Beam quality improvement in the later stage of radiation pressure acceleration

Liu, Peng; Qu, Junfan; Li, Xiangyang; Li, Xiaofeng; Cai, Ling; Tang, Jiayong; Kong, Q.

doi:10.1103/physrevaccelbeams.23.011303

Cited by 4 publications

(4 citation statements)

References 36 publications

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“…为提高质子束品质, 特别是质子束能量. 研究者们设计不同的靶构型, 例如双层靶 [22,23] 、通道靶 [24,25] 等; 提出新型加速机制, 例如静电电容加速 [26] 、级联加速 [27,28] 离子的初始电荷状态根据 Ammosov-Delone-Krainov (ADK)理论 [30,31]…”

Section: 引言unclassified

Simulation study of quasi-monoenergetic high-energy proton beam based on multiple laser beams driving

Wang¹,

Liao²,

Zhao³

et al. 2023

Acta Phys. Sin.

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High-energy proton beams have extensive and important applications. Traditional proton accelerators are bulky and costly. The development of high-power laser pulse technology provides a new proton acceleration scheme based on the interaction between laser and plasma, which has the advantage of miniaturization. Furthermore, compared with traditional proton accelerators, the proton acceleration gradient by high-power laser pulses can be increased by three orders of magnitude. The high brightness, narrow pulse width, and good directionality proton beams can be generated in theory within a very small effective size, and they are suitable for fields such as nuclear physics and particle physics, ion beam fast ignition, medical treatment, proton beam detection, etc. In order to realize laser proton acceleration, a large amount of research with different target configurations and acceleration mechanisms has been reported on proton acceleration driven by ultrashort and high-power lasers. However, due to the limitation of laser intensity, the energy of proton beam driven by a single-beam laser is difficult to improve to meet the needs of medical applications. In this paper, a new method of driving proton acceleration by multiple ultrashort high-power lasers with grazing incidence on both sides of the microstrip target is proposed. With two-beams driving settings, a proton beam with energy divergence of about 3% and energy of about 165 MeV can be obtained. The simulation results with two-dimensional particle-in-cell show that the laser extracts a large number of collimated high-energy electron charges on both sides of the solid target and injects them into the rear of the target. A longitudinal bunching field is built at the rear of the target to drive proton acceleration and bunch to form a quasi-monoenergetic high-energy proton beam. The research also shows that the proton beam with energy divergence of about 2% and energy of about 250 MeV can be obtained by using four grazing ultrashort high-power lasers on both sides of the microstrip target. The mechanism of multi-laser beams driving proton acceleration provides a new idea for the energy enhancement of the proton beam, and the quasi-monoenergetic high-energy proton beam is expected to be applied in the field of medical treatment.

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Section: 引言unclassified

Simulation study of quasi-monoenergetic high-energy proton beam based on multiple laser beams driving

Wang¹,

Liao²,

Zhao³

et al. 2023

Acta Phys. Sin.

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“…In the past few decades, both the LWFA and PWFA have been widely studied in electron acceleration (Pukhov, Sheng & Meyer ter Vehn 1999;Blumenfeld et al 2007;Wang et al 2013;Litos et al 2016;Gonsalves et al 2019;Rosmej et al 2020), and much progress has already been made. At the same time, the interaction of pulsed laser with high density plasma has also been used to accelerate ions (Qiao et al 2009;Liu et al 2020). These energetic ions have wide applications, such as astrophysics (Remington et al 2000), proton radiography (King et al 1999), tumour therapy (Bulanov & Khoroshkov 2002) and fast ignition (Roth et al 2001).…”

Section: Abstract: Intense Particle Beams Plasma Applicationsmentioning

confidence: 99%

“…2009; Liu et al. 2020). These energetic ions have wide applications, such as astrophysics (Remington et al.…”

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confidence: 99%

High-energy proton beam acceleration driven by an intense ultrarelativistic electron beam in plasma

Fan²,

Qu³

et al. 2022

J. Plasma Phys.

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We report a generation of energetic protons by the interaction of a high-energy electron driving beam with an underdense plasma slab. After an interaction period of approximately 4000 fs, a proton beam with maximum energy greater than 250 MeV can be achieved by applying a driving beam with energy 1.0 GeV to a 200 $\mathrm {\mu }$ m plasma slab. Our two-dimensional particle-in-cell simulations also show that the proton acceleration process can be divided into two stages. In the first stage, a strong positive longitudinal electric field appears near the rear boundary of the plasma slab after the driving beam has passed through it. This acceleration process is similar to the target normal sheath acceleration scheme by the interaction between intense pulsed laser with overdense plasma targets. In the second stage, the accelerated protons experience a long-range acceleration process with a two-stream instability between the high-energy driving beam and the proton beam. Further analyses show that this accelerated proton beam is equipped with the property of good collimation and high energy. This scheme presents a new way for proton or ion acceleration on some special occasions.

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“…With the advent of intense laser technology, plasma-based ion acceleration becomes a fast-growing topic with many applications in nuclear science, high-energy-density physics, and inertial confinement fusion [1][2][3]. Many researches have been conducted to examine different well-known laser ion acceleration mechanisms such as the target normal sheath acceleration (TNSA) [4][5][6], radiation pressure acceleration (RPA) [7][8][9][10], collisionless shock acceleration [11,12], breakout after-burner * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Efficient proton-carbon ions acceleration by the plasma-beat-wave mechanism in the presence of the axial magnetic field

Mehrangiz

Khoshbinfar

2023

Plasma Phys. Control. Fusion

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It is possible to generate the low-divergence ion bunches through the interaction of equally or slightly different counter-propagating laser pulses. In this paper, in the framework of plasma beat wave (PBW), we have numerically simulated the simultaneous acceleration of Carbon/Hydrogen ion beams. Using a two-dimensional particle-in-cell simulation, we have shown that in an HC plasma mixture with an optimal hydrogen ratio of 1:5, the laser reflectivity coefficient reduces up to about 4.6%. This condition may provide the acceleration of low-divergence H+ and C4+ ions beam. The cut-off energy for protons and C4+ ions are about 27 MeV and 410 MeV, respectively at nH=0.2 nC. The values increase by about 15.6% for protons and 21% for C4+ at nH=0.7 nC. In the presence of an axial magnetic field, the energy absorption arrives at its maximum at the values of Ωs/ωp=0.1, where Ωs and ωp are the gyro-frequency and plasma frequency, respectively. Here, the average kinetic energy of the accelerated ions raises by 17.9% and 7.3% for Carbon and proton ions, respectively. Compared to the magnetic field-free case, divergence angles were suppressed at approximately 24.2% and 20.3% for the Carbon ions and Hydrogen ions, respectively.

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Beam quality improvement in the later stage of radiation pressure acceleration

Cited by 4 publications

References 36 publications

Simulation study of quasi-monoenergetic high-energy proton beam based on multiple laser beams driving

Simulation study of quasi-monoenergetic high-energy proton beam based on multiple laser beams driving

High-energy proton beam acceleration driven by an intense ultrarelativistic electron beam in plasma

Efficient proton-carbon ions acceleration by the plasma-beat-wave mechanism in the presence of the axial magnetic field

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