Multi-GeV Laser Wakefield Electron Acceleration with PW Lasers

Kim, Hyung Taek; Pathak, Vishwa Bandhu; Hojbota, Calin Ioan; Mirzaie, Mohammad; Pae, Ki Hong; Kim, Chul Min; Yoon, Jun‐Bo; Sung, Jae Hee; Lee, Seong Ku

doi:10.3390/app11135831

Cited by 17 publications

(9 citation statements)

References 49 publications

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“…Laser–plasma interaction has led to many developments in terahertz generation (Sobhani, Dadar & Feili 2017; Sun, Wang & Zhang 2022), second-harmonic generation (Upadhyay & Tripathi 2005; Sharma, Thakur & Kant 2020), plasma-wakefield excitation for particle acceleration (Kim et al 2021; Kad & Singh 2022 b ), etc. Plasma being a nonlinear medium has an extraordinarily high damage threshold, and is thus capable of sustaining a high-intensity electric field (Hassan et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Generation of terahertz radiation by a Hermite–Gaussian laser beam inside magnetoplasma with a density ramp

2023

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In the present scheme of work, the Hermite–Gaussian (HG) laser beam dynamics has been investigated under the influence of an upward density ramp inside magnetized plasma, where both relativistic and ponderomotive nonlinearities are operative. One can achieve self-focusing of laser beam due to the change in the medium's dielectric function, which comes into operation due to the expulsion of plasma electrons from the high intensity to the low-intensity region by ponderomotive force and their motion at relativistic speeds. The dynamics of the laser beam and terahertz generation have been investigated by using the moment theory approach. It has been observed from the present analysis that the dynamics of the laser beam and the production of terahertz radiations strongly depends upon the HG laser beam and plasma parameters. In addition to this, the effect of density ramp and magnetic field has also been investigated on the efficiency of terahertz generation. It has been observed that higher-order modes of the HG laser beam play a dominant role in the production of terahertz radiations.

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Section: Introductionmentioning

confidence: 99%

Generation of terahertz radiation by a Hermite–Gaussian laser beam inside magnetoplasma with a density ramp

2023

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“…It is possible to excite the wakefield in other environments, for example, by a beam in a dielectric, in which the accelerating gradient 13.8 GV/m is achieved [16]. To implement the wakefield acceleration method in a solid-density plasma, new types of lasers are required, which, in many respects, remain a promising idea [17,18]. The excitation of a wakefield in a dielectric was also previously investigated (see [19,20]).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Way of Phase Synchronization of a Self-Injected Bunch and an Accelerating Wakefield in Solid-State Plasma

2022

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The electron acceleration, in a laser wakefield accelerator, controlled through plasma density inhomogeneity is studied on a basis of 2.5-dimensional particle-in-cell simulation. The acceleration requires a concordance of the density scale length and shift of the accelerated electron bunch relative to wake bubble during electron acceleration. This paper considers the excitation of a wakefield in plasma with a density equal to the density of free electrons in metals, solid-state plasma (the original idea of Prof. T. Tajima), in the context of studying the wakefield process. As is known in the wake process, as the wake bubble moves through the plasma, the self-injected electron bunch shifts along the wake bubble. Then, the self-injected bunch falls into the phase of deceleration of the wake wave. In this paper, support of the acceleration process by maintaining the position of the self-injected electron bunch using an inhomogeneous plasma is proposed. It is confirmed that the method of maintaining phase synchronization proposed in the article by using a nonuniform plasma leads to an increase in the accelerating gradient and energy of the accelerated electron bunch in comparison with the case of self-injection and acceleration in a homogeneous plasma.

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“…Laser-wakefield-accelerators (LWFA) have the technological potential to supplant conventional-radiofrequency-accelerators and also bring about a new generation of compact-tabletop-accelerators 1,2 . At present, LWFAs can produce stable electron beams with ultrashort duration, GeV-scale energy, and very low emittance from centimeter-scale acceleration stages at high repetition rates [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Impact of Electron Transport Models on Capillary Discharge Plasmas

Diaw,

Coleman,

Cook

et al. 2022

Preprint

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Magnetohydrodynamics (MHD) can be used to model capillary discharge waveguides in laser-wakefield accelerators. However, the predictive capability of MHD can suffer due to poor microscopic closure models. Here, we study the impact of electron heating and thermal conduction on capillary waveguide performance as part of an effort to understand and quantify uncertainties in modeling and designing next-generation plasma accelerators. To do so, we perform two-dimensional high-resolution MHD simulations using an argon-filled capillary discharge waveguide with three different electron transport coefficients models. The models tested include (i) Davies et al. (ii) Spitzer, and (iii) Epperlein-Haines (EH). We found that the EH model overestimates the electron temperature inside the channel by over 20% while predicting a lower azimuthal magnetic field. Moreover, the Spitzer model, often used in MHD simulations for plasma-based accelerators, predicts a significantly higher electron temperature than the other models suggest.

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Multi-GeV Laser Wakefield Electron Acceleration with PW Lasers

Cited by 17 publications

References 49 publications

Generation of terahertz radiation by a Hermite–Gaussian laser beam inside magnetoplasma with a density ramp

Generation of terahertz radiation by a Hermite–Gaussian laser beam inside magnetoplasma with a density ramp

Investigation of the Way of Phase Synchronization of a Self-Injected Bunch and an Accelerating Wakefield in Solid-State Plasma

Impact of Electron Transport Models on Capillary Discharge Plasmas

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