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TY - CONF AU - Su, X.L. AU - Du, Y.-C. AU - Huang, W.-H. AU - Liang, Y.F. AU - Niu, L. AU - Tang, C.-X. AU - Tian, Q.L. AU - Wang, D. AU - Yan, L.X. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Experimental Results on THz Superradiation From the Undulator in Tsinghua University Beamline J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - In this paper, the first operation of a widely tunable 8-period undulator at terahertz (THz) frequency in Tsinghua University beamline was reported. Superradiate undulator radiation from sub-picosecond electron bunches compressed by chicane was observed. The measured radiation curve shows clearly that the radiation energy is proportional to the charge square, and the THz frequency can be changed from 0.4 THz to 10 THz with narrow-band spectrums. Our results demonstrate a high power and tunable coherent THz source, which could be useful for many applications in the future. PB - JACoW CP - Geneva, Switzerland SP - 1488 EP - 1490 DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-TUPAB071 UR - http://jacow.org/ipac2017/papers/tupab071.pdf ER -