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The process of electron-positron pair creation by a high-energy electron in a medium is analyzed. The spectral distribution over energies of created particles is calculated for the direct and cascade mechanisms of the process. The Coulomb…

High Energy Physics - Phenomenology · Physics 2009-02-19 V. N. Baier , V. M. Katkov

A novel, non-invasive method of measuring the beam energy at the International Linear Collider is proposed. Laser light collides head-on with beam particles and either the energy of the Compton scattered electrons near the kinematic…

Instrumentation and Detectors · Physics 2009-08-05 N. Muchnoi , H. J. Schreiber , M. Viti

Electron beam probe (EBP) is a new principle detector, which makes use of a low-intensity and low-energy electron beam to measure the transverse profile, bunch shape, beam neutralization and beam wake field of an intense beam with small…

An image or volume of interest in positron emission tomography (PET) is reconstructed from pairs of gamma rays emitted from a radioactive substance. Many image reconstruction methods are based on estimation of pixels or voxels on some…

Signal Processing · Electrical Eng. & Systems 2019-06-18 Azra Tafro , Damir Seršić , Ana Sović Kržić

The luminosity distribution in the effective $\gamma\gamma$ mass at photon collider has usually two peaks which are well separated: high energy peak with mean energy spread 5-7% and wide low energy peak.The low energy peak depends strongly…

High Energy Physics - Phenomenology · Physics 2011-09-13 I. F. Ginzburg , G. L. Kotkin

Distributed energy resources are better for the environment but may cause transformer overload in distribution grids, calling for recovering meter-transformer mapping to provide situational awareness, i.e., the transformer loading. The…

Optimization and Control · Mathematics 2022-05-23 Bilal Saleem , Yang Weng

A precise comparison of the cross sections for the elastic scattering of electrons and positrons on protons was performed recently at the VEPP-3 storage ring in Novosibirsk, Russia. To provide the proposed accuracy, the energies of the…

Time- and angle-resolved photoelectron spectroscopy with 13 fs temporal resolution is used to follow the different stages in the formation of a Fermi-Dirac distributed electron gas in graphite after absorption of an intense 7 fs laser…

X-ray free-electron lasers (XFELs) utilize high-density and high-energy electron bunches which are well-suited to produce Compton back-scattering radiation. Here we study back-scattered radiation pulses produced by the interaction of XFEL…

Accelerator Physics · Physics 2023-09-28 Eugene Bulyak , Svitozar Serkez , Gianluca Aldo Geloni

The NLC extraction line provides a secondary focal point with a low beta function and 2 cm dispersion which can be used for measurement of the beam energy spectrum. In this study, tracking simulations were performed to transport the 0.5 TeV…

Accelerator Physics · Physics 2008-11-26 Y. Nosochkov , T. O. Raubenheimer

We demonstrate theoretically that double angle resolved photoemission spectroscopy (2eARPES) can directly probe the existence of Cooper pairs away from the Fermi surface, and can thus provide insight into the characteristic energy scale…

Superconductivity · Physics 2024-04-25 Ka Ho Wong , Jack Zwettler , Henry Amir , Peter Abbamonte , Fahad Mahmood , Dirk K. Morr

Advanced computational tools that describe the interaction of electrons with structured nanophotonic materials are crucial for theoretical predictions, specific design tasks, and the interpretation of experimental results. These tools open…

Computational Physics · Physics 2026-02-16 P. Elli Stamatopoulou , Carsten Rockstuhl

We present a new publicly available dataset that contains simulated data of a novel calorimeter to be installed at the CERN Large Hadron Collider. This detector will have more than six-million channels with each channel capable of position,…

High Energy Physics - Experiment · Physics 2023-09-14 Roger Rusack , Bhargav Joshi , Alpana Alpana , Seema Sharma , Thomas Vadnais

A photon induced shower at $E_{prim}\ge 10^{18}$ eV exhibits very specific features and is different from a hadronic one. At such energies, the LPM effect delays in average the first interactions of the photon in the atmosphere and hence…

Astrophysics · Physics 2007-05-23 Pierre Billoir , Cecile Roucelle , Jean-Christophe Hamilton

Detailed measurements of the spectral structure of cosmic-ray electrons and positrons from 10.6 GeV to 7.5 TeV are presented from over 7 years of observations with the CALorimetric Electron Telescope (CALET) on the International Space…

We present the gas-phase infrared spectra of the phenyl cation, phenylium, in its perprotio C$_6$H$_5^+$ and perdeutero C$_6$D$_5^+$ forms, in the 260-1925 cm$^{-1}$ (5.2-38 $\mu$m) spectral range, and investigate the observed…

In this work a set of simulations that aim at the optimization of gaseous detectors for applications in X-ray fluorescence imaging in the energy range of 3 -- 30keV is presented. By studying the statistical distribution of the radiation…

Instrumentation and Detectors · Physics 2024-10-01 Geovane G. A. de Souza , Hugo Natal da Luz , Marco Bregant

The current detectors of gamma-ray emission specially at TeV energies have too poor resolution to determine whether this emission is produced in the jet or in the core, particularly of low luminous, non-blazar AGNs (like radio galaxies). In…

High Energy Astrophysical Phenomena · Physics 2016-10-28 Behrouz Khiali , Elisabete M. de Gouveia Dal Pino , Hélène Sol

The possibility of proton acceleration to very high energies in astrophysical sources may have unique observational consequences. In particular, the decay of secondary mesons created in the interaction of energetic protons with photons or…

High Energy Physics - Phenomenology · Physics 2007-05-23 Hylke B. J. Koers , Asaf Pe'er , Ralph A. M. J. Wijers

The pulsar light curves and energy spectra are explored in dissipative pulsar magnetospheres with the Aristotelian electrodynamics (AE), where particle acceleration is fully balanced with radiation reaction. The AE magnetospheres with…

High Energy Astrophysical Phenomena · Physics 2022-02-09 Gang Cao , Xiongbang Yang
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