Beam quality improvement of ionization injected electrons by using chirped pulse in wakefield acceleration

Cui, Yun; Zhang, Guo-Bo; Ma, Yunlong; Zou, D. B.; Yang, Xiaohu; Chen, Min; Liu, Jianxun; Ge, Z. Y.; Tian, Lichao; Gan, Long-Fei; Shao, F. Q.

doi:10.1088/1361-6587/ab249e

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…Additionally, our recent experimental work [30] and theoretical predictions by different groups demonstrate [31,32] that the ion acceleration efficiency can be further enhanced by a change of laser pulse temporal characteristics involving laser pulse duration, shape and chirp. Similar behaviour has been demonstrated in case of accelerating electrons with the Laser Wakefield Acceleration Scheme also [33][34][35][36].…”

Section: Introductionsupporting

confidence: 76%

Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Tayyab

Bagchi

Moorti

et al. 2019

Plasma Phys. Control. Fusion

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We report an experimental investigation on nuclear reactions using an intense, ultra-short laseraccelerated proton and deuteron beam generated by the interaction of 25 fs, 150 TW Ti: sapphire laser pulse with normal thin foils and foils containing deuterium atoms. The production of a positron-emitting short-lived 11 C radio-isotope from the interaction of protons and deuterium ions with a solid boron palette by means of 11 B (p, n) 11 C and 10 B (d, n) 11 C nuclear reactions was studied. The maximum radioactivity in the optimized laser irradiation condition was found to be 5.2 kBq per laser shot, which corresponds to ∼9×10 6 atoms of 11 C isotopes using the 11 B (p, n) 11 C reaction. The relative efficiency of 11 C production using a proton and deuteron beam was also explored experimentally. About 30 % enhancement in 11 C activity was observed with CD 2 coated targets. It was also found that because of the relatively low deuteron energy threshold of the reaction 10 B (d, n) 11 C, even the low energy part of the accelerated deuterons in the spectrum can be used for efficient 11 C production. In the same setup, the proton-induced fusion reaction in the boron target (p+ 5 B 11 ⇒3α+8.7 MeV) was also studied. The resultant fusion yield and alpha particle energy spectrum was measured.

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Section: Introductionsupporting

confidence: 76%

Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Tayyab

Bagchi

Moorti

et al. 2019

Plasma Phys. Control. Fusion

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“…This mechanism provided the means to dramatically enhance the beam quality in the blowout regime. Another work [36], investigated the beam quality improvement of an ionization-induced electron injection by using a chirped pulse in the LWFA. Since the laser-driven wake is influenced by both the chirp frequency functions and applied magnetic field, it may be helpful to study their effects on the wakefield and then electron dynamics be injected externally into the wakefield.…”

Section: Introductionmentioning

confidence: 99%

Laser wakefield acceleration of electrons in a magnetically controlled plasma

Nikrah,

Jafari

2023

Plasma Phys. Control. Fusion

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In the present study, laser wakefield acceleration of electrons in a magnetically controlled plasma was investigated. The results indicated that by employing a linearly chirped laser pulse propagating through magnetized plasma with a reversed external magnetic field, higher energy electrons are obtained compared to unmagnetized plasma and/or non-chirped laser pulse. Besides, by considering an appropriate chirping constant magnitude and an axial external magnetic field, one could obtain remarkable GeV electron energies. It was also found that the effect of external magnetic field direction on the electron energy is not sensed much in the mildly relativistic regime, while the reversed magnetic ﬁeld increases the peak of electron energy gains compared with the forward magnetic field in the highly relativistic regime. For the mildly relativistic case, peak energy of 412 MeV and relative energy spread of 7% was obtained. In addition, for high relativistic case, peak energy of 1.55 GeV was obtained.

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“…In order to overcome these disadvantages, many schemes have been proposed to improve the beam quality of ionization injection. [29][30][31] However, more simple and efficient schemes of ionization injection are still necessary.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the beam quality in ionization injection by a tailoring gas profile*

Cui

Zhang

et al. 2021

Chinese Phys. B

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A new scheme is proposed to improve the electron beam quality of ionization-induced injection by tailoring gas profile in laser wakefield acceleration. Two-dimensional particle-in-cell simulations show that the ionization-induced injection mainly occurs in high-density stage and automatically truncates in low-density stage due to the decrease of the wakefield potential difference. The beam loading can be compensated by the elongated beam resulting from the density transition stage. The beam quality can be improved by shorter injection distance and beam loading effect. A quasi-monoenergetic electron beam with a central energy of 258 MeV and an energy spread of 5.1% is obtained under certain laser-plasma conditions.

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Beam quality improvement of ionization injected electrons by using chirped pulse in wakefield acceleration

Cited by 4 publications

References 35 publications

Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Experimental investigation on nuclear reactions using a laser-accelerated proton and deuteron beam

Laser wakefield acceleration of electrons in a magnetically controlled plasma

Optimization of the beam quality in ionization injection by a tailoring gas profile*

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