IPAC2022 - List of Authors (Wang, F.Y.)

Paper	Title	Page
THPOPT008	Beam Orbit Shift Due to BPM Thermal Deformation Using Machine Learning	2577
	K.M. Chen, M. Hosaka, F.Y. Wang, G. Wang, Z. Wang, W. Xu USTC/NSRL, Hefei, Anhui, People’s Republic of China L. Guo Nagoya University, Nagoya, Japan
	Stabilizing beam orbit is critical for advanced synchrotron radiation light sources. The beam orbit can be affected by many sources. To maintain a good orbit stability, global orbit feedback systems (OFB) has been widely used. However, the BPM thermal deformation would lead to BPM misreading, which can not be handled by OFB. Usually, extra diagnostics, such as position transducers, is needed to measure the deformation dependency of BPM readings. Here, an alternative approach by using the machine operation historic data, including BPM temperature, insertion device (ID) gaps and corrector currents, is presented. It is demonstrated at Hefei Light Source (HLS). The average orbit shift due to BPM thermal deformation is about 34.5 microns/degree Celsius (horizontal) and 20.0 microns/degree Celsius (vertical).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT008
About •	Received ※ 19 May 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 19 June 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Beam Orbit Shift Due to BPM Thermal Deformation Using Machine Learning

2577

K.M. Chen, M. Hosaka, F.Y. Wang, G. Wang, Z. Wang, W. Xu
USTC/NSRL, Hefei, Anhui, People’s Republic of China
L. Guo
Nagoya University, Nagoya, Japan

Stabilizing beam orbit is critical for advanced synchrotron radiation light sources. The beam orbit can be affected by many sources. To maintain a good orbit stability, global orbit feedback systems (OFB) has been widely used. However, the BPM thermal deformation would lead to BPM misreading, which can not be handled by OFB. Usually, extra diagnostics, such as position transducers, is needed to measure the deformation dependency of BPM readings. Here, an alternative approach by using the machine operation historic data, including BPM temperature, insertion device (ID) gaps and corrector currents, is presented. It is demonstrated at Hefei Light Source (HLS). The average orbit shift due to BPM thermal deformation is about 34.5 microns/degree Celsius (horizontal) and 20.0 microns/degree Celsius (vertical).

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT008

About •

Received ※ 19 May 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 19 June 2022

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)