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Gaseous PhotoMultipliers (GPM) are a very promising alternative of vacuum PMTs especially for large-size noble-liquid detectors in the field of Functional Nuclear Medical Imaging and Direct Dark Matter Detection. We present recent…

The central institute of electronics (ZEA-2) in the Forschungszentrum Juelich (FZJ) has developed a system to scan the response of the photocathode of photomultiplier tubes (PMT). The PMT sits tight on a supporting structure, while a blue…

Instrumentation and Detectors · Physics 2013-07-05 R. Fabbri

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a ground-based air shower array designed to detect Cherenkov light produced in water by secondary particles from atmospheric air showers. In order to improve the sensitivity…

High Energy Astrophysical Phenomena · Physics 2019-09-02 Dezhi Huang

The Jiangmen Underground Neutrino Observatory is proposed to determine neutrino mass hierarchy using a 20~ktonne liquid scintillator detector. Strict radio-purity requirements have been put forward for all the components of the detector.…

Instrumentation and Methods for Astrophysics · Physics 2020-07-15 Lifei Xie , Jinchang Liu , Shoukang Qiu , Cong Guo , Changgen Yang , Quan Tang , Yongpeng Zhang , Peng Zhang

The probability density function of the arrival time of \v{C}erenkov light on a photo-multiplier tube has been studied. This study covers light production, transmission and detection. The light production includes the light from a muon, the…

Instrumentation and Methods for Astrophysics · Physics 2023-06-01 M. de Jong , E. van Campenhout

Gamma-hadron discrimination based on shower observables is essential for identifying gamma-ray astrophysical sources at the highest energies. In this work, we introduce $P^{\alpha, T}_{\rm tail}$, a new discrimination variable for…

High Energy Physics - Phenomenology · Physics 2026-02-13 Ruben Conceição , Pedro J. Costa , Mário Pimenta

Photomultiplier tubes (PMTs) have been widely used in imaging atmospheric Cherenkov telescopes (IACTs). The Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array Observatory (CTAO), the latest-generation IACTs, are optimized for…

IceAct is a proposed surface array of cost effective and compact Silicon Photomultipliers (SiPM) based small-size (50 cm) Imaging Air Cherenkov Telescopes above the IceCube in-ice detector. In coincidence with the in-ice and surface…

High Energy Astrophysical Phenomena · Physics 2019-08-30 Merlin Schaufel , Karen Andeen , Jan Auffenberg

Telescopes, designed with semi-conductor based photo sensors, have the potential to detect Cherenkov or fluorescence light emitted by cosmic-rays in the atmosphere. Such telescopes promise a high duty cycle and efficiency in remote harsh…

Instrumentation and Methods for Astrophysics · Physics 2015-11-06 Jan Auffenberg , Thomas Bretz , Lukas Middendorf , Tim Niggemann , Leif Rädel , Merlin Schaufel , Sebastian Schoenen , Johannes Schumacher , Christopher Wiebusch

Determination of the energy and flux of the gamma photons by Imaging Atmospheric Cherenkov Technique is strongly dependent on optical properties of the atmosphere. Therefore, atmospheric monitoring during the future observations of the…

High Energy Astrophysical Phenomena · Physics 2018-01-22 Jakub Juryšek , Michael Prouza

Photomultiplier tubes (PMTs) are used in Imaging Atmospheric Cherenkov Telescopes (IACTs) to detect Cherenkov light produced by air showers induced by gamma rays in the atmosphere. The afterpulsing rate of the PMTs for the Large-Sized…

The key parameters of Cherenkov Correlated Timing (CCT) detectors are discussed. Measurements of radiator geometry, optical properties of radiator and coupling materials, and photon detector timing performance are presented.

Imaging Atmospheric Cherenkov Telescopes (IACTs) are very-large telescopes designed to detect the nanosecond-timescale flashes produced within extended air showers. Because IACTs are sensitive to the Cherenkov light (UV/blue) and use…

Instrumentation and Methods for Astrophysics · Physics 2019-08-12 T. Hassan , M. K. Daniel

The use of silicon photomultipliers (SiPMs) in imaging atmospheric Cherenkov telescopes is expected to extend the observation times of very-high-energy gamma-ray sources, particularly within the highest energy domain of 50-300 TeV, where…

Instrumentation and Methods for Astrophysics · Physics 2023-09-19 Akira Okumura , Kawori Wakazono , Kazuhiro Furuta , Hiroyasu Tajima

The IceCube Neutrino Observatory detects GeV-to-PeV+ neutrinos via the Cherenkov light produced by secondary charged particles from neutrino interactions with the South Pole ice. The detector consists of over 5000 spherical Digital Optical…

Instrumentation and Methods for Astrophysics · Physics 2023-07-19 Tianlu Yuan

We have estimated the reflected component of Cherenkov radiation, which arises in developing of an extensive air shower with primary energy of 10^20 eV over the ocean surface. It has been shown that, under conditions of the TUS experiment,…

Instrumentation and Methods for Astrophysics · Physics 2015-05-30 O. P. Shustova , N. N. Kalmykov , B. A. Khrenov

Photomultiplier tubes (PMTs) are essential in xenon detectors like PandaX, LZ, and XENON experiments for dark matter searches and neutrino properties measurement. To minimize PMT-induced backgrounds, stringent requirements on PMT…

The LHAASO (Large High Altitude Air Shower Observatory) experiment is proposed for very high energy gamma ray source survey, in which the WCDA (Water Cherenkov Detector Array) is the one of the major components. In the WCDA, a total of 3600…

Instrumentation and Methods for Astrophysics · Physics 2015-06-16 Lei Zhao , Shubin Liu , Qi An

The GCT is a dual-mirror Small-Sized-Telescope prototype proposed for the Cherenkov Telescope Array. Calibration of the GCT's camera is primarily achieved with LED-based flasher units capable of producing $\sim4$ ns FWHM pulses of 400 nm…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Anthony M. Brown , Thomas Armstrong , Paula M. Chadwick , Michael Daniel , Richard White

The paper reviews recent progress in particle identification methods. A survey of motivations and requirements for particle identification in various experimental environments is followed by the main emphasis, which is on the recent…

Instrumentation and Detectors · Physics 2008-11-26 Peter Krizan