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Abstract:
SPEAR3 is a third-generation synchrotron light source storage ring, about 234 meters in circumference. To meet the beam stability requirement, our goal is to ultimately achieve an orbit variation (relative to the photon beam lines) of less than 10% of the beam size, which is about 1 micron in the vertical plane. Hydrostatic leveling system (HLS) measurements show that the height of the SPEAR3 tunnel floor can vary by tens of microns daily without thermal insulation improvements. We present an analysis of the HLS data that shows that adding thermal insulation to the concrete walls of the storage ring tunnel dramatically decreased diurnal tunnel floor motion.
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References
[1]
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G. Decker, 'Beam stability in synchrotron light source', Proceedings of DIPAC 2005, Lyon, France |
[2]
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N. Sunilkumar, J. Safranek, Y. Yan, G. Gassner, 'Characterization of slow orbit motion in SPEAR3', IPAC2010. |
[3]
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A. Chupyra, M. Kondaurov, A. Medvedko, S. Singatulin, and E. Shubin' SAS family of hydrostatic level and tilt sensors forslow ground motion studies and precise alignment, IWAA2004, CERN, Geneva, 4-7 October 2004 |
[4]
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D. Milbert,'solid.m', unpublished |
[5]
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M.D. Wood, PhD thesis, Stanford University, May, 1969 |
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