Paper | Title | Page |
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MOPAC21 | Tomographic Reconstruction of Electron Trajectories in a Laser-Plasma Accelerator Using Betatron X-Ray Radiation | 111 |
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Funding: This work was performed under the auspices of the U.S. Department of Energy under contract DE-AC52- 07NA27344, and supported by the LLNL LDRD Program under tracking code 13-LW-076. We demonstrate that it is possible to reconstruct in three dimensions the electron trajectories inside the channel of the laser-wakefield accelerator from the angular dependence of the Betatron x-ray spectrum by using an image plate-based spectrometer with differential filtering. The experiments were performed at LLNL using the 200 TW Callisto laser system. Experimental results are benchmarked against a code that solves the equation of motion of electrons oscillating in the plasma wake and by calculating the corresponding x-ray radiation spectrum and profile. This combined single-shot, simultaneous spectral and spatial x-ray analysis allows for a 3D reconstruction of electron trajectories in the plasma with micrometer resolution. |
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TUPMA10 | LLNL X-band Test Station Status | 610 |
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Funding: This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. An X-band test station is being built at LLNL to support inverse Compton-scattering x-ray and gamma-ray source development. The major components for the X-band test station have been designed, fabricated, installed, and aligned. The XL-4 klystron has been delivered, dressed and installed in the ScandiNova modulator, and tested to full peak power. Final assembly and bakeout of RF transport, test station supports, and accelerator components is complete, and the current status of commissioning and first beam will be presented and discussed. Future upgrade paths and configuration for a variety of x-ray and gamma-ray applications will be discussed along with schedule for planned experiments. |
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