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Ground-based gamma-ray astronomy in the Very High Energy (VHE, E>100 GeV) regime has fast become one of the most interesting and productive sub-fields of astrophysics today. Utilizing the Imaging Atmospheric Cherenkov Technique (IACT) to…

Instrumentation and Methods for Astrophysics · Physics 2017-10-30 J. E. Ward , J. Cortina , D. Guberman

Imaging Atmospheric Cherenkov Telescopes (IACTs) represent a class of instruments which are dedicated to the ground-based observation of cosmic VHE gamma ray emission based on the detection of the Cherenkov radiation produced in the…

Instrumentation and Methods for Astrophysics · Physics 2017-01-16 C. Arcaro , D. Corti , A. De Angelis , M. Doro , C. Manea , M. Mariotti , R. Rando , I. Reichardt , D. Tescaro

Among the main disadvantages of using silicon photomultipliers (SiPMs) in large experiments are their limited physical area (increasing the cost and the complexity of the readout of a camera) and their sensitivity to unwanted wavelengths.…

Instrumentation and Methods for Astrophysics · Physics 2019-02-20 D. Guberman , J. Cortina , J. E. Ward , E. Do Souto Espiñera , A. Hahn , D. Mazin

So far the current ground-based Imaging Atmospheric Cherenkov Telescopes (IACTs) have energy thresholds in the best case in the range of ~30 to 50 GeV (H.E.S.S. II and MAGIC telescopes). Lowest energy gamma-ray showers produce low light…

The current generation of Imaging Atmospheric Cherenkov Telescopes (IACTs), comprised of major installations such as the MAGIC telescopes, H.E.S.S. and VERITAS, is classified as the 3$^{\mathrm{rd}}$ generation of suchs instruments. These…

Instrumentation and Methods for Astrophysics · Physics 2023-10-02 Cornelia Arcaro , Michele Doro , Julian Sitarek , Dominik Baack

In the last ten years silicon photomultipliers (SiPMs) have gained terrain in experiments and applications in which photomultiplier tubes have been the dominant photosensors during decades. Imaging Atmospheric Cherenkov Telescopes (IACTs)…

Instrumentation and Methods for Astrophysics · Physics 2020-06-17 D. Guberman , R. Paoletti

The peak photon detection efficiency (PDE) of silicon photomultipliers (SiPMs) can be as good or better than the PDE of photomultiplier tubes (PMTs). There are experiments where the signal is measured in the presence of a strong, steady…

Instrumentation and Methods for Astrophysics · Physics 2024-04-23 A. Hahn , R. Mirzoyan , A. Dettlaff , D. Fink , D. Mazin , M. Teshima

The recent improvements in the performance of the silicon photomultipliers (SiPMs) made them attractive options as photo sensors of imaging atmospheric Cherenkov telescopes (IACTs). In fact, they are already adopted in some IACTs such as…

Instrumentation and Methods for Astrophysics · Physics 2023-09-20 Takayuki. Saito , K. Hashiyama , H. Iwasaki , H. Kubo , M. Mizote , A. Okumura , H. Tajima , T. Yamamoto

A novel photon detector, the Silicon Photomultiplier (SiPM), has been tested in proximity focusing Ring Imaging Cherenkov (RICH) counters that were exposed to cosmic-ray particles in Ljubljana, and a 2 GeV electron beam at the KEK research…

Instrumentation and Detectors · Physics 2010-03-04 S. Korpar , I. Adachi , H. Chagani , R. Dolenec , K. Hara , T. Iijima , P. Krizan , S. Nishida , R. Pestotnik , A. Stanovnik

Silicon photomultipliers (SiPMs) have become the baseline choice for cameras of the small-sized telescopes (SSTs) of the Cherenkov Telescope Array (CTA). On the other hand, SiPMs are relatively new to the field and covering large surfaces…

The Cherenkov Telescope Array (CTA) is the the next generation facility of imaging atmospheric Cherenkov telescopes; two sites will cover both hemispheres. CTA will reach unprecedented sensitivity, energy and angular resolution in…

MAGIC is a system of two imaging atmospheric Cherenkov telescopes (IACTs) located on the Canary island of La Palma. Each telescope's imaging camera consists of 1039 photomultiplier tubes (PMTs). We developed three detector modules based on…

Instrumentation and Methods for Astrophysics · Physics 2022-11-03 A. Hahn , R. Mirzoyan , A. Dettlaff , D. J. Fink , D. Mazin , M. Teshima

We present the development of a novel 11328 pixel silicon photomultiplier (SiPM) camera for use with a ground-based Cherenkov telescope with Schwarzschild-Couder optics as a possible medium-sized telescope for the Cherenkov Telescope Array…

Gamma-ray observations in the very-high-energy domain (E > 30 GeV) can exploit the imaging of few-nanosecond Cherenkov flashes from atmospheric particle showers. Photomultipliers have been used as the primary photosensors to detect…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Jonathan Biteau , David Chinn , Dennis Dang , Kevin Doyle , Caitlin A. Johnson , David A. Williams

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

Silicon photomultipliers (SiPMs) have a few advantages over conventional photomultiplier tubes (PMTs) used in imaging atmospheric Cherenkov telescopes. The first notable characteristic is their higher photon detection efficiency (PDE) of up…

Instrumentation and Methods for Astrophysics · Physics 2023-09-19 Akira Okumura , Junya Haga , Chiaki Inoue , Keiji Nishimoto , Kazuhiro Furuta , Hiroyasu Tajima

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

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

Geiger-mode Avalanche Photodiodes (G-APD) bear the potential to significantly improve the sensitivity of Imaging Air Cherenkov Telescopes (IACT). We are currently building the First G-APD Cherenkov Telescope (FACT) by refurbishing an old…

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