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| WEPMA054 |
Photon Beam Position Monitor with Hydraulic Level System
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398 |
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- Y. J. Han, J. Choi, J. Y. Huang, S. N. Kim, Y.-C. Kim
PAL, Pohang, Kyungbuk
- I. S. Ko
POSTECH, Pohang, Kyungbuk
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In a synchrotron radiation source like the Pohang Light Source (PLS), a great effort has been made on beam stability improvements. For the beamline user-sided orbit feedback, Photon Beam Position Monitor(PBPM) provides more practical informations on the position and angle of the electron beam at the center of the bending magnet, compared the closed orbit data. For improvement of the orbit stability, PBPMs are used in PLS. However, as the ground of PLS moves about 2mm every year, we also monitor the level difference between the storage ring and the beamline floor with Hydraulic Level System (HLS). The design and experimental results of PBPM with HLS will be presented.
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