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Beam Position Measurement (BPM) system is an indispensable diagnosis instrument that is used to monitor the beam position information. A digital BPM (DBPM) has been designed for Shanghai Synchrotron Radiation Facility (SSRF). Among the different types of data that the DBPM provides, the Close Orbit (CO) data is an important one which is applied to beam monitoring, as well as feedback to keep the beam...
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