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A fast trigger system is being designed as a potential upgrade to VERITAS, or as the basis for a future array of imaging atmospheric-Cherenkov telescopes such as AGIS. The scientific goal is a reduction of the energy threshold by a factor…

Instrumentation and Methods for Astrophysics · Physics 2009-08-04 M. Schroedter , J. Anderson , K. Byrum , G. Drake , C. Duke , J. Holder , A. Imran , A. Madhavan , F. Krennrich , A. Kreps , A. Smith

We demonstrate that a future high-energy electron-proton collider like THERA could largely extend the current HERA program in jet photoproduction of testing QCD and determining the partonic structure of the proton and the photon. Depending…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Klasen

TRACER ('Transition Radiation Array for Cosmic Energetic Radiation') is a balloon borne instrument that has been developed to directly measure the composition and energy spectra of individual heavy elements up to 10^15 eV per particle.…

Astrophysics · Physics 2011-07-13 P. J. Boyle

For cosmic particle spectroscopy on the International Space Station the AMS experiment will be equipped with a Transition Radiation Detector (TRD) to improve particle identification. The TRD has 20 layers of fleece radiator with Xe/CO2…

A measurement of the cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 8$ TeV is presented. The measurement covers the pseudo rapidity ranges…

High Energy Physics - Experiment · Physics 2016-10-13 ATLAS Collaboration

In this paper we propose a new method for measuring the cross section of low yield nuclear reactions by capturing the products in a cryogenically frozen noble gas solid. Once embedded in the noble gas solid, which is optically transparent,…

Instrumentation and Detectors · Physics 2019-06-19 Benjamin Loseth , Ruoyu Fang , Dustin Frisbie , Kristen Parzuchowski , Claudio Ugalde , Jennifer Wenzl , Jaideep Taggart Singh

The Cherenkov Telescope Array (CTA) will be the largest ground-based observatory operating in the very-high-energy gamma-ray (20 GeV - 300 TeV) range. It will be based on more than one hundred telescopes, located at two sites (northern and…

Instrumentation and Methods for Astrophysics · Physics 2018-01-22 Maria Concetta Maccarone

The CONCERTO spectral-imaging instrument was installed at the Atacama Pathfinder EXperiment (APEX) 12-meter telescope in April 2021. It has been designed to look at radiation emitted by ionised carbon atoms, [CII], and use the "intensity…

Large Array of imaging atmospheric Cherenkov Telescope (LACT) is an array of 32 Cherenkov telescopes with 6-meter diameter mirrors to be constructed at the LHAASO site, aiming to enhance our understanding of ultra-high energy gamma ray…

High Energy Astrophysical Phenomena · Physics 2025-09-26 Zhipeng Zhang , Ruizhi Yang , Shoushan Zhang

The Cherenkov Telescope Array (CTA) is an initiative to build a next-generation observatory for very-high energy $\gamma$-rays. Its expected large effective area ($\mathcal{O}(10^{7} \mathrm{m}^2)$) and energy threshold as low as 25 GeV…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Manuel Paz Arribas , Ullrich Schwanke , Ralf Wischnewski

Gamma-Ray Resonant Absorption (GRA) is an automatic-decision radiographic screening technique that combines high radiation penetration with very good sensitivity and specificity to nitrogenous explosives. The method is particularly…

The Fermi Large Area Telescope (LAT) has amassed a large data set of primary cosmic-ray protons throughout its mission. The LAT's wide field of view and full-sky survey capabilities make it an excellent instrument for studying cosmic-ray…

High Energy Astrophysical Phenomena · Physics 2019-03-08 LAT Collaboration

The Telescope Array (TA) observatory, located in midwest Utah, USA, is designed to detect ultra high energy cosmic rays whose energy is greater than 1 EeV. TA mainly consists of two types of detector. The first type is the atmospheric…

Instrumentation and Methods for Astrophysics · Physics 2014-02-03 Takeshi Okuda

Characterization of a hybrid ${\it telescope}$ with gas transmission detector ($\Delta$E) and a solid-state stop detector (E) has been fabricated for detection of low energy $\alpha$ particles between 5 to 1 MeV. The detector is developed…

Instrumentation and Detectors · Physics 2021-08-26 Rajkumar Santra , Subinit Roy

A search is performed for top-quark pairs ($t\bar{t}$) produced together with a photon ($\gamma$) with transverse energy greater than 20 GeV using a sample of $t\bar{t}$ candidate events in final states with jets, missing transverse…

High Energy Physics - Experiment · Physics 2015-05-21 ATLAS Collaboration

We present the results of experimental studies on the transverse and longitudinal dynamics of a single electron in the IOTA storage ring. IOTA is a flexible machine dedicated to beam physics experiments with electrons and protons. A method…

Accelerator Physics · Physics 2021-12-22 Aleksandr Romanov , James Santucci , Giulio Stancari , Alexander Valishev , Nikita Kuklev

Jets with different radius parameters $R$ are an important tool to probe quantum chromodynamics processes at different angular scales. Jets with small $R=0.2$ are instrumental in measurements of the substructure of large-$R$ jets resulting…

High Energy Physics - Experiment · Physics 2025-08-04 ATLAS Collaboration

First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 2015. Nearly a half million electron + positron events are…

Prompt photons are a powerful tool to study heavy ion collisions. Their production rates provide access to the initial state parton distribution functions and also provide a means to calibrate the expected energy of jets that are produced…

High Energy Physics - Experiment · Physics 2019-08-21 Peter Steinberg

The emission of neutrons from heavy ion reactions is an important observable for studying the asymmetric nuclear equation of state and the reaction dynamics. A 20-unit neutron array has been developed and mounted on the compact spectrometer…