Design of an emittance exchanger for production of special shapes of the electron beam current

作者：Shchegolkov Dmitry Yu^*; Simakov Evgenya I

来源：Physical Review Special Topics - Accelerators and Beams, 2014, 17(4): 041301.

DOI：10.1103/PhysRevSTAB.17.041301

Recently, considerable attention has been focused on electron beam current profile shaping by means of a transverse beam mask followed by an emittance exchanger (EEX). This setup can transform a transverse particle distribution into a longitudinal particle distribution. We investigate the EEX technique with application to production of a double triangular drive and a trapezoidal main bunches for high transformer ratio, high brightness dielectric wakefield accelerators. We perform numerical optimization of two realistic configurations: a double dogleg and a chicane. In this paper we report sample designs and discuss the effects of the beam line nonlinearities, beam space charge, and coherent synchrotron radiation on a current profile of the output beam.

• 出版日期2014-4-28
• 单位Los Alamos