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      Very high brightness and power LCLS-II hard X-ray pulses

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          Abstract

          We show the feasibility of generating X-ray pulses in the 4 to 8 keV fundamental photon energy range with 0.65 TW peak power, 15 fs pulse duration, \(9\times10^{-5}\) bandwidth, using the LCLS-II copper linac and hard X-ray (HXR) undulator. Third harmonic pulses with 8-12 GW peak power and narrow bandwidth are also generated. High power and small bandwidth X-rays are obtained using two electron bunches separated by about 1 ns, one to generate a high power seed signal, the other to amplify it by tapering the magnetic field of the HXR undulator. The bunch delay is compensated by delaying the seed pulse with a four crystals monochromator. The high power seed leads to higher output power and better spectral properties, with \(>\)94\% of the X-ray power being within the near transform limited bandwidth. We discuss some of the experiments made possible by X-ray pulses with these characteristics, like single particle imaging and high field physics.

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          Most cited references25

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          Positron Production in Multiphoton Light-by-Light Scattering

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            Quantum effects of the interaction of elementary particles with an intense electromagnetic field

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              Extremely high-intensity laser interactions with fundamental quantum systems

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                Author and article information

                Journal
                11 December 2018
                Article
                1812.04661
                8e7f4845-a606-45f0-976d-0cd1e8cd9559

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Custom metadata
                physics.acc-ph

                High energy & Particle physics
                High energy & Particle physics

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