Electron beam pumped krypton fluoride lasers for fusion energy

Sethian, J. D.; Myers, M. C.; Giuliani, J. L.; Lehmberg, R. H.; Kepple, P.; Obenschain, S. P.; Hegeler, F.; Friedman, M.; Wolford, M. F.; Smilgys, Russell V.; Swanekamp, S.B.; Weidenheimer, D.; Giorgi, D.; Welch, D. R.; Rose, D. V.; Searles, S. K.

doi:10.1109/jproc.2004.829051

Cited by 43 publications

(16 citation statements)

References 38 publications

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“…Highlights of Recent Progress: The Electra laser produces over 650 J of laser light in short repetitive bursts and uses technologies that can scale to a full size system [9]. The requirements for repetition rate and the cost of the pulsed power component of the laser (<$10 J )1 ) have been met, and overall efficiencies of about 7.4% have been projected based on experiments and modeling of the individual components.…”

Section: Krypton-fluoride ('Krf') Laser Driversmentioning

confidence: 99%

A Review of the U.S. Department of Energy's Inertial Fusion Energy Program

Linford¹,

Betti

Dahlburg

et al. 2003

Journal of Fusion Energy

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Section: Krypton-fluoride ('Krf') Laser Driversmentioning

confidence: 99%

A Review of the U.S. Department of Energy's Inertial Fusion Energy Program

Linford¹,

Betti

Dahlburg

et al. 2003

Journal of Fusion Energy

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“…The laser operates at 1047 nm (1ω) with a 2 ns pulsewidth, a 5x diffraction limited beam quality and an efficiency greater than 5%. Fusion drivers are better operated at higher frequencies to increase the rocket efficiency and reduce laser-plasma instabilities [17]. Hence, DPSSL are operated at 3ω (349 nm) with a conversion efficiency greater than 80%.…”

Section: Diode-pumped Solid State Lasersmentioning

confidence: 99%

“…Electron beam pumped KrF systems offer superior beam spatial uniformity, short wavelength and high laser efficiency (∼ 10%). As for DPSSL, an excimer-based fusion reactor is highly modular and single beamlines could provide up to 50 kJ of laser light [17]. Again, the thermal yield and the efficiencies requested for a viable commercial power plant [18] represent major technological challenges.…”

Section: Excimer Lasersmentioning

confidence: 99%

“…Hence, Eq.17 can be interpreted as the request for signal group velocity to equal the projection of idler group velocity along the signal direction. Note that it is impossible to fulfill (17) if the group velocity of the idler is smaller than that of the signal. For the case under consideration (λ p = 349 nm), this generalized matching condition can be achieved in the signal region between 400 and 700 nm.…”

Section: Opcpa Pulse Compressionmentioning

confidence: 99%

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Enabling pulse compression and proton acceleration in a modular ICF driver for nuclear and particle physics applications

Terranova

Bulanov

Collier

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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The existence of efficient ion acceleration regimes in collective laser-plasma interactions opens up the possibility to develop high-energy physics facilities in conjunction with projects for inertial confinement nuclear fusion (ICF) and neutron spallation sources. In this paper, we show that the pulse compression requests to make operative these acceleration mechanisms do not fall in contradiction with current technologies for high repetition rate ICF drivers. In particular, we discuss explicitly a solution that exploits optical parametric chirped pulse amplification and the intrinsic modularity of the lasers aimed at ICF.

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“…The Electra main amplifier has been utilized in a six beam angularly multiplexed laser system for 10 shot bursts at 5 Hz [9]. NRL's objective [10] with Electra is to develop technologies to meet the IFE requirements for repetition rate, efficiency, durability and cost. The technologies developed in Electra should be directly scalable to a power plant beam line.…”

Section: Introductionmentioning

confidence: 99%

KrF Laser Development for Fusion Energy

Wolford

Sethian

Myers

et al. 2013

Plasma and Fusion Research

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The United States Naval Research Laboratory is developing an electron beam pumped krypton fluoride laser technology for a direct drive inertial fusion energy power plant. The repetitively pulsed krypton fluoride laser technology being developed meets the fusion energy requirements for laser beam quality, wavelength, and repetition rate. The krypton fluoride laser technology is projected, based on experiments, to meet the requirements for wall plug efficiency and durability. The projected wall plug efficiency based on experiments is greater than 7 percent. The Electra laser using laser triggered gas switches has conducted continuous operation for 90,000 shots at 2.5 Hertz operation (ten hours). The Electra laser has achieved greater than 700 Joules per pulse at 1 and 2.5 Hertz repetition rate. The comparison of krypton fluoride laser performance with krypton fluoride kinetics code shows good agreement for pulse shape and laser yield. Development and operation of a durable pulse power system with solid state switches has achieved a continuous run of 11 million pulses into a resistive load at 10 Hz.

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Electron beam pumped krypton fluoride lasers for fusion energy

Cited by 43 publications

References 38 publications

A Review of the U.S. Department of Energy's Inertial Fusion Energy Program

A Review of the U.S. Department of Energy's Inertial Fusion Energy Program

Enabling pulse compression and proton acceleration in a modular ICF driver for nuclear and particle physics applications

KrF Laser Development for Fusion Energy

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