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

详细信息    查看全文

• 作者：Y.C. Nie^a ; ^{yuancun.nie@desy.de" class="auth_mail" title="E-mail the corresponding author} ; R. Assmann^a ; U. Dorda^a ; B. Marchetti^a ; M. Weikum^a ; ^b ; J. Zhu^a ; M. Hü ; ning^a
• 关键词：Dielectric wakefield accelerator ; Ultra-short electron bunch ; Accelerating gradient ; Energy spread
• 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：183-186
• 全文大小：633 K

文摘

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.