Demonstration of repetitive energetic proton generation by ultra-intense laser interaction with a tape target

Dover, N. P.; Nishiuchi, Mamiko; Sakaki, H.; Lowe, Hazel; Alkhimova, M. A.; Ditter, E. J.; Ettlinger, Oliver C.; Faenov, A. Ya.; Hata, Masayuki; Hicks, George; Iwata, N.; Kiriyama, Hiromitsu; Koga, James; Miyahara, Tetsuhiro; Najmudin, Z.; Pikuz, T. A.; Pirozhkov, Alexander S.; Sagisaka, A.; Schramm, U.; Sentoku, Y.; Watanabe, Yukinobu; Ziegler, Tim; Zeil, Karl; Kando, M.; Kondo, K.

doi:10.1016/j.hedp.2020.100847

Cited by 20 publications

(18 citation statements)

References 55 publications

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“…Modern lasers are capable of delivering a Joule of energy in pulses that are tens of femtoseconds in length at repetition rates of > ∼ 10 Hz. Laserdriven ion sources create beams that are highly divergent, have a large energy spread, and an intensity that can vary by up to 25% pulse-to-pulse [56]. These issues are addressed in the LhARA conceptual design through the use of Gabor lenses to provide strong focusing and to allow energy selection.…”

Section: Laser-hybrid Beams For Radiobiology and Clinical Applicationmentioning

confidence: 99%

“…This field in turn accelerates protons and ions present as contaminants on the surface. The sheath-acceleration scheme has been shown to produce ion energies >40 MeV/u at the highest laser intensities [56]. The maximum proton energy (E p ) scales with laser intensity (I) as, E p ∝ I The distribution of proton and ion energies observed in laserdriven beams exhibits a sharp cut-off at the maximum energy and, historically, the flux of laser-accelerated ion beams has varied significantly shot-to-shot.…”

Section: Laser-driven Proton and Ion Sourcementioning

confidence: 99%

“…A number of schemes have been proposed for such studies, including high-pressure gases [63][64][65], cryogenic hydrogen ribbons [66][67][68], liquid sheets [69], and tape drives [70]. For LhARA, a tape drive based on the system developed at Imperial College London is proposed [56]. This system is capable of reliable operation at target thicknesses down to 5 µm, using aluminium or steel foils, and down to 18 µm using plastic tapes.…”

Section: Targetmentioning

confidence: 99%

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LhARA: The Laser-hybrid Accelerator for Radiobiological Applications

et al. 2020

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Section: Laser-hybrid Beams For Radiobiology and Clinical Applicationmentioning

confidence: 99%

Section: Laser-driven Proton and Ion Sourcementioning

confidence: 99%

Section: Targetmentioning

confidence: 99%

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LhARA: The Laser-hybrid Accelerator for Radiobiological Applications

et al. 2020

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“…Proton [48] and electron acceleration using the J-KAREN-P laser system is under investigation. More than 50 MeV (Mega electron Volt) protons [49,50] were obtained with a laser intensity of~10 21 W/cm 2 . At the laser intensity of 5 × 10 21 W/cm 2 , the effect of using a small focus spot on electron heating and proton acceleration were investigated [51], and highly charged high-Z ions were accelerated to over GeV (Giga electron Volt) energies.…”

Section: Applications With the J-karen-p Laser Systemmentioning

confidence: 99%

Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal

et al. 2020

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Ultra-high intensity femtosecond lasers have now become excellent scientific tools for the study of extreme material states in small-scale laboratory settings. The invention of chirped-pulse amplification (CPA) combined with titanium-doped sapphire (Ti:sapphire) crystals have enabled realization of such lasers. The pursuit of ultra-high intensity science and applications is driving worldwide development of new capabilities. A petawatt (PW = 1015 W), femtosecond (fs = 10−15 s), repetitive (0.1 Hz), high beam quality J-KAREN-P (Japan Kansai Advanced Relativistic ENgineering Petawatt) Ti:sapphire CPA laser has been recently constructed and used for accelerating charged particles (ions and electrons) and generating coherent and incoherent ultra-short-pulse, high-energy photon (X-ray) radiation. Ultra-high intensities of 1022 W/cm2 with high temporal contrast of 10−12 and a minimal number of pre-pulses on target has been demonstrated with the J-KAREN-P laser. Here, worldwide ultra-high intensity laser development is summarized, the output performance and spatiotemporal quality improvement of the J-KAREN-P laser are described, and some experimental results are briefly introduced.

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“…Possible applications include proton-and ion-beam production for research, particle-beam therapy, radio-nuclide production, and ion implantation. Recent measurements have demonstrated the laserdriven production of large ion fluxes at kinetic energies in excess of 10 MeV [17][18][19][20]. The further development of present technologies and the introduction of novel techniques [21,22] makes it conceivable that significantly higher ion energies will be produced in the future [13,23,24].…”

Section: Introductionmentioning

confidence: 99%

Anomalous Beam Transport through Gabor (Plasma) Lens Prototype

et al. 2021

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An electron plasma lens is a cost-effective, compact, strong-focusing element that can ensure efficient capture of low-energy proton and ion beams from laser-driven sources. A Gabor lens prototype was built for high electron density operation at Imperial College London. The parameters of the stable operation regime of the lens and its performance during a beam test with 1.4 MeV protons are reported here. Narrow pencil beams were imaged on a scintillator screen 67 cm downstream of the lens. The lens converted the pencil beams into rings that show position-dependent shape and intensity modulation that are dependent on the settings of the lens. Characterisation of the focusing effect suggests that the plasma column exhibited an off-axis rotation similar to the m=1 diocotron instability. The association of the instability with the cause of the rings was investigated using particle tracking simulations.

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Demonstration of repetitive energetic proton generation by ultra-intense laser interaction with a tape target

Cited by 20 publications

References 55 publications

LhARA: The Laser-hybrid Accelerator for Radiobiological Applications

LhARA: The Laser-hybrid Accelerator for Radiobiological Applications

Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal

Anomalous Beam Transport through Gabor (Plasma) Lens Prototype

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