The development of W-PBPM at diagnostic beamline

• Published in: Journal of the Korean Physical Society Vol. 71; no. 11; pp. 836 - 841
• Main Authors: Kim, Seungnam, Kim, Myeongjin, Kim, Seonghan, Shin, Hocheol, Kim, Jiwha, Lee, Chaesun
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.12.2017; Springer Nature B.V; 한국물리학회
• Subjects: Change detection; Diagnostic systems; Mathematical and Computational Physics; Orbital stability; Particle and Nuclear Physics; Photon beams; Physics; Physics and Astronomy; Theoretical; 물리학; W-PBPM; Pohang Light Source; Photon beam position monitor; Beam position monitor; PBPM; BPM
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.71.836

The photon beam position monitor (PBPM) plays a critically important role in the accurate monitoring of the beam position. W (Wire)-PBPMs are installed at the front end and photon transfer line (PTL) of the diagnostic beamline and detect the change of position and angle of the beam orbit applied to the beamline. It provides beam stability and position data in real time, which can be used in feedback system with BPM in storage-ring. Also it provides beam profile, which makes it possible to figure out the specifications of beam. With two W-PBPMs, the angle information of beam could be acquired and the results coupled with beam profile are used with orbit correction. The W-PBPM has been designed and installed in the diagnostic beamline at Pohang Light Source. Herein the details of the design, analysis and performance for the W-PBPM will be reported.