Application of optimization technique to x-ray coherent diffraction imaging：Improve the Taiwan Photon Source coherent light to be more stable region

• Main Authors: Chia-Tzu Lin, 林珈慈
• Other Authors: Yung-Sung Chen
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/p6n7rw

碩士 === 國立中山大學 === 物理學系研究所 === 107 === Coherent diffraction imaging (CDI) is one of the important development and application imaging techniques in Taiwan photon source (TPS), lensless x-ray coherent diffraction imaging (CDI) use hybrid input-output algorithm retrieves the lost phase information from diffraction intensities and also reconstructed image, which is suitable for the coherent x-ray. However, taking Taiwan photon source as an example, the storage ring beam current decay as time goes on, the system will trigger injection when the storage current is lower than a specified value, the injection will stop when the storage current is higher than a specified value, top-up injection is an operation mode in which the beam current in the storage ring is maintained above certain level by frequent injection, the top-up injection provides much more unstable region in operation, in order to solve this problem, also we need to find the stable region, to improve the Taiwan photon source coherent light to be more stable, this way will provide the reconstructed image with much better accuracy.