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

TL;DR

This paper proposes an accelerator setup combining hard X-ray free electron laser and high energy electron radiography to enable real-time, in situ dynamic material studies with high photon flux and enhanced imaging capabilities.

Contribution

It introduces a novel accelerator configuration capable of simultaneously producing XFEL and eRad beams within a single operation mode, utilizing advanced techniques for improved performance.

Findings

Produced over 1E11 photons per pulse at 42 keV with 0.1% bandwidth.

Designed a 12 GeV linac with undulator and eRad beamline for dual-beam operation.

Enhanced imaging and density identification capabilities for dynamic material analysis.

Abstract

In order to study the dynamic response of the material and the physical mechanism of the fluid dynamics, an accelerator scenario which can be applied to hard X-ray free electron laser and high energy electron radiography was proposed. This accelerator is mainly composed of a 12GeV linac, an undulator branch and an eRad beamline. In order to characterize 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 with in-vacuum and tapering techniques, the undulator branch can produce more than 1E11 photons per pulse in 0.1 precent bandwidth at 42keV. Finally, the eRad amplifying beamline with 1:10 ratio was proposed as an important complementary tool for the wider view field and density identification ability.