High-energy quasi monoenergetic electronic beam ground calibration system of detector

Abstract

The invention relates to a high-energy quasi monoenergetic electronic beam ground calibration system of a detector. The system comprises an electronic linear accelerator, a quadrupole magnet set composed of multiple quadrupole magnets I, a pair of dipolar magnets, a pair of quadrupole magnets II and the detector to be calibrated. A thin target is arranged between the electronic linear acceleratorand the quadrupole magnet set; a slit A is arranged between the quadrupole and the pair of dipolar magnets; the pair of quadrupole magnets II and a slit B are arranged between the pair of dipolar magnets; the pair of quadruple magnets II, the pair of dipolar magnets and the slit B are sequentially and dissymetrically placed to form an energy selection deflection structure; the slit A and the energy selection deflection structure are sequentially arranged between the quadrupole magnet set and the detector to be calibrated. Electronic beams supplied by the accelerator are attenuated to quasi monoenergetic electronic beams within the acceptable flux range of the detector, the energy of the calibrated electronic beams is adjustable, the flux is controllable, the system can be used for electronic beam ground calibration of the spaceflight detector, and therefore the gap for the national detector ground electronic beam calibration high-energy region is filled.

Description

technical field [0001] The invention relates to an electron beam ground calibration system, in particular to a detector high-energy quasi-single-energy electron beam ground calibration system. Background technique [0002] With the exploration of space by human beings, space activities have become the frontier field of scientific and technological development in the world today, and are extremely fundamental, forward-looking, innovative and driving. It plays a very prominent role in the application of unique space resources to carry out space research, understand and protect the earth, explore the origin of life, and the formation and evolution of the universe. As countries around the world step up their efforts in space exploration and utilization, while China is further developing and utilizing low-earth orbit space, it has also accelerated the pace of deep space exploration, such as the first scientific exploration of the moon and Mars, which poses a long-term challenge t...

AI Technical Summary

Problems solved by technology

Disadvantages of the cosmic ray method: on the one hand, the ray source is not monoenergetic, and its own energy divergence is large; on the other hand, the cosmic ray frequency per unit area near the ground is relatively low, and it takes a long time to complete a calibration

The only disadvantage is that the beam current of the existing electron accelerator is much higher than the electron flux required for detector calibration, so it cannot be directly used for ground calibration

The cost of developing a special device is particularly high, and there is no such type of device in China

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