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TY - CONF AU - Kuo, C.-C. AU - Chen, C.H. AU - Chen, J.Y. AU - Chiu, P.C. AU - Hsu, K.T. AU - Hu, K.H. AU - Huang, C.H. AU - Liang, C.C. AU - Liao, C.Y. AU - Liu, Y.-C. AU - Liu, Z.K. AU - Tsai, H.-J. AU - Tseng, F.H. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Low Momentum Compaction Lattice Operation of the Taiwan Photon Source J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - In order to provide short bunch length for picosecond time-resolved experiments and for coherent IR/THz radiation, low momentum compaction factor (alpha) lattices have been commissioned recently at the Taiwan Photon Source (TPS). The momentum compaction can be positive or negative and its value can be reduced by more than two orders of magnitude. In this paper, we discuss variable low alpha lattice optics, its beam dynamics issues, the measured momentum compaction and bunch lengths as well as beam orbit stability issues, etc. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4325 EP - 4328 KW - lattice KW - emittance KW - storage-ring KW - operation KW - quadrupole DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPMK015 UR - http://jacow.org/ipac2018/papers/thpmk015.pdf ER -