Correlation study of a beam-position monitor and a photon-beam-position monitor in the PLS-II

Autor: Ghyung Hwa Kim, Mungyung Kim, Changbum Kim, Taekyun Ha, Ilmoon Hwang, Jung Yun Huang, Jong Chel Yoon, Byung-Joon Lee, Eun Hee Lee, Youngdo Joo, Ilyou Kim, Seunghwan Shin
Rok vydání: 2015
Předmět:
Zdroj: Journal of the Korean Physical Society. 66:167-170
ISSN: 1976-8524
0374-4884
Popis: The beam stability is one of the most important issues for the user service of the synchrotron radiation facility. After the upgrade of the Pohang Light Source (PLS-II), the electron-beam orbit is maintained within a root-mean-squred (rms) 1-μm range by using an orbit feedback system. However, that does not guarantee the radiation stability at the end of the beamline because unknown factors, such as focusing mirrors and double-crystal monocrometers, are present in the beamline. As a first step to solve this problem, photon-beam-position monitors (PBPMs) are installed in the front ends of the beamline to monitor the radiation stability. If the radiation is stable at the starting point of the beamline, we can move to the other components downstream that make the radiation unstable. In this paper, a correlation study will be presented between the beam-position monitor (BPM) and the PBPM. In addition, the effect of the orbit feedback system on the correlation will be described.
Databáze: OpenAIRE
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