Terahertz microwave interference array for measuring two-dimensional electron density profile based on time delay method

A two-dimensional electronic and microwave interference technology, applied in the field of terahertz microwave interference arrays, can solve problems such as different local electron density, and achieve the effects of low development cost and simple structure

Pending Publication Date: 2021-06-18
DALIAN UNIV OF TECH
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Problems solved by technology

However, in large-scale devices, different physical events may occur in different spaces, resulting in different

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  • Terahertz microwave interference array for measuring two-dimensional electron density profile based on time delay method
  • Terahertz microwave interference array for measuring two-dimensional electron density profile based on time delay method
  • Terahertz microwave interference array for measuring two-dimensional electron density profile based on time delay method

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Embodiment Construction

[0015] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and technical solutions.

[0016] A terahertz microwave interference array for measuring two-dimensional electron density profiles based on the time delay method of the present invention consists of figure 1 and figure 2 As shown, it includes a crystal oscillator 1, a hexagonal device 2, a point frequency source 3, a terahertz frequency multiplier 4, an integrated unit 5, a microwave waveguide 6, a terahertz phased array antenna 7 and a central processing unit 8, wherein the integrated unit 5 includes a first dimmer 51 and a second dimmer 54, a first programmable microwave switch 52i and a second programmable microwave switch 52ii, a terahertz mixer 53, an amplifier 55, a wave detector 56 and a collector 57. Wherein the six output ports of the six-centimeter 2 are respectively marked as a, b, c, d, e, f; the two output ports of the first two-ce...

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Abstract

The invention belongs to the field of magnetic confinement controlled nuclear fusion plasma diagnosis, and relates to a terahertz microwave interference array for measuring a two-dimensional electron density profile based on a time delay method, which is an important technical method for measuring the electron density of magnetic confinement plasma. An adopted device mainly comprises a crystal oscillator, a six-centimeter device, a dot frequency source, a terahertz frequency multiplier, an integrated unit composed of a two-centimeter device, a programmable microwave switch, a frequency mixer, an amplifier, a detector and a central processing unit, a microwave waveguide, a terahertz phased array antenna and the central processing unit. According to the array disclosed by the invention, time-sharing measurement of a plurality of spatial positions can be realized by arranging a plurality of terahertz phased array antennas capable of flexibly adjusting emission angles and a programmable microwave switch in a magnetic confinement fusion device, and then a two-dimensional measurement electron density profile is obtained by utilizing a fast numerical inversion algorithm; and the time delay method is especially suitable for large-scale magnetic confinement fusion devices in the future.

Description

technical field [0001] The invention belongs to the field of magnetic confinement controlled nuclear fusion plasma diagnosis, and relates to a terahertz microwave interference array for measuring two-dimensional electron density profiles based on a time delay method, which is an important technology for measuring plasma electron density in future large magnetic confinement fusion devices . Background technique [0002] Magnetic confinement fusion is widely regarded as one of the most promising and feasible ways to fundamentally solve energy problems. Scientific research shows that when the plasma temperature T, electron density n e and can reduce the constraint time τ E Only when the triple integral of α satisfies the threshold condition (different types of plasma reactions have different thresholds) can the fusion reaction output energy and be stable and self-sustaining. Therefore, the electron density n e It is one of the three basic parameters that fusion engineering ...

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Application Information

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IPC IPC(8): G21B1/23
CPCG21B1/23Y02E30/10
Inventor 王正汹施培万朱霄龙
Owner DALIAN UNIV OF TECH
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