Helical hexagonal double-sided silicon drift detector for large area and designing method thereof

Abstract

The invention belongs to the technical field of deep space exploration and discloses a helical hexagonal double-sided silicon drift detector for large area and a designing method thereof, therein thedesigning method of the helical hexagonal double-sided silicon drift detector for large area comprises the following steps: determining the electric potential of anterior and posterior surfaces of thesilicon drift detector; the calculus of variations is used to calculate the optimum drift path of a carrier when drifting in the silicon drift detector from point S1 to point S2; determining the constant drift electric field of the optimum drift path; calculating the width distribution of the helical cathode of the silicon drift detector. By analyzing the drift laws of the carrier of SDD and thegrowth of heavily doped electrodes, and processing from the novel structure, the novel process integration design and the theoretical calculation method of particle-like nature of light, the double-sided electrodes with double-sided correlation is designed, which not only maintain uniform electron drift electric field but also provide smooth drift track. Finally, an innovative designing and manufacturing method for collecting SDD with high efficiency, high energy resolution ratio for soft X-ray particles with intensity of 0.5-15 keV is established.

Description

technical field [0001] The invention belongs to the technical field of deep space detection, in particular to a large-area spiral hexagonal double-sided silicon drift detector and a design method thereof. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] X-ray pulsars are remnants of the evolution, collapse, and supernova explosion of massive stars. They have an extremely stable rotation period (stability is better than 10-19s / s), and are known as the most accurate astronomical clock in nature. , deep space exploration and interstellar flight spacecraft provide high-precision navigation information such as position, velocity, time and attitude, and pulsar-based navigation is a new type of navigation system that can never be destroyed. Compared with GPS and Beidou navigation methods, the new system pulsar navigation technology has incomparable advantages in the application of near-ground and deep space...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the present invention provides a large-area spiral hexagonal double-sided silicon drift detector and its design method, which overcomes the problems of small SDD unit area and high cost of splicing arrays in the world, and at the same time realizes the soft X-ray high energy resolution 2.0%@5.9keV beyond

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