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Fast radio bursts (FRBs) are bright, short-duration radio transients with very high brightness temperatures implying highly coherent emission. We suggest that the FRBs are caused by the self-focusing of an electron beam interacting with an…

High Energy Astrophysical Phenomena · Physics 2020-03-18 Mustafa Doğan , Kazım Yavuz Ekşi

We access the possibility of using the conventional RF accelerator as an injector for the plasma driven wakefield accelerator. Conventional accelerators deliver high quality beams with low emittance and low energy spread. Once injected into…

The demands on performance of advanced linear accelerator based facilities strongly depend on the quality of the particle beams produced by such machines. Indeed, state-of-the-art applications in photon production and high-energy physics…

We discuss a new compact gamma-ray source aiming at high spectral density, up to two orders of magnitude higher than currently available bremsstrahlung sources, and conceptually similar to Compton Sources based on conventional linear…

Plasma Physics · Physics 2015-06-12 L. A. Gizzi , M. P. Anania , G. Gatti , D. Giulietti , G. Grittani , M. Kando , M. Krus , L. Labate , T. Levato , Y. Oishi , F. Rossi

Intense lasers can accelerate electrons to very high energy over a short distance. Such compact accelerators have several potential applications including fast ignition, high energy physics, and radiography. Among the various schemes of…

The high gradients potentially achievable in distributed-coupling C-band photoinjectors make them attractive for many high brightness applications. Here we discuss optimization results for a 1.6 cell C-band photoinjector with a 240 MV/m…

Accelerator Physics · Physics 2025-09-16 M. Kaemingk , P. M. Anisimov , J. M. Maxson , J. B. Rosenzweig , E. I. Simakov , H. Xu

In strong field laser physics it is a common practice to use the high-order harmonic cutoff to estimate the laser intensity of the pulse that generates the harmonic radiation. Based on the semiclassical arguments it is possible to find a…

Atomic Physics · Physics 2015-06-11 T. Shaaran , M. F. Ciappina , M. Lewenstein

We propose a new approach to high-intensity relativistic laser-driven electron acceleration in a plasma. Here, we demonstrate that a plasma wave generated by a stimulated forward-scattering of an incident laser pulse can be in the longest…

Plasma Physics · Physics 2015-10-28 S. P. Sadykova , A. Rukhadze , T. G. Samkharadze

It has been known since decades that the alignment of a beam of high-energy electrons with particular crystal directions involves a significant increase of bremsstrahlung radiation emission. This enhancement lies at the conceptual…

Relativistic electron beams produced by intense lasers over short distances have important applications in high energy density physics and medical technologies. Vacuum laser acceleration with plasma mirrors injectors has garnered…

Plasma Physics · Physics 2025-11-19 Jiaxin Liu , Zeyue Pang , Hehanlin Wang , Zi-Yu Chen

Integrable optics is an innovation in particle accelerator design that provides strong nonlinear focusing while avoiding parametric resonances. One promising application of integrable optics is to overcome the traditional limits on…

Accelerator Physics · Physics 2017-03-20 Jeffrey Eldred , Alexander Valishev

Photoinjectors are widely used for linear accelerators as electron sources to generate high-brightness electron beam. Drive laser, which determines the timing structure and quality of the electron beam, is a crucial device of photoinjector.…

Accelerator Physics · Physics 2016-08-03 Zhiwen Wang , Senlin Huang , Lin Lin , Gang Zhao , Shengwen Quan , Kexin Liu , Jiaer Chen

To meet requirements of high performance THz-FEL (Free Electron Laser), a compact scheme of FEL injector was proposed. Thermionic cathode was chosen to emit electrons instead of photo-cathode with complex structure and high cost. The…

Accelerator Physics · Physics 2015-06-16 Tong-ning Hu , Qu-shan Chen , Yuan-ji Pei , Ji Li , Bin Qin

The ultrafast and ultracold electron source, based on laser cooling and trapping of an atomic gas and its subsequent near-threshold photoionization, is capable of generating electron bunches with a high transverse brightness at energies of…

For development of compact ultrafast electron source system, we are currently designing a short-pulse RF-gun with RF focusing structure by means of a series of comprehensive modeling analysis processes. EM design of a 2.5 cell resonant…

Accelerator Physics · Physics 2014-09-19 Alexander Grabenhofer , Douglas W. Eaton , Young-Min Shin

Particle accelerators for high energy physics will generate TeV-scale particle beams in large, multi-Km size machines colliding high brightness beams at the interaction point [1-4]. The high luminosity in such machines is achieved by…

Since the discovery of electrons more than a century ago, the generation, transport and characterization of electron beams has been an active field of research. Breakthroughs in this field have led to applications as far reaching as cancer…

Accelerator Physics · Physics 2014-04-01 Triveni Rao , David H. Dowell

We study the spectra of emission of a system composed by an atom, tightly confined inside a high-finesse resonator, when the atom is driven by a laser and is at steady state of the cooling dynamics induced by laser and cavity field. In…

Quantum Physics · Physics 2009-11-13 Marc Bienert , J. Mauricio Torres , Stefano Zippilli , Giovanna Morigi

We theoretically investigate high-order harmonic generation (HHG) in Rydberg atoms driven by spatially inhomogeneous laser fields, induced, for instance, by plasmonic enhancement. It is well known that the laser intensity should to exceed…

Atomic Physics · Physics 2016-07-08 Y. Tikman , I. Yavuz , M. F. Ciappina , A. Chacon , Z. Altun , M. Lewenstein

Using a high energy electron beam for the imaging of high density matter with both high spatial-temporal and areal density resolution under extreme states of temperature and pressure is one of the critical challenges in high energy density…