Publisher’s Note: “Experimental demonstration of an electromagnetic pulse mitigation concept for a laser driven proton source” [Rev. Sci. Instrum. 89, 103301 (2018)]

Dubois, J. L.; Ra̧czka, Piotr A.; Hulin, S.; Rosiński, M.; Ryć, L.; Parys, P.; Zaraś-Szydłowska, A.; Makaruk, D.; Tchórz, P.; Badziak, J.; Wołowski, J.; Ribolzi, J.; Tikhonchuk, V. T.

doi:10.1063/1.5095530

Cited by 2 publications

(2 citation statements)

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“…By designing and controlling the interaction geometry to reduce [372] and mitigate [373] EMP generation, many general techniques [374] appropriate for ‘single-shot’ operation [375] can be delivered at high repetition rates ( 10 Hz) with suitable retuning/redesign and the replacement of the detector element or by transporting the signal to a more benign environment [376] before digitization (see Figure 41). Scintillators, phosphors and transducers capable of kHz–GHz rates can be readily coupled to gated or rep-rated high-dynamic-range detectors.…”

Section: Future Technologiesmentioning

confidence: 99%

Petawatt and exawatt class lasers worldwide

Danson

Haefner

Bromage

et al. 2019

High Pow Laser Sci Eng

785

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: Future Technologiesmentioning

confidence: 99%

Petawatt and exawatt class lasers worldwide

Danson

Haefner

Bromage

et al. 2019

High Pow Laser Sci Eng

785

406

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“…As shown in Fig. 3, plasma performance and parameters at different zones/areas are investigated and provided by a comprehensive suite of diagnostics that includes magnetic sensors [20], Langmuir probes [21], far-infrared interferometry / polarimetry [22], Thomson scattering [23], VUV/visible/IR spectroscopy, bolometry, reflectometry [24], energy analyzer [25], neutral particle analyzers, fusion product detectors, secondary electron emission detectors [26], and multiple fast imaging cameras [27]. In addition, extensive ongoing work focuses on advanced methods of measuring separatrix shape and plasma current profile that will facilitate equilibrium reconstruction and active control of FRCs.…”

Section: Plasma Diagnostic Suitementioning

confidence: 99%

Formation of hot, stable, long-lived field-reversed configuration plasmas on the C-2W device

Gota¹,

Binderbauer²,

Tajima³

et al. 2019

Nucl. Fusion

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TAE Technologies' research is devoted to producing high temperature, stable, long-lived field-reversed configuration (FRC) plasmas by neutral-beam injection (NBI) and edge biasing/control. The newly constructed C-2W experimental device (also called "Norman") is the world's largest compact-toroid (CT) device, which has several key upgrades from the preceding C-2U device such as higher input power and longer pulse duration of the NBI system as well as installation of inner divertors with upgraded electrode biasing systems. Initial C-2W experiments have successfully demonstrated a robust FRC formation as well as its translation into the confinement vessel through the newly installed inner divertor with adequate guide magnetic field. They also produced dramatically improved initial FRC parameters with higher plasma temperatures (Te up to 300 eV; total electron and ion temperature >1.5 keV) and more trapped flux (up to ~15 mWb, based on rigid-rotor model) inside the FRC immediately after the merger of collided two CTs in the confinement section. As for effective edge biasing/control on FRC stabilization, a number of edge biasing schemes have been tried via open-fieldlines, in which concentric electrodes located in both inner and outer divertors as well as end-on plasma guns are electrically biased independently. As a result of effective outer-divertor electrode biasing alone, FRC plasma diamagnetism duration has reached up to ~9 ms which is equivalent to C-2U plasma duration. Magnetic field flaring/expansion in both inner and outer divertors plays an important role in creating a thermal insulation on open-field-lines to reduce a loss rate of electrons, which leads to improvement of the edge as well as core FRC confinement properties.

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Publisher’s Note: “Experimental demonstration of an electromagnetic pulse mitigation concept for a laser driven proton source” [Rev. Sci. Instrum. 89, 103301 (2018)]

Cited by 2 publications

References 0 publications

Petawatt and exawatt class lasers worldwide

Petawatt and exawatt class lasers worldwide

Formation of hot, stable, long-lived field-reversed configuration plasmas on the C-2W device

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