Intense proton acceleration in ultrarelativistic interaction with nanochannels

Gizzi, L. A.; Cristoforetti, G.; Baffigi, F.; Brandi, F.; D’Arrigo, Giuseppe; Fazzi, A.; Fulgentini, Lorenzo; Giove, D.; Koester, P.; Labate, L.; Maero, G.; Palla, D.; Romé, M.; Russo, Michael F; Terzani, Davide; Tomassini, P.

doi:10.1103/physrevresearch.2.033451

Cited by 23 publications

(12 citation statements)

References 39 publications

(52 reference statements)

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“…The EuPRAXIA (Compact European Plasma Accelerator with Superior Beam Quality) collaboration is the first plasma accelerator collaboration on this scale bringing together 16 European partner laboratories and an additional 24 associated partners from the EU, Israel, China, Japan, Russia and the USA [116, 117] . EuPRAXIA is a Horizon 2020 project to build a European facility with multi-GeV electron beams based on laser/plasma acceleration.…”

Section: Geographic Overview Of Facilitiesmentioning

confidence: 99%

“…Based on this phenomenon, the first petawatt class OPCPA system was developed at the Institute of Applied Physics, Russian Academy of Sciences (RAS), Nizhny Novgorod. The laser, known as PEARL (Figure 22), delivered 0.2 PW in 2006 [116] and was upgraded to 0.56 PW in 2007 [117] using a homemade Nd:glass rod laser (300 J at fundamental wavelength) as a pump.…”

Section: Future Technologiesmentioning

confidence: 99%

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Petawatt and exawatt class lasers worldwide

Danson

Haefner

Bromage

et al. 2019

High Pow Laser Sci Eng

781

406

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In the 2015 review paper ‘Petawatt Class Lasers Worldwide’ a comprehensive overview of the current status of high-power facilities of ${>}200~\text{TW}$ was presented. This was largely based on facility specifications, with some description of their uses, for instance in fundamental ultra-high-intensity interactions, secondary source generation, and inertial confinement fusion (ICF). With the 2018 Nobel Prize in Physics being awarded to Professors Donna Strickland and Gerard Mourou for the development of the technique of chirped pulse amplification (CPA), which made these lasers possible, we celebrate by providing a comprehensive update of the current status of ultra-high-power lasers and demonstrate how the technology has developed. We are now in the era of multi-petawatt facilities coming online, with 100 PW lasers being proposed and even under construction. In addition to this there is a pull towards development of industrial and multi-disciplinary applications, which demands much higher repetition rates, delivering high-average powers with higher efficiencies and the use of alternative wavelengths: mid-IR facilities. So apart from a comprehensive update of the current global status, we want to look at what technologies are to be deployed to get to these new regimes, and some of the critical issues facing their development.

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Section: Geographic Overview Of Facilitiesmentioning

confidence: 99%

Section: Future Technologiesmentioning

confidence: 99%

Petawatt and exawatt class lasers worldwide

Danson

Haefner

Bromage

et al. 2019

High Pow Laser Sci Eng

781

406

View full text Add to dashboard Cite

show abstract

“…The experiment was carried out as part of the development of a laser driven particle acceleration programme for the development of a proton beamline 19 . Details of the full experimental set up are given in the Methods and a full characterization of the interaction conditions is given elsewhere [19][20][21] . Here we focus on a set of proton spectra obtained from irradiation of thin foil targets at a peak intensity of 2.4 × 10 20 W/cm 2 , with and without a pre-plasma forming fs pre-pulse.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Target Normal Sheath Acceleration via Improved Fast Electron Heating in a Controlled Pre-Plasma Driven by a Femtosecond Laser Pre-Pulse

Gizzi

Boella

Labate

et al. 2021

Preprint

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The interaction of ultraintense laser pulses with solids is largely affected by the plasma gradient at the vacuum-solid interface, which modifies the absorption and ultimately, controls the energy distribution function of heated electrons. A micrometer scale-length plasma has been predicted to yield a significant enhancement of the energy and weight of the fast electron population and to play a major role in laser-driven proton acceleration with thin foils. We report on recent experimental results on proton acceleration from laser interaction with foil targets at ultra-relativistic intensities. We show a three-fold increase of the proton cut-off energy when a micrometer scale-length pre-plasma is introduced by irradiation with a low energy femtosecond pre-pulse. Our realistic numerical simulations agree with the observed gain of the proton cut-off energy and confirm the role of stochastic heating of fast electrons in the enhancement of the accelerating sheath field.

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“…About 40% of the laser energy is enclosed in a focal spot of 10 μm diameter (FWHM), yielding a peak intensity of about (2.2±0.3)×10 20 W/cm 2 . The laser contrast of ampli ed spontaneous emission (ASE) pedestal is ~10 11 (10 10 ) at 30 (6) ps prior to the main pulse 39 , which could induce pre-plasmas with typical scale length of several hundreds of nanometers 40 .…”

Section: Resultsmentioning

confidence: 99%

High Efficiency Laser-Driven Proton Sources Using 3D-Printed Micro-Structure

Qin

Zhang

et al. 2021

Preprint

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We applied 3D-printed microwire-array (MWA) structure to boost the energy conversion efficiency of laser proton acceleration. The advanced nano-printing technique allows precise control on the spacing and geometrical size of 3D structures at 100-500 nm resolution. Under irradiation of high contrast laser pulse (15J, 35fs), the MWA target generates over 1.2×1012 protons (> 1MeV) with cut-off energies extending to 25MeV, corresponding to top-end of 8.7% energy conversion efficiency from femtosecond lasers. When comparing to flat foils the efficiency is enhanced by three times, while the cut-off energy is increased by 30-70% depending on their thicknesses. By precisely controlling the array period via 3D nano-printing, we found the dependence of proton energy/conversion-efficiency on the spacing of the MWA. The experimental trend is well reproduced by hydrodynamic and Particle-In-Cell simulations, which reveal for the first time the modulation of pre-plasma profile induced by laser diffraction within the fine structures. Optimal geometry for laser-proton acceleration is therefore strongly modified. Our work validates the use of 3D-printed micro-structures to produce high efficiency laser-driven particle sources and pointed out the new effect in optimizing the experimental conditions.

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Intense proton acceleration in ultrarelativistic interaction with nanochannels

Cited by 23 publications

References 39 publications

Petawatt and exawatt class lasers worldwide

Petawatt and exawatt class lasers worldwide

Enhancement of Target Normal Sheath Acceleration via Improved Fast Electron Heating in a Controlled Pre-Plasma Driven by a Femtosecond Laser Pre-Pulse

High Efficiency Laser-Driven Proton Sources Using 3D-Printed Micro-Structure

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