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Beam position monitor (BPM) used to measure the position of the electron beam in storage ring. The instability of the BPM itself will definitely influence the beam position readout. At Hefei Light Source (HLS), the mechanical instability of the BPM was studied with raster gauges. By tracing the displacement of the BPM chamber, it was observed that the BPM chamber moved from time to time. The movement...
This paper presents a photon beam position monitor using beam profile and emittance measurement system for HLS (Hefei Light Source). Using this monitor, we calculated the horizontal and vertical center positions of the beam profile, and then we calibrated these positions with BPM system. When changed the RF frequency, the horizontal and vertical dispersions at the place of beam profile monitor could...
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