Miniaturized low energy ion detector with low power consumption

Abstract

The invention provides a miniaturized low energy ion detector with low power consumption. The detector comprises sensors and a circuit system portion, wherein the circuit system portion is connected with output terminals of the sensors. And the detector is characterized in that: there are two sensors; and each the sensor includes 180-degree deflecting electrodes, a cylindrical electrostatic analyzer with 90 degrees to 120 degrees, and an electron multiplier. Each the deflecting electrode is used for enabling a field of view of a polar angle direction to be realized into 180 degrees; and the deflecting electrodes, the cylindrical electrostatic analyzer and the electron multiplier are successively in series connection to form a hollow U-shaped passage. Besides, the two sensors, which are arranged in an opposite direction and are sheathed with each other, are used for realizing horizontal and opposite arrangement of the two 180-degree deflecting electrodes, thereby realizing a 360-degree scanning range. In addition, the circuit system portion consists of two preamplifiers, a high voltage circuit, a DA converter, an AD converter, an interface circuit, a power supply system and an FDGA unit. Charge signals of the two electron multipliers are respectively input to the two preamplifiers for amplification and the FDGA unit carries out counting, so that ion detection is completed.

Description

technical field [0001] The invention relates to a miniaturized, low-power consumption low-energy ion detector, which can be used for the detection of low-energy ions in near-earth space and deep space detection, and in particular to a miniaturized low-power consumption low-energy ion detector detector. Background technique [0002] Low-energy ions are one of the main objects of space physics, space environment and space weather research, and are also an important part of the orbital space environment of various spacecraft, which has an important impact on the on-orbit safety and working life of spacecraft. [0003] Miniaturization and low power consumption are the development direction of low-energy ion detectors, especially for the limited resources of spacecraft used for deep space exploration, requiring small payloads and low power consumption. At present, the volume and power consumption of domestic instruments used for space low-energy ion detection are relatively larg...

AI Technical Summary

Problems solved by technology

In order to realize the high-efficiency operation of the instrument, the DA converter and AD converter connected to the microcontroller can only use parallel interface devices, but the parallel interface devices are large in size and high in power consumption, resulting in large size and power consumption of the entire circuit board.

[0007] At present, the high voltage of the electrostatic analyzer and the high voltage of the multiplier in the domestic instruments used for space low-energy ion detection require a set of high voltage generating circuits, so that the size and power consumption of the circuit will be relatively large.

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