Cherenkov detectors

2020 ◽  
pp. 437-476
Author(s):  
Hermann Kolanoski ◽  
Norbert Wermes
Keyword(s):  
Emission Intensity ◽  
Cherenkov Radiation ◽  
Physical Phenomenon ◽  
Particle Identification ◽  
Cherenkov Detectors ◽  
Particle Detection ◽  
Detection And Identification ◽  
Imaging Detectors ◽  
Cherenkov Ring ◽  
Ring Imaging

Particles passing through a medium with a velocity larger than that of light in that medium emit electromagnetic radiation, called Cherenkov radiation. In this chapter the physical phenomenon and characteristic parameters of Cherenkov radiation, such as Cherenkov angle, spectrum and emission intensity, are introduced and the applications for particle detection and identification are discussed. It follows a presentation of the relevant detector types, such as threshold and differential Cherenkov detectors, ring imaging detectors (RICH and DIRC) as well as Cherenkov detectors in astroparticle experiments. The obtainable resolutions for particle identification via Cherenkov ring imaging and their limitations are discussed as well.

scholarly journals Surface Dyakonov–Cherenkov radiation

eLight ◽  
2022 ◽  
Vol 2 (1) ◽  
Author(s):  
Hao Hu ◽  
Xiao Lin ◽  
Liang Jie Wong ◽  
Qianru Yang ◽  
Dongjue Liu ◽  
...  
Keyword(s):  
Particle Velocity ◽  
Cherenkov Radiation ◽  
Particle Trajectory ◽  
Particle Identification ◽  
Cherenkov Detectors ◽  
Birefringent Crystal ◽  
Enhanced Sensitivity ◽  
Radiation Enhancement ◽  
New Type ◽  
Particle Velocities

AbstractRecent advances in engineered material technologies (e.g., photonic crystals, metamaterials, plasmonics, etc.) provide valuable tools to control Cherenkov radiation. In all these approaches, however, the particle velocity is a key parameter to affect Cherenkov radiation in the designed material, while the influence of the particle trajectory is generally negligible. Here, we report on surface Dyakonov–Cherenkov radiation, i.e. the emission of directional Dyakonov surface waves from a swift charged particle moving atop a birefringent crystal. This new type of Cherenkov radiation is highly susceptible to both the particle velocity and trajectory, e.g. we observe a sharp radiation enhancement when the particle trajectory falls in the vicinity of a particular direction. Moreover, close to the Cherenkov threshold, such a radiation enhancement can be orders of magnitude higher than that obtained in traditional Cherenkov detectors. These distinct properties allow us to determine simultaneously the magnitude and direction of particle velocities on a compact platform. The surface Dyakonov–Cherenkov radiation studied in this work not only adds a new degree of freedom for particle identification, but also provides an all-dielectric route to construct compact Cherenkov detectors with enhanced sensitivity.

Performance of the endcap Cherenkov ring imaging detector at SLD

2002 ◽  
Author(s):  
K. Abe ◽  
P. Antilogus ◽  
D. Aston ◽  
K. Baird ◽  
A. Bean ◽  
...  
Keyword(s):  
Imaging Detector ◽  
Cherenkov Ring ◽  
Ring Imaging

scholarly journals Performance evaluation of the aerogel RICH counter for the Belle II spectrometer using early beam collision data

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
M Yonenaga ◽  
I Adachi ◽  
L Burmistrov ◽  
F Le Diberder ◽  
T Iijima ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Probability Density Function ◽  
Probability Density ◽  
Density Function ◽  
Silica Aerogel ◽  
Particle Identification ◽  
Early Operation ◽  
Identification Method ◽  
Belle Ii ◽  
Ring Imaging

Abstract The Aerogel Ring Imaging Cherenkov (ARICH) counter serves as a particle identification device in the forward end-cap region of the Belle II spectrometer. It is capable of identifying pions and kaons with momenta up to $4\>$GeV$\>$c$^{-1}$ by detecting Cherenkov photons emitted in the silica aerogel radiator. After the detector alignment and calibration of the probability density function, we evaluate the performance of the ARICH counter using early beam collision data. Event samples of $D^{\ast +} \to D^0 \pi^+ (D^0 \to K^-\pi^+)$ were used to determine the $\pi(K)$ efficiency and the $K(\pi)$ misidentification probability. We found that the ARICH counter is capable of separating kaons from pions with an identification efficiency of $93.5 \pm 0.6 \, \%$ at a pion misidentification probability of $10.9 \pm 0.9 \, \%$. This paper describes the identification method of the counter and the evaluation of the performance during its early operation.

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