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An understanding of collective effects is of fundamental importance for the design and optimisation of the performance of modern accelerators. In particular, the design of an accelerator with strict requirements on the beam quality, such as…

Simple expressions for the radius and magnetic field of a system emitting Synchrotron-self-absorbed radio and Inverse Compton X-rays are derived from first principles which involve observable quantities only. These expressions are useful…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Boaz Katz

The emissivity for the neutrino pair synchrotron radiation in strong magnetic fields has been calculated both analytically and numerically for high densities and moderate temperatures, as can be found in neutron stars. Under these…

Astrophysics · Physics 2009-10-28 A. Vidaurre , A. Perez , H. Sivak , J. Bernabeu , J. M. Ibanez

I investigate the effect of non-uniform magnetic fields in the extended structures of radio galaxies on the observed synchrotron and inverse-Compton emission. On the assumption of an isotropic field, with a given power spectrum and a…

High Energy Astrophysical Phenomena · Physics 2015-06-16 M. J. Hardcastle

When polarized electron bunches are injected and circulated in a high-energy storage ring, the polarization of the bunches relaxes to the asymptotic value of the radiative polarization, caused by the synchrotron radiation. Hence the bunches…

Accelerator Physics · Physics 2025-02-04 S. R. Mane

High-power electron beams are sought-after tools in support to a wide array of societal applications. This paper investigates the production of high-power electron beams by combining a high-current field-emission electron source to a…

Accelerator Physics · Physics 2018-12-26 O. Mohsen , I. Gonin , R. Kephart , T. Khabiboulline , P. Piot , N. Solyak , J. C. Thangaraj , V. Yakovlev

Fast radio bursts (FRBs) are mysterious transient sources. If extragalactic, as suggested by their relative large dispersion measures, their brightness temperatures must be extremely high. Some FRB models (e.g. young pulsar model, magnetar…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Yuan-Pei Yang , Bing Zhang , Zi-Gao Dai

Previous studies have considered synchrotron as the emission mechanism for prompt Gamma-Ray Bursts (GRBs). These works have shown that the electrons must cool on a timescale comparable to the dynamic time at the source in order to satisfy…

High Energy Astrophysical Phenomena · Physics 2018-02-28 Paz Beniamini , Rodolfo Barniol Duran , Dimitrios Giannios

We consider the effects of inverse Compton scattering of synchrotron photons from relativistic electrons in GRB afterglows. We compute the spectrum of the inverse Compton emission and find that it can dominate the total cooling rate of the…

Astrophysics · Physics 2008-11-26 Re'em Sari , Ann A. Esin

The most significant advances in the accelerator-based light sources (i.e., x-ray free electron lasers) are driven by the production of the high final peak current in the last several decades. As a prerequisite to attain the proposed high…

Accelerator Physics · Physics 2024-03-19 Fancong Zeng , Yi Jiao , Weihang Liu , Cheng-Ying Tsai

Spin dependencies of the intensity and polarization of the synchrotron radiation of the longitudinally polarized particle performing uniform circular motion in the magnetic field are investigated.

Accelerator Physics · Physics 2007-05-23 G. V. Grigoryan , R. P. Grigoryan

Some high-energy experiments have suffered from synchrotron-radiation background. As a measure, we have developed a new calculation method of synchrotron radiation based on a real beam orbit, aiming at quantitative estimations and the…

Accelerator Physics · Physics 2016-09-08 Tetsuo Abe , Hitoshi Yamamoto

In this work, we present a physical and theoretical description of the significant degradation of X-ray spatial coherence properties due to the use of grating monochromators at synchrotron facilities. We present a comprehensive study of the…

Optics · Physics 2024-06-17 Ruslan Khubbutdinov , Gianluca Geloni , Evgeny Saldin , Kai Bagschik

We describe a geometric model for synchrotron and synchrotron self-Compton (SSC) radiation from blazar jets, involving multiple emission zones with turbulent magnetic fields and fully self-consistent seed photon mixing for SSC. Including…

High Energy Astrophysical Phenomena · Physics 2020-01-08 A. L. Peirson , R. W. Romani

Coherent fraction is a concept widely used in the synchrotron radiation community. Here I discuss the meaning of coherent fraction, an accurate way to define it, and the different formulations found in literature to calculate it. After…

Accelerator Physics · Physics 2018-05-01 Manuel Sanchez del Rio

Bunches of high charge (up to 10 nC) are compressed in length in the CTF II magnetic chicane to less than 0.2 mm rms. The short bunches radiate coherently in the chicane magnetic field, and the horizontal and longitudinal phase space…

Accelerator Physics · Physics 2014-11-18 H. H. Braun , R. Corsini , L. Groening , F. Zhou , A. Kabel , T. Raubenheimer , R. Li , T. Limberg

We show that an upper limit on the maximum brightness temperature for a self-absorbed incoherent synchrotron radio source is obtained from the size of its gyro orbits, which in turn must lie well within the confines of the total source…

High Energy Astrophysical Phenomena · Physics 2013-06-11 Ashok K. Singal

First thoughts on the design of the beam vacuum system for the High Energy LHC (HE-LHC) are given with a particular focus on the impact of the synchrotron radiation. In the HE-LHC, the vacuum dynamic effects induced by the circulating beams…

Accelerator Physics · Physics 2011-08-09 J. M. Jimenez

High harmonic cavities are widely used in electron storage rings to lengthen the bunch, thereby enhancing the Touschek lifetime, reducing the IBS effect, as well as providing Landau damping. When the RF phase is modulated in such a dual-RF…

Accelerator Physics · Physics 2025-02-19 Bocheng Jiang , Yao Zhang , Cheng-Ying Tsai

Although the physical origin of prompt emission in gamma-ray bursts (GRBs) remains inconclusive, previous studies have considered the synchrotron radiation of relativistic electrons as a promising mechanism. These works usually adopted a…

High Energy Astrophysical Phenomena · Physics 2020-04-22 Kuan Liu , Da-Bin Lin , Kai Wang , Li Zhou , Xiang-Gao Wang , En-Wei Liang