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Title:Particle identification performance of the prototype aerogel RICH counter for the Belle II experiment
Authors:Iwata, S. (Author)
Korpar, Samo (Author)
Križan, Peter (Author)
Pestotnik, Rok (Author)
Šantelj, Luka (Author)
Seljak, Andrej (Author)
Tahirović, Elvedin (Author), et al.
Files:.pdf Progress_of_Theoretical_and_Experimental_Physics_2016_Iwata_et_al._Particle_identification_performance_of_the_prototype_aerogel_RICH_cou.pdf (1,57 MB)
URL https://academic.oup.com/ptep/article-lookup/doi/10.1093/ptep/ptw005
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
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.
Keywords:H14, elementary particle physics, particle detectors, Belle II detector, ring imaging Cherenkov counters, RICH counters
Year of publishing:2016
Number of pages:str. 1-16
Numbering:št. 3, Letn. 2016
ISSN on article:2050-3911
COBISS_ID:2941284 Link is opened in a new window
DOI:10.1093/ptep/ptw005 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Record is a part of a journal

Title:Progress of Theoretical and Experimental Physics
Shortened title:Prog. Theor. Exp. Phys.
Publisher:Oxford University Press
COBISS.SI-ID:2704635 New window

Secondary language

Keywords:H14, fizika osnovnih delcev, detektorji delcev, detektor Belle II, števci 'ring imaging Cherenkov', števci RICH


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