All Diode-Pumped, High-repetition-rate Advanced Petawatt Laser System (HAPLS)

Sistrunk, Emily; Spinka, Thomas; Bayramian, A.; Betts, S.; Bopp, R.; Buck, S.; Charron, K.; Cupal, Josef; Deri, Robert J.; Drouin, M.; Erlandson, A.; Fulkerson, E.S.; Horner, J.; Horáček, Jakub; Jarboe, J.; Kasl, K.; Kim, D.; Koh, E.; Koubíková, L.; Lanning, R.; Maranville, W.; Marshall, Christopher D.; Mason, D.; Menapace, Joe; Miller, Phillip E.; Mazurek, Paweł; Naylon, Alexander Jack; Novák, Jakub; Peceli, Davorin; Rosso, Paul A.; Schaffers, Kathleen I.; Smith, Daniel; Stanley, J.; Steele, R.; Telford, S.; Thoma, J.; VanBlarcom, D.; Weiss, J.; Wegner, Paul J.; Rus, B.; Haefner, C.

doi:10.1364/cleo_si.2017.sth1l.2

Cited by 44 publications

(33 citation statements)

References 5 publications

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“…Current limitations of LPI repetition-rate pose significant problems for the translation of proof-of-concept laser experiments into real-world applications [29]. To address the issue, recent efforts are moving both lasers [30] and targets [31] used in ion acceleration toward repetition rates of order a Hz [32,33]. Of particular difficulty is designing a system that can simultaneously operate at a high repetition rate and a sufficiently low ambient pressure, and that quickly refreshes to the approximately the same target within sub-micron tolerances such that the laser interaction remains at peak focus.…”

Section: Introductionmentioning

confidence: 99%

MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction

et al. 2018

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We regret overlooking two important citations relevant to the current work, and wish to add these [1, 2]. We also cite [3], which reports crucial experimental parameters pertaining to [1], e.g. chamber pressure during water target experiment. To correct the oversight of missing references, the 4th paragraph of the introduction follows with modified and additional text underlined:Liquid targets have a number of attractive features for meeting these needs. Liquid targets can be rapidly delivered into the interaction region, and mitigate debris [31,[34][35][36]. This is well illustrated by the pioneering research in [1, 3], who, for the first time combined a kHz, femtosecond laser and liquid jet targets with a long-term vision of developing integrated sources of energetic radiation and particles for future applications. They reported the production of 9.25 keV x-rays from the interaction of a kHz, 50 fs pulsed laser interacting with a liquid Ga jet target. They also reported the use of CR39 film to record the production of 500 keV protons from the interaction of the kHz laser with an intensity of 3×10 16 W cm −2 focused on a 10-30μm diameter water jet, with a background chamber pressure of 0.7-3 mbar. The proton production efficiency of 10 −5 % was reported. Prior to switching to the liquid sheet target described in our current work, we attempted to obtain protons from the interaction of 15-30μm diameter water jets with a 40 fs pulsed laser focused to an intensity of 1×10 18 W cm −2 . We recorded many tracks on the CR39 film but, when a magnetic spectrometer was used, all of the tracks were shown to be due to electrons. As noted in this paper, we later discovered that the chamber background pressure required to produce a significant flux of protons was below the freeze point pressure of water.Skip to the end of the last sentence of the paragraph and add as the last sentence of the paragraph: the ability to generate a well collimated proton beam with proton energies greater than 500 keV has recently been demonstrated [2], using a high repetition rate 0.5 kHz, 3 mJ, 55 fs laser interacting with a solid target. The focus intensity was 2×10 18 W cm −2 . A proton beam was generated at the front surface of a rotating optical quality glass disk at a chamber pressure of 3×10 −3 mbar. AbstractLaser acceleration of ions to MeV energies has been achieved on a variety of Petawatt laser systems, raising the prospect of ion beam applications using compact ultra-intense laser technology. However, translation from proof-of-concept laser experiment into real-world application requires MeV-scale ion energies and an appreciable repetition rate (>Hz). We demonstrate, for the first time, proton acceleration up to 2 MeV energies at a kHz repetition rate using a milli-joule-class short-pulse laser system. In these experiments, 5 mJ of ultrashort-pulse laser energy is delivered at an intensity neaŕ -5 10 W cm 18 2 onto a thin-sheet, liquid-density target. Key to this effort is a flowing liquid ethylene glycol target formed i...

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Section: Introductionmentioning

confidence: 99%

MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction

et al. 2018

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“…Ultrashort pulses with a central wavelength of 810 nm and duration < 30 fs (FWHM) are generated by a titanium-doped sapphire oscillator and amplified in a series of titanium-doped sapphire amplifiers. The laser can operate at a repetition rate of 10 Hz thanks to its DPSSL (diode-pumped solid-state laser) pump laser and a specially designed cooling of the Ti:Sapphire crystals [5]; however, the maximum repetition rate used for experiments at TERESA was 3.3 Hz.…”

Section: Laser Parameters and Beam Transportmentioning

confidence: 99%

“…ELI will not only explore new regimes in fundamental physics, but also promote novel laser-plasma accelerators delivering particles and photon sources with unique capabilities, which shall strongly impact various industrial and societal applications, especially medicine [3]. ELI-Beamlines in the Czech Republic is one of the ELI pillars, which will deliver secondary sources (ions, electrons, x-rays) to users, thanks to the cutting edge diode-pumped laser technologies, which will provide a peak power of 1 PW (30 J/30 fs/10 Hz) and as high as 10 PW (1.5 kJ/150 fs/0.01 Hz) [4][5][6][7]. Optimization of the secondary source quality and reproducibility (spatial profile, pointing, divergence and energy stability) is a crucial issue, especially for applications in the biomedical field [6].…”

Section: Introductionmentioning

confidence: 99%

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TERESA Target Area at ELI Beamlines

Tryus

Grepl

Chagovets

et al. 2020

QuBS

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The TERESA (TEstbed for high REpetition-rate Sources of Accelerated particles) target area, recently commissioned with the L3-HAPLS laser at Extreme Light Infrastructure (ELI)-Beamlines, is presented. Its key technological sections (vacuum and control systems, laser parameters and laser beam transport up to the target) are described, along with an overview of the available plasma diagnostics and targetry, tested at relativistic laser intensities. Perspectives of the TERESA laser–plasma experimental area at ELI-Beamlines are briefly discussed.

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“…Pulsed high energy solid state lasers were recently realized, reaching uninterrupted operation at pulse energy levels of up to approximately 100 J and pulse repetition rates (PRR) of up to 10 Hz e.g., DiPOLE100 (Diode Pumped Optical Laser for Experiments) [1] built by the Rutherford Appleton Laboratory (RAL), and the High-Repetition-Rate Advanced Petawatt Laser System (HAPLS) [2] developed by the Lawrence Livermore National Laboratory (LLNL). Systems reaching the petawatt level with pulse energies in the range of tens of J have been realized [3], such as BELLA (Berkeley Lab…”

Section: Introductionmentioning

confidence: 99%

Conceptual Design of a Laser Driver for a Plasma Accelerator User Facility

et al. 2019

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The purpose of the European project EuPRAXIA is to realize a novel plasma accelerator user facility. The laser driven approach sets requirements for a very high performance level for the laser system: pulse peak power in the petawatt range, pulse repetition rate of several tens of Hz, very high beam quality and overall stability of the system parameters, along with 24/7 operation availability for experiments. Only a few years ago these performances were considered unrealistic, but recent advances in laser technologies, in particular in the chirped pulse amplification (CPA) of ultrashort pulses and in high energy, high repetition rate pump lasers have changed this scenario. This paper discusses the conceptual design and the overall architecture of a laser system operating as the driver of a plasma acceleration facility for different applications. The laser consists of a multi-stage amplification chain based CPA Ti:Sapphire, using frequency doubled, diode laser pumped Nd or Yb solid state lasers as pump sources. Specific aspects related to the cooling strategy of the main amplifiers, the operation of pulse compressors at high average power, and the beam pointing diagnostics are addressed in detail.Laser Accelerator) [4], with an average power output of tens of watts. New systems under realization aim to even higher average power levels, such as HAPLS targeting an output power of 300 W. Nonetheless, to address user-level requirements, the average power of ultrafast lasers needs to increase by one or two orders of magnitude.The purpose of the European project EuPRAXIA [5] is to provide a conceptual design for a compact, user-oriented, plasma accelerator with superior beam quality to enable free electron laser operation in the X-ray range. User requirements for an operational facility imply a significant increase of the laser driver output parameters with respect to systems currently available or under development: pulse peak power in the petawatt range, pulse repetition rate of several tens of Hz, as well as very high beam quality and overall stability of the system parameters.A description of the architecture of the laser driver was already published in previous work [6], describing the main parameters and technical solutions. This paper complements the previous one by recalling the general lines of the system architecture and addressing some specific points that are particularly critical for the system operation at high average power levels. These aspects are related to the amplifier's geometrical layout, the cooling solution to address the operation at high average power levels, and the laser beam transport-related issues.

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All Diode-Pumped, High-repetition-rate Advanced Petawatt Laser System (HAPLS)

Cited by 44 publications

References 5 publications

MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction

MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction

TERESA Target Area at ELI Beamlines

Conceptual Design of a Laser Driver for a Plasma Accelerator User Facility

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