Belle II aerogel RICH detector

The aerogel Ring Imaging CHerenkov counter (ARICH) is the particle identification device installed in the forward region of the Belle II detector at the SuperKEKB accelerator facility in Japan. The first electron–positron collisions at SuperKEKB took place on April 26, 2018, during the so called pha...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2020-04, Vol.958, p.162232, Article 162232
Main Authors: Burmistrov, L., Adachi, I., Le Diberder, F., Dolenec, R., Hataya, K., Iijima, T., Kakimoto, S., Kakuno, H., Kawai, H., Kawasaki, T., Kindo, H., Kohriki, T., Konno, T., Korpar, S., Križan, P., Kumita, T., Lai, Y., Machida, M., Mrvar, M., Nishida, S., Noguchi, K., Ogawa, K., Ogawa, S., Pestotnik, R., Šantelj, L., Shoji, M., Sumiyoshi, T., Tabata, M., Tamechika, S., Yonenaga, M., Yoshizawa, M., Yusa, Y.
Format: Article
Language:English
Subjects:
Aerogel
Cherenkov effect
Particle identification detector
RICH
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Summary:The aerogel Ring Imaging CHerenkov counter (ARICH) is the particle identification device installed in the forward region of the Belle II detector at the SuperKEKB accelerator facility in Japan. The first electron–positron collisions at SuperKEKB took place on April 26, 2018, during the so called phase 2 run. The measured performance of the detector based on recorded Bhabha events during phase 2 is presented. We measure a 14 mrad average angular resolution per photon and 10 photons per Bhabha electron in the [6–8] GeV/c momentum range.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2019.05.073