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TY - CONF AU - Zhang, Z. AU - Chen, H.B. AU - Du, Y.-C. AU - Gai, W. AU - Huang, W.-H. AU - Shi, J. AU - Su, X.L. AU - Tang, C.-X. AU - Tian, Q.L. AU - Wang, D. AU - Wang, W. AU - Yan, L.X. AU - Zheng, L.M. AU - Zhou, Z. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Tunable High-Intensity Electron Bunch Train Production Based on Nonlinear Longitudinal Space Charge Oscillation J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - High peak current electron bunch trains with tunable terahertz (THz) spacing are produced and measured experimentally. An initial picosecond periodic modulation in the temporal profile of a relativistic electron beam is magnified by the longitudinal space charge forces. As opposed to trying to reduce its smearing effect for large beam current, we take advantages of the nonlinear space charge oscillation through controlling the plasma phase advance. The spacing of the bunch train can be varied continuously either by tuning the velocity bunching of a radio-frequency gun or by tuning the compression of a downstream magnetic chicane. The narrow-band μJ-level THz radiation from the bunch train are also measured with tunable central frequency of the spectral from ~0.5 THz to 1.6 THz. The bunch train measurements are consistent with the particle tracking simulations. PB - JACoW CP - Geneva, Switzerland SP - 1782 EP - 1784 KW - radiation KW - electron KW - experiment KW - space-charge KW - gun DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-TUPOW018 UR - http://jacow.org/ipac2016/papers/tupow018.pdf ER -