Diagnosis of the periodic vibration using laser interferometry

Qiang Wang; Yuanbo Li; Xiaoqian Cui; Hongbin Ding

doi:10.1117/12.2647970

23 January 2023 Diagnosis of the periodic vibration using laser interferometry

Qiang Wang, Yuanbo Li, Xiaoqian Cui, Hongbin Ding

Proceedings Volume 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology; 125570N (2023) https://doi.org/10.1117/12.2647970
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

Temporal phase-shifting interferometry (TPSI) has been proposed for morphology monitoring of Plasma-Facing materials (PFMs) in Tokamak due to its high precision and far-field online capability. However, this monitoring method is sensitive to vibrational environment and the mechanical vibration in Tokamak, such as the Experimental Advanced Superconducting Tokamak (EAST), would lead to a decrease in the accuracy of the measurement or even wrong results. Real-time detection of the vibration parameters of the Tokamak during the plasma operation to compensate for the error of the TPSI measurement is a solution to improve the accuracy. In this paper, a laser interferometry platform for diagnosing and measuring vibration amplitude and frequency adopting the fringe-counting (FC) method has been introduced. We measured the different vibration amplitudes and frequencies using the proposed approach. The results show that the method has a potential application for in-situ measurement of surface morphology of PFMs in Tokamak like EAST.

Citation Download Citation

Qiang Wang, Yuanbo Li, Xiaoqian Cui, and Hongbin Ding "Diagnosis of the periodic vibration using laser interferometry", Proc. SPIE 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology, 125570N (23 January 2023); https://doi.org/10.1117/12.2647970

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available