Real-time electron spectrometer based on thin film scintillator and optical fiber array

Abstract

The present invention provides a real-time electron spectrometer based on a thin film scintillator and an optical fiber array. The spectrometer comprises an electron collimating device, a uniform magnetic field device, the thin film scintillator, the optical fiber line-to-plane conversion array and an imaging system; the electron collimating device, the uniform magnetic field device and the thin film scintillator are arranged in a housing; a coaxial hole in the axial direction of the electronic collimating device is formed in the housing; and the coaxial hole is used for assisting the position adjustment of the electron spectrometer. On the basis of a magnetic field deflection-based traditional electron spectrometer, the real-time electron spectrometer integrates advantages such as the real-time detection of the scintillator, low noise and flexibility of plastic optical fibers, high matching degree between the plane fiber array and the image plane of a detector. The electron spectrometer of the present invention is of simplicity and is easy to operate. The real-time electron spectrometer of the invention can diagnose and detect electrons of which the energy ranges from 0.98MeV to 4.55MeV, can be extended to higher energy bands and has a high application value in laser plasma physics.

Description

technical field [0001] The invention relates to the technical field of electron spectrometer, in particular to a real-time electron spectrometer based on a thin film scintillator and an optical fiber array. [0002] technical background [0003] Since the chirped pulse amplification technology (Chirped Pulse Amplification, CPA) was proposed by G. 20 W / cm 2 As mentioned above, the interaction between such a super-strong ultrashort pulse laser and matter will produce a large number of relativistic energy electrons. The generation and transport of these relativistic electrons is the basis of many processes of laser plasma interaction, and it is a research field in the field of high-energy energy density physics. Basic subjects. Therefore, it is extremely important to measure the energy spectrum of this relativistic electron. [0004] Electron spectroscopy is generally measured based on the principle of electron deflection in a magnetic field. The electrons are deflected by t...

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Problems solved by technology

However, in the laser plasma physics experiment, the experimental process will excite strong electromagnetic pulses, and sCMOS or CCD is in danger of being damaged in the environment of strong electromagnetic pulses

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