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KEK-ATF is studying low emittance, multi-bunch electron beam for the future linear collider. The energy instability of the 1.5 GeV linac has been a problem making the beam injection to the damping ring unstable. Because the unstable beam…

Accelerator Physics · Physics 2007-05-23 M. Kuriki , H. Hayano , T. Naito , T. Okugi , V. Vogel

The advance in laser plasma acceleration techniques pushes the regime of the resulting accelerated particles to higher energies and intensities. In particular the upcoming experiments with the FLAME laser at LNF will enter the GeV regime…

Hybrid fast-charging stations with battery storage and local renewable generation can facilitate low-carbon electric vehicle (EV) charging, while reducing the stress on the distribution grid. This paper proposes energy management strategies…

Systems and Control · Electrical Eng. & Systems 2022-03-16 Jan Engelhardt , Jan Martin Zepter , Tatiana Gabderakhmanova , Mattia Marinelli

Radio emissions from young supernovae (~ 1 year after the explosion) show a peculiar feature in the relativistic electron population at a shock wave, where their energy distribution is steeper than typically found in supernova remnants…

High Energy Astrophysical Phenomena · Physics 2015-06-12 keiichi Maeda

The Fermilab Linac delivers 400 MeV H- beam to the rest of the accelerator chain. Providing stable intensity, energy, and emittance is key since it directly affects downstream machines. To operate high current beam, accelerators must…

Accelerator Physics · Physics 2023-07-11 R. Sharankova , M. Mwaniki , K. Seiya , M. Wesley

This work revisits the electrostatic instability for blazar-induced pair beams propagating through IGM with the methods of linear analysis and PIC simulations. We study the impact of the realistic distribution function of pairs resulting…

High Energy Astrophysical Phenomena · Physics 2018-04-25 S. Vafin , I. Rafighi , M. Pohl , J. Niemiec

A model for the evaluation of charge-state distributions of fast heavy ions in solid targets is being developed since late eighties in terms of ETACHA code. Time to time it is being updated to deal with more number of electrons and…

Atomic Physics · Physics 2018-10-17 D. K. Swami , T. Nandi

The problem of electromagnetic emission generation in plasma with electron beams is relevant both for practical applications and for interpretation of radio emission processes in astrophysical systems. In this work, we consider the case of…

Plasma Physics · Physics 2023-08-08 Vladimir Annenkov , Evgeniia Volchok , Igor Timofeev

We present a theoretical investigation of the chromatic dynamics of the witness beam within a plasma based accelerator. We derive the single particle motion of an electron in an ion column within a nonlinear, blowout wake including…

Accelerator Physics · Physics 2022-11-30 R. Ariniello , C. E. Doss , V. Lee , C. Hansel , J. R. Cary , M. D. Litos

We present a study of factors affecting the energy spread of ion beams extracted from a Charge Breeder Electron Cyclotron Resonance Ion Source (CB-ECRIS). The comprehensive simulations, supported by experiments with a Retarding Field…

Despite the successful demonstration of compact free electron lasers (FELs) driven by laser wakefield accelerators (LWFAs), the pursuit of further enhancements in high-gain compact FELs presents a challenge due to the limitations in…

Plasma Physics · Physics 2025-01-20 Ke Feng , Kangnan Jiang , Runshu Hu , Chen Lv , Xizhuan Chen , Hai Jiang , Shixia Luan , Wentao Wang , Ruxin Li

An interest for the low-energy range of the nonextensive distribution function arises from the study of radiative recombination in electron cooling devices in particle accelerators, whose experimentally measured reaction rates are much…

Atomic Physics · Physics 2009-11-11 G. Maero , P. Quarati , F. Ferro

Beam breakup instability is a potential issue for all particle accelerators and is often the limiting factor for the maximum beam current that can be achieved. This is particularly relevant for Energy Recovery Linacs with multiple passes…

Accelerator Physics · Physics 2021-06-30 Sadiq Setiniyaz , Robert Apsimon , Peter H. Williams

This paper presents an experimental investigation into the energy partitioning of quasi-static electrostatic discharge (ESD) events in air, a scenario in which the discharge occurs across a gap length that can be considered fixed. We…

Plasma Physics · Physics 2026-02-10 Claudia A. M. Schrama , Calvin Bavor , P. David Flammer , Charles G. Durfee

Purpose: In this study, procedures were developed to achieve efficient reversible conversion of a clinical linear accelerator (LINAC) and deliver electron FLASH (eFLASH) or conventional beams to the treatment room isocenter. Material &…

We report on the first through-wafer silicon-based Electrostatic Quadrupole Array (ESQA) to focus high energy ion beams. This device is a key enabler for a wafer based accelerator architecture that lends itself to orders-of-magnitude…

Accelerator Physics · Physics 2018-02-09 K. B. Vinayakumar , A. Persaud , P. A. Seidl , Q. Ji , W. L. Waldron , T. Schenkel , S. Ardanuc , A. Lal

Energy-frontier accelerators provide powerful tools performing high precision measurements confirming the fundamental of the physics and broadening new research horizons. Such machines are either driven by circular or linear accelerators.…

Accelerator Physics · Physics 2022-01-26 I. V. Konoplev , S. A. Bogacz , Ya. Shashkov , M. A. Gusarova

Plasma wakefield accelerators are capable of sustaining gigavolt-per-centimeter accelerating fields, surpassing the electric breakdown threshold in state-of-the-art accelerator modules by 3-4 orders of magnitude. Beam-driven wakefields…

A process of energy transfer is demonstrated in non-equilibrium charged particle beams with anisotropy and space charge. Equipartitioning of energy between available degrees of freedom occurs in just a few betatron wavelengths, without halo…

Accelerator Physics · Physics 2007-05-23 R. A. Kishek , P. G. O'Shea , M. Reiser

Laser plasma acceleration at kilohertz repetition rate has recently been shown to work in two different regimes, with pulse lengths of either 30 fs or 3.5 fs. We now report on a systematic study in which a large range of pulse durations and…