Title :
Improved closed orbit measurement system for PLS
Author :
Huang, J.-Y. ; Park, S.J. ; Hwang, W.H. ; Kim, D.T. ; Nam, S.H.
Author_Institution :
Pohang Accelerator Lab., South Korea
fDate :
6/23/1905 12:00:00 AM
Abstract :
With the installation of the first insertion device U7 and more and more sophisticated experiments in the Pohang Light Source (PLS), the synchrotron radiation users now demand more accurate measurement and control of the closed orbit. As the essential part of the accurate orbit measurement and feedback, all the BPM electronics and data acquisition system have been upgraded. In the new BPM system, we adopted a commercial BPM processor, which has better than 5 μm accuracy over 65 dB dynamic range of input signal. The data acquisition board is made in-house utilizing a fast ADC and an on-board microprocessor. New BPMs and various machine diagnostics on the orbit drift with the aid of new BPMs will be described in this paper
Keywords :
X-ray production; accelerator RF systems; accelerator control systems; analogue-digital conversion; data acquisition; electron accelerators; electron beams; high energy physics instrumentation computing; particle beam diagnostics; particle beam dynamics; storage rings; synchrotrons; BPM electronics; PLS; Pohang Light Source; U7; accurate control; accurate measurements; accurate orbit feedback; beam diagnostics; closed orbit measurement system; data acquisition board; data acquisition system; electron synchrotron light source; fast ADC; first insertion device; input signal; machine diagnostics; on-board microprocessor; orbit drift; storage ring; synchrotron radiation users; Data acquisition; Dynamic range; Energy resolution; Extraterrestrial measurements; Feedback; Light sources; Magnetic separation; Microprocessors; Signal processing; Storage rings;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986688
