Investigations into dual-grating THz-driven accelerators

Wei, Y. and Ischebeck, R. and Dehler, M. and Ferrari, E. and Hiller, N. and Jamison, S. and Xia, G. and Hanahoe, K. and Li, Y. and Smith, J.D.A. and Welsch, C.P. (2018) Investigations into dual-grating THz-driven accelerators. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 877. pp. 173-177. ISSN 0168-9002

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Abstract

Advanced acceleration technologies are receiving considerable interest in order to miniaturize future particle accelerators. One such technology is the dual-grating dielectric structures, which can support accelerating fields one to two orders of magnitude higher than the metal RF cavities in conventional accelerators. This opens up the possibility of enabling high accelerating gradients of up to several GV/m. This paper investigates numerically a quartz dual-grating structure which is driven by THz pulses to accelerate electrons. Geometry optimizations are carried out to achieve the trade-offs between accelerating gradient and vacuum channel gap. A realistic electron bunch available from the future Compact Linear Accelerator for Research and Applications (CLARA) is loaded into an optimized 100-period dual-grating structure for a detailed wakefield study. A THz pulse is then employed to interact with this CLARA bunch in the optimized structure. The computed beam quality is analyzed in terms of emittance, energy spread and loaded accelerating gradient. The simulations show that an accelerating gradient of 348 12 MV/m with an emittance growth of 3.0% can be obtained.

Item Type:
Journal Article
Journal or Publication Title:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
125923
Deposited By:
Deposited On:
18 Jun 2018 07:52
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Nov 2020 06:25