Potential applications of the dielectric wakefield accelerators in the SINBAD facility at DESY

Nie, Y. C. and Assmann, R. and Dorda, U. and Marchetti, B. and Weikum, M. and Zhu, J. and Hüning, M. (2016) Potential applications of the dielectric wakefield accelerators in the SINBAD facility at DESY. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. ISSN 0168-9002 (https://doi.org/10.1016/j.nima.2016.01.038)

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Abstract

Short, high-brightness relativistic electron bunches can drive ultra-high wakefields in the dielectric wakefield accelerators (DWFAs). This effect can be used to generate high power THz coherent Cherenkov radiation, accelerate a witness bunch with gradient two or three orders of magnitude larger than that in the conventional RF linear accelerators, introduce energy modulation within the driving bunch itself, etc. The paper studies potential applications of the DWFAs in the SINBAD facility at DESY. The simulations show that the ultra-short relativistic bunches from the SINBAD injector ARES can excite accelerating wakefields with peak amplitudes as high as GV/m at THz frequencies in proper DWFA structures. In addition, it illustrates that the DWFA structure can serve as a dechirper to compensate the correlated energy spread of the bunches accelerated by the laser plasma wakefield accelerator.

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