Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

The use of ultra-high intensity laser beams to achieve extreme material states in the laboratory has become almost routine with the development of the petawatt laser. Petawatt class lasers have been constructed for specific research activities, including particle acceleration, inertial confinement fusion and radiation therapy, and for secondary source generation (x-rays, electrons, protons, neutrons and ions). They are also now routinely coupled, and synchronized, to other large scale facilities including megajoule scale lasers, ion and electron accelerators, x-ray sources and z-pinches. The authors of this paper have tried to compile a comprehensive overview of the current status of petawatt class lasers worldwide. The definition of 'petawatt class' in this context is a laser that delivers >200 TW.

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“…• INFN, Frascati National Laboratories, Italy [124] ; Figure 11. The SIOM OPCPA Qiangguang 10 PW laser facility (picture courtesy of SIOM).…”

Section: Ti:sapphire Lasersmentioning

confidence: 99%

“…• The Intense Laser Irradiation Laboratory (ILIL), CNR (Consiglio Nazionale delle Ricerche) National Institute of Optics, Pisa, Italy [124] .…”

Section: Ti:sapphire Lasersmentioning

confidence: 99%

Petawatt class lasers worldwide

Danson

Hillier

Hopps

et al. 2015

High Pow Laser Sci Eng

486

318

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“…To drive narrowband TS γ-ray sources, these beams have to meet some minimal requirements, such as a combination of Accelerator Physics -Radiation Safety and Applicationsa near-GeV energy with a percent-scale energy spread, a five-dimensional (5-D) brightness above 10 16 A/m 2 [76], and preferably absent low-energy background. These requirements, in combination with the kHz-scale repetition rate dictated by the applications, are clearly conflicting even for the most ambitious laser technology [77,78]. LPA experiments, guided by the theoretical scaling (2), are presently struggling to reach this level of performance.…”

Section: à3mentioning

confidence: 99%

“…Notably, the low energy in the stacked driver (1.4 J) and the ILP (25 mJ) permits maintaining a half-kHz repetition rate while staying below kW average power, a hard yet practical task [77]. A longer ILP would help increase the photon yield by another order of magnitude, without jeopardizing the repetition rate.…”

Section: à3mentioning

confidence: 99%

“…As the energy (0.25 J) of the long ILP is still below the stack energy (1.4 J), their repetition rates may be matched. Then, using a kW-scale laser amplifier [77] permits the production of Joule scale pulses (LPA stack and ILP) at a few hundred Hz, increasing the photon yield beyond 10 9 ph/s. Apart from keeping the photon yield at a competitive level, this repetition rate permits real time optimization of the experiment [82,83], not possible with one shot per hour PW facilities [73].…”

Section: Final Notes On All-optical Control Of Quasi-monochromatic Thmentioning

confidence: 99%

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Optically Controlled Laser-Plasma Electron Acceleration for Compact γ-Ray Sources

Kalmykov¹,

Davoine²,

Ghebregziabher³

et al. 2018

Accelerator Physics - Radiation Safety and Applications

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Thomson scattering (TS) from electron beams produced in laser-plasma accelerators may generate femtosecond pulses of quasi-monochromatic, multi-MeV photons. Scaling laws suggest that reaching the necessary GeV electron energy, with a percent-scale energy spread and five-dimensional brightness over 10 16 A/m 2 , requires acceleration in centimeter-length, tenuous plasmas (n 0 $ 10 17 cm À3 ), with petawatt-class lasers. Ultrahigh per-pulse power mandates single-shot operation, frustrating applications dependent on dosage. To generate high-quality near-GeV beams at a manageable average power (thus affording kHz repetition rate), we propose acceleration in a cavity ofelectrondensity ,drivenwithanincoherent stack of sub-Joule laser pulses through a millimeter-length, dense plasma (n 0 $ 10 19 cm À3). Blue-shifting one stack component by a considerable fraction of the carrier frequency compensates for the frequency red shift imparted by the wake. This avoids catastrophic self-compression of the optical driver and suppresses expansion of the accelerating cavity, avoiding accumulation of a massive low-energy background. In addition, the energy gain doubles compared to the predictions of scaling laws. Head-on collision of the resulting ultrabright beams with another optical pulse produces, via TS, gigawatt γ-ray pulses having a sub-20% bandwidth, over 10 6 photons in a microsteradian observation cone, and the observation cone, and the mean energy tunable up to 16 MeV.

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Femtosecond petawatt laser

Jeong

Lee

2014

Annalen der Physik

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The high-power femtosecond laser has now become an excellent scientific tool for the study of not only relativistic laser-matter interactions but also scientific applications. The high-power femtosecond laser depends on the Kerr-lens modelocking (KLM) and chirped-pulse amplification (CPA) technique. An all-Ti:sapphire-based 30-fs PW CPA laser, which is called the PULSER (Petawatt Ultrashort Laser System for Extreme Science Research) has been recently constructed and is being used for accelerating the charged particles (electrons and protons) and generating ultrashort high-energy photon (X-ray and γ -ray) sources. In this review, the world-wide PW-level femtosecond laser systems are first summarized, the output performances of the PULSER-I & II are described, and the future upgrade plan of the PULSER to the multi-PW level is also discussed. Then, several experimental results on particle (electron and proton) acceleration and X-ray generation in the intensity range of mid-10 18 W/cm 2 to mid-10 20 W/cm 2 are described. Experimental demonstrations for the newly proposed phenomena and the understanding of physical mechanisms in relativistic and ultrarelativistic regimes are highly expected as increasing the laser peak intensity up to over 10 22 W/cm 2 ∼10 23 W/cm 2 .

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Laser-Plasma Acceleration with FLAME and ILIL Ultraintense Lasers

Cited by 23 publications

References 43 publications

Petawatt class lasers worldwide

Petawatt class lasers worldwide

Optically Controlled Laser-Plasma Electron Acceleration for Compact γ-Ray Sources

Femtosecond petawatt laser

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