Preliminary design of a laser accelerator beam line

Shang, Yingxin; Cao, Chang-qi; Zhu, Jinying; Lu, Yuanrong; Guo, Zhiyu; Chen, Jiaer; Yan, Xueqing

doi:10.1088/1674-1137/38/11/117011

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…A narrow energy spread is necessary in many applications. Many kinds of devices have been tried and tested to cope with wide energy spectra, such as permanent magnet quadrupole lenses [11,12], solenoid magnets [13][14][15], laser triggered micro-lenses [16], bending magnets [17], a set of dipole magnets [18][19][20][21][22] or a combination of magnets [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Distribution uniformity of laser-accelerated proton beams

Zhu¹,

Tao²,

Xu³

et al. 2017

Chinese Phys. C

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Compared with conventional accelerators, laser plasma accelerators can generate high energy ions at a greatly reduced scale, due to their TV/m acceleration gradient. A compact laser plasma accelerator (CLAPA) has been built at the Institute of Heavy Ion Physics at Peking University. It will be used for applied research like biological irradiation, astrophysics simulations, etc. A beamline system with multiple quadrupoles and an analyzing magnet for laser-accelerated ions is proposed here. Since laser-accelerated ion beams have broad energy spectra and large angular divergence, the parameters (beam waist position in the Y direction, beam line layout, drift distance, magnet angles etc.) of the beamline system are carefully designed and optimised to obtain a radially symmetric proton distribution at the irradiation platform. Requirements of energy selection and differences in focusing or defocusing in application systems greatly influence the evolution of proton distributions. With optimal parameters, radially symmetric proton distributions can be achieved and protons with different energy spread within ±5% have similar transverse areas at the experiment target.

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Section: Introductionmentioning

confidence: 99%

Distribution uniformity of laser-accelerated proton beams

Zhu¹,

Tao²,

Xu³

et al. 2017

Chinese Phys. C

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Wakefield acceleration

Tajima

Yan

Ebisuzaki

2020

Rev. Mod. Plasma Phys.

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The fundamental idea of Laser Wakefield Acceleration (LWFA) is reviewed. An ultrafast intense laser pulse drives coherent wakefields of relativistic amplitude with the high phase velocity robustly supported by the plasma. The structures of wakes and sheaths in plasma are contrasted. While the large amplitude of wakefields involves collective resonant oscillations of the eigenmode of the entire plasma electrons, the wake phase velocity ~ c and ultrafastness of the laser pulse introduce the wake stability and rigidity. When the phase velocity gets smaller, wakefields turn into sheaths. When we deploy laser ion acceleration or high density LWFA in which the phase velocity of plasma excitation is low, we encounter the sheath dynamics. A large number of worldwide experiments show a rapid progress of this concept realization toward both the high energy accelerator prospect and broad applications. The strong interest in this has driven novel laser technologies, including the Chirped Pulse Amplification, the Thin Film Compression (TFC), the Coherent Amplification Network, and the Relativistic Compression (RC). These in turn have created a conglomerate of novel science and technology with LWFA to form a new genre of high field science with many parameters of merit in this field increasing exponentially lately. Applications such as ion acceleration, X-ray free electron laser, electron and ion cancer therapy are discussed. A new avenue of LWFA using nanomaterials is also emerging, adopting X-ray laser using the above TFC and RC. Meanwhile, we find evidence that the Mother Nature spontaneously created wakefields that accelerate electrons and ions to very high energies.

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