THE CHALLENGE OF INTERFACING THE PRIMARY BEAM LINES FOR THE AWAKE PROJECT AT CERN
THE CHALLENGE OF INTERFACING THE PRIMARY BEAM LINES FOR THE AWAKE PROJECT AT CERN
复制标题
欧洲核子研究中心 AWAKE 项目主光束线接口的挑战
DOI：
10.18429/jacow-ipac2014-tupme077
复制
发表时间：
2014
影响因子：
8.6
通讯作者：
F. Velotti
中科院分区：
文献类型：
--
作者：
C. Bracco;B. Goddard;E. Gschwendtner;M. Meddahi;P. Muggli;A. Petrenko;F. Velotti
欧洲核子研究中心的质子驱动等离子体尾场加速实验预测了质子、激光和电子束的同时运行。实验的第一阶段将在于证明等离子体中一个长质子束变成微束的自调制。这项实验的成功需要质子和激光束在整个浆细胞长度上几乎完全同心。描述了将激光集成到质子束流线中，并满足质子束指向等离子体细胞的严格要求的复杂性。实验的第二阶段还预计将注入电子束，以探测由质子束驱动的加速尾流场。进行了研究以评估平行于束轴并与束轴偏移的电子束注入的可能性。这一选择意味着质子和电子将不得不共用一条公共束线的最后几米。提出了针对该案例的问题和可能的解决方案。
The Proton Driven Plasma Wakefield Acceleration Experiment(AWAKE) at CERN foreseesthe simultaneousoperation of a proton, a laser and an electron beam. The first stage of the experiment will consist in proving the selfmodulation, in the plasma, of a long proton bunch into micro-bunches. The success of this experiment requires an almost perfect concentricity of the proton and laser beam, over the full length of the plasma cell. The complexity of integrating the laser into the proton beam line and fulfilling the strict requirements in terms of pointing precision of the proton beam at the plasma cell are described. The second stage of the experiment foresees also the injection of electron bunchesto probe the accelerating wakefields driven by the proton beam. Studies were performed to evaluate the possibility of injecting the electron beam parallel and with an offset to the beam axis. This option would imply that protons and electrons will have to share the last few meters of a common beam line. Issues and possible solutions for this case are presented.