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TY - CONF AU - Jing, C.-J. AU - Baryshev, S.V. AU - Kanareykin, A. AU - Lau, J.W. AU - Liu, A. AU - Masiel, D. AU - Reed, B. AU - Zhao, Y. AU - Zhu, Y. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Demonstration of a Tunable Electron Beam Chopper for Application in 200 kV stroboscopic TEM 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 - For the last several decades, time-resolved transmission electron microscopes (TEM) exploring the sub-microsecond timescale have relied on the photoemission technology to generate the single or train of electron bunches. However, the complexity of additional laser system and the availability of high repitition rate laser limit applications of the laser-driven approach. Lately we have made substantial progress towards pioneering a new kind of time-resolved TEM, complementary to the existing laser-based techniques. Using a tunable RF beam-chopper, we are able to retrofit an exsiting TEM providing a pulsed electron beam at a continuously tunable reptition rate up to 12GHz and a tunable bunch length. In the article we will briefly discuss the working principle and experimental progress to date. PB - JACoW Publishing CP - Geneva, Switzerland SP - 467 EP - 469 KW - electron KW - kicker KW - laser KW - experiment KW - controls DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-MOPML030 UR - http://jacow.org/ipac2018/papers/mopml030.pdf ER -