Large-area spiral cylindrical double-sided silicon drift detector and design method thereof

Abstract

The invention belongs to the technical field of deep space detection and discloses a large-area spiral cylindrical double-sided silicon drift detector and a design method thereof. The design method for the large-area spiral cylindrical double-sided silicon drift detector comprises the following steps of determining electric potentials of the front surface and the rear surface of the silicon driftdetector; calculating an optimal drift path from a point S1 to a point S2 for a carrier during drifting in the silicon drift detector by adopting a mathematical variation method; determining a constant drift electric field of the optimal drift path; and calculating width distribution of a spiral negative electrode of the silicon drift detector. According to the method, through analysis on a carrier drift behavior law and heavily doped electrode growth of the SSD, starting from a new structure, a novel process integration design and a light particle theory calculation method, a double-sided electrode having a double-sided correlation effect and capable of keeping an uniform electron drift electric field and providing a smooth drift trajectory is designed, and an innovative design and manufacturing mode of the efficient collection SDD with high energy resolution of soft X-ray particles with the intensity of 0.5-15keV is established.

Description

technical field [0001] The invention belongs to the technical field of deep space detection, in particular to a large-area spiral cylindrical 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 spa...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems existing in the prior art, the present invention provides a large-area spiral cylindrical 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 realizes soft X Ray high energy resolution 2.0%@5.9keV beyond

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