157 / 2026-03-31 21:29:02

An X-ray Streaked Imaging System Integrated with Endoscope

X-ray Streaked Imaging System,Endoscope

激光与粒子束聚变、磁驱动聚变 > 实验与诊断技术

X-ray streak cameras possess high spatial and temporal resolutions, making them an indispensable diagnostic tool in double-cone ignition (DCI) experiments. In DCI experiments, X-ray imaging enables precise measurement of compression velocity and implosion velocity, which are critical parameters for achieving ignition. The targeting technology is one of the core challenges faced by diagnostic devices and directly determines the efficiency of experimental data acquisition.



In this study, we present the development of a two-dimensional imaging enabled x-ray streak camera system. By attaching a scintillator plate in front of the cathode, x-ray emissions beyond the cathode slit are converted into visible light and recorded by an imaging camera. This system efficiently diagnoses the x-ray emissions within a single line of sight. The time-resolved mode provides the temporal evolution of distinct placement self-emission regions. The time-integrated mode reveals implosion asymmetry and the spatial sampling region of the streak camera, providing 2D spatial distribution information. This advancement extends the capabilities of imaging x-ray streak cameras, significantly reduces the targeting difficulty.



Experiments performed at the Shenguang-II Upgrade facility have validated the design scheme. X-ray emissions from the coronal and colliding plasma, originating from different spatial regions and time durations, were simultaneously measured by the scintillator and cathode. These results reveal fundamental compression parameters of the DCI scheme, such that the speed of the inner surface is about 70 km/s, which represents the efficient conversion of laser energy to target kinetic energy. Time-integrated images display the sampling region of the streak camera in real time, providing a reference for achieving drive symmetry.