An accelerator scenario for a hard X-ray free electron laser combined with high energy electron radiography

• Published in: Chinese physics C Vol. 40; no. 8; pp. 166 - 173
• Main Author: 魏涛 李一丁 杨国君 庞健 李煜辉 李鹏 Joachim Pflueger 何小中 卢亚鑫 王科 龙继东 章林文 吴强
• Format: Journal Article
• Language: English
• Published: 01.08.2016
• Subjects: Accelerators; Beams (radiation); Free electron lasers; High energy electrons; Linear accelerators; Particle physics; Radiography; X-rays; 动态响应; 同步加速器; 射线照相; 流体动力学; 物理机制; 硬X射线; 自由电子激光器; 高能电子
• ISSN: 1674-1137; 0254-3052
• DOI: 10.1088/1674-1137/40/8/088101

In order to study the dynamic response of the material and the physical mechanism of fluid dynamics, an accelerator scenario which can be applied to both hard X-ray free electron laser and high energy electron radiography is proposed. This accelerator is mainly composed of a 12 GeV linac, an undulator branch and an eRad beamline. In order to characterize a sample＇s dynamic behavior in situ and real-time with XFEL and eRad simultaneously, the linac should be capable of accelerating the two kinds of beam within the same operation mode. Combining in-vacuum and tapering techniques, the undulator branch can produce more than 10zl photons per pulse in 0.1% bandwidth at 42 keV. Finally, an eRad amplifying beamline with 1：10 ratio is proposed as an important complementary tool for the wider view field and density identification ability.