Investigations of the concept of a multibunch dielectric wakefield accelerator

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• 作者：I.N. Onishchenko ^{onish@kipt.kharkov.ua" class="auth_mail" title="E-mail the corresponding author} ; V.A. Kiselev ; A.F. Linnik ; V.I. Pristupa ; G.V. Sotnikov
• 关键词：Wakefield excitation ; Dielectric structure ; Sequence of bunches ; Electron acceleration
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：1 September 2016
• 年：2016
• 卷：829
• 期：Complete
• 页码：199-205
• 全文大小：1601 K

文摘

Theoretical and experimental investigations of the physical principles of multibunch dielectric wakefield accelerator concept based on the wakefield excitation in the dielectric structure by a sequence of relativistic electron bunches are presented. The purpose of the concept is to enhance the wakefield intensity by means of the multibunch coherent excitation and wakefield accumulation in a resonator. The acceleration of bunches is achieved at detuning of bunch repetition frequency relative to the frequency of the excited wakefield. In such a way the sequence of bunches is divided into exciting and accelerated parts due to displacing bunches into accelerating phases of wakefield excited by a previous part of bunches of the same sequence. Besides the change of the permittivity and loss tangent of dielectrics under the irradiation by 100 MeV electron beam is studied.