500.12556/DKUM-66979  |
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| ISSN: | 2050-3911 |
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| UDC: | 539.1.074 |
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| ISSN on article: | 2050-3911 |
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| COBISS.SI-ID: | 2941284 |
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| DOI: | 10.1093/ptep/ptw005 |
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| NUK URN: | URN:SI:UM:DK:R3GHFCKP |
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| Publication date in DKUM: | 21.07.2017 |
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| Views: | 1517 |
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| Downloads: | 568 |
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| Metadata: |    |
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| Categories: | Misc.
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