0.56 GeV Laser Electron Acceleration in Ablative-Capillary-Discharge Plasma Channel

Kameshima, Takashi; Wang, Hong; Sugiyama, Kiyohiro; Wen, Xianlun; Yuchi, Wu; Tang, Chun; Zhu, Qinghua; Gu, Yuqiu; Zhang, Baohan; Peng, Hansheng; Kurokawa, S.; Chen, Liming; Tajima, T.; Kumita, T.; Nakajima, Kazuhisa

doi:10.1143/apex.1.066001

Cited by 43 publications

(32 citation statements)

References 21 publications

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“…Plasma waveguides for guiding ultraintense short laser pulses in plasmas are produced by a number of methods, including laser-induced hydrodynamic expansion [45−47] , pulsed discharges of an ablative capillary [4,5,48,49] or a gas-filled capillary [50,51] . However, the length of such a plasma channel has been limited to less than 10 cm and the plasma density has been created for n 0 10 17 cm −3 .…”

Section: Discussionmentioning

confidence: 99%

“…In this decade, vital researches on laser-driven plasmabased acceleration (LPA) concept [1] , high-energy, highquality electron beams with energies of the GeV-level in a cm-scale plasma [2−4] , qualities of a 1%-level energy spread [5] , a 1π-mm-mrad-level transverse emittance [6] , and a 1-fs-level bunch duration [7] , ensure that the stability of reproduction is as high as that of present highpower ultra-short-pulse lasers [8,9] . These high-energy high-quality particle beams make possible a wide range of applications in fundamental researches, medical and industrial uses.…”

Section: Introductionmentioning

confidence: 99%

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100-GeV large scale laser plasma electron acceleration by a multi-PW laser

Nakajima¹,

Lu²,

Zhao³

et al. 2013

中国光学快报

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We present three possible design options of laser plasma acceleration (LPA) for reaching a 100-GeV level energy by means of a multi-petawatt laser such as the 3.5-kJ, 500-fs PETawatt Aquitane Laser (PETAL) at French Alternative Energies and Atomic Energy Commission (CEA). Based on scaling of laser wakefield acceleration in the quasi-linear regime with the normalized vector potential a0 = 1.4(1.6), acceleration to 100 (130) GeV requires a 30-m-long plasma waveguide operated at the plasma density ne ≈ 7 × 10 15 cm −3 with a channel depth Δn/ne = 20%, while a nonlinear laser wakefield accelerator in the bubble regime with a0 2 can reach 100 GeV approximately in a 36/a0-m-long plasma through self-guiding. The third option is a hybrid concept that employs a ponderomotive channel created by a long leading pulse for guiding a short trailing driving laser pulse. The detail parameters for three options are evaluated, optimizing the operating plasma density at which a given energy gain is obtained over the dephasing length and the matched conditions for propagation of relativistic laser pulses in plasma channels, including the self-guiding. For the production of high-quality beams with 1%-level energy spread and a 1π-mm-mradlevel transverse normalized emittance at 100-MeV energy, a simple scheme based on the ionization-induced injection mechanism may be conceived. We investigate electron beam dynamics and effects of synchrotron radiation due to betatron motion by solving the beam dynamics equations on energy and beam radius numerically. For the bubble regime case with a0 = 4, radiative energy loss becomes 10% at the maximum energy of 90 GeV.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

100-GeV large scale laser plasma electron acceleration by a multi-PW laser

Nakajima¹,

Lu²,

Zhao³

et al. 2013

中国光学快报

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“…According to plasma acceleration theory, the electric field of the plasma wave is given by 96 ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi n e ½10 18 cm À3 p GV/m [16]; therefore, at the resonant density, ¼ 0:1 corresponds to 15 GV/m. This result suggests that, if we succeed in extending the laser propagating length to around 10 cm by using a capillary plasma [5,6,7,8,35,36], we can achieve a GeV-class accelerating cavity with a 10-cm length.…”

Section: Beat Wave Excitation By Beatmentioning

confidence: 92%

“…That is, a laser-driven plasma accelerator with a higher electric field than that produced by an RF accelerator [4]. For example, the laser plasma accelerators can achieve accelerations of nearly gigaelectronvolts within an acceleration length of only a few centimeters [5][6][7][8][9]. However, a practical laser plasma accelerator requires improved beam stability and repetition.…”

Section: Introductionmentioning

confidence: 99%

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

Mori

Kitagawa

2012

Appl. Phys. B

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A double-line terawatt beat laser (BEAT) is developed for exciting beat wave oscillations. BEAT consists of two oscillators and an amplification system including optical parametric chirped-pulse amplification (OPCPA) in which two individual pulses with wavelength separations of 10-35 nm are amplified, recompressed, and focused as a single beam. The recompressed pulse trace shows that a 150-fs pulse duration full width at half maximum was modulated at a beating period of 72 fs. This beating period matches a resonant excitation of plasma wave with an electron density of 2.5 9 10 18 cm -3 , resulting in excitation of a beat wave in hydrogen plasma with wave amplitude of 15 GV/m. The multiple beating oscillations can amplify the plasma wave and improve its structure. This scheme would be ideal for stabilizing the plasma wave strength in the plasma cavity and for realizing a practical laser plasma accelerator.

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“…In this decade, active research has been carried out on the laser plasma acceleration concept [1] in order to achieve highenergy, high-quality electron beams with GeV energy in a cm-scale plasma [2][3][4][5][6] , 1%-level energy spread [7] , 1-mmmrad-level transverse emittance [8] and 1-fs-level bunch duration [9] , ensuring that the stability of reproduction is as high as that of present high-power ultrashort-pulse lasers [10] . Recently, staged laser plasma acceleration [11,12] has been successfully demonstrated in conjunction with ionizationinduced injection [13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Scaling and design of high-energy laser plasma electron acceleration

Nakajima

Kim

Jeong

et al. 2015

High Pow Laser Sci Eng

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Recently there has been great progress in laser-driven plasma-based accelerators by exploiting high-power lasers, where electron beams can be accelerated to multi-GeV energy in a centimeter-scale plasma due to the laser wakefield acceleration mechanism. While, to date, worldwide research on laser plasma accelerators has been focused on the creation of compact particle and radiation sources for basic sciences, medical and industrial applications, there is great interest in applications for high-energy physics and astrophysics, exploring unprecedented high-energy frontier phenomena. In this context, we present an overview of experimental achievements in laser plasma acceleration from the perspective of the production of GeV-level electron beams, and deduce the scaling formulas capable of predicting experimental results self-consistently, taking into account the propagation of a relativistic laser pulse through plasma and the accelerating field reduction due to beam loading. Finally, we present design examples for 10-GeV-level laser plasma acceleration, which is expected in near-term experiments by means of petawatt-class lasers.

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0.56 GeV Laser Electron Acceleration in Ablative-Capillary-Discharge Plasma Channel

Cited by 43 publications

References 21 publications

100-GeV large scale laser plasma electron acceleration by a multi-PW laser

100-GeV large scale laser plasma electron acceleration by a multi-PW laser

Double-line terawatt OPCPA laser system for exciting beat wave oscillations

Scaling and design of high-energy laser plasma electron acceleration

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