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Design and Implementation of the Lasers Control System for Thomson Scattering Diagnostics on EAST

Published: 26 October 2020 Publication History

Abstract

In order to meet the requirements of combined control of multiple pulsed lasers in Thomson scattering (TS) diagnostics of EAST tokamak and improve the time accuracy and resolution of plasma temperature and density measurement of EAST campaign, this paper introduces and implements a control system of multiple pulsed lasers based on FPGA. The control system of multiple pulsed lasers is designed as an exciter, which can provide accurate excitation signals for each laser device independently. After receiving the external trigger signal from the master control computer of EAST campaign, The control system of multiple pulsed lasers provides the excitation signal to the lasers correspondingly, including CLK and Q signals. The control system can set frequency, delay and other parameters for six pulsed lasers separately. This paper introduces the hardware and software design of the system, and discusses the technical parameters and accuracy of the system in detail. Finally, the experimental results are presented.

References

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    AIAM2020: Proceedings of the 2nd International Conference on Artificial Intelligence and Advanced Manufacture
    October 2020
    566 pages
    ISBN:9781450375535
    DOI:10.1145/3421766
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 26 October 2020

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    Author Tags

    1. EAST tokamak
    2. Thomson scattering diagnostics
    3. a control system of multiple pulsed lasers
    4. control system

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    Overall Acceptance Rate 100 of 285 submissions, 35%

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