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Two-screen single-shot electron spectrometer for laser wakefield accelerated electron beams
A A Soloviev1, M V Starodubtsev, K F Burdonov
1Institute of Applied Physics RAS, 46 Ulyanov Street, 603950 Nizhny Novgorod, Russia.
Abstract:
The laser wakefield acceleration electron beams can essentially deviate from the axis of the system, which distinguishes them greatly from beams of conventional accelerators. In case of energy measurements by means of a permanent-magnet electron spectrometer, the deviation angle can affect accuracy, especially for high energies. A two-screen single-shot electron spectrometer that correctly allows for variations of the angle of entry is considered. The spectrometer design enables enhancing accuracy of measuring narrow electron beams significantly as compared to a one-screen spectrometer with analogous magnetic field, size, and angular acceptance.
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