The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Roussel, E. AU - Adachi, M. AU - Bielawski, S. AU - Evain, C. AU - Hosaka, M. AU - Ilin, K.S. AU - Katoh, M. AU - Kimura, S.I. AU - Konomi, T. AU - Raasch, J. AU - Scheuring, A. AU - Siegel, M. AU - Szwaj, C. AU - Takashima, Y. AU - Thoma, P. AU - Yamamoto, N. AU - Zen, H. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Numerical Study of the Microbunching Instability at UVSOR-III: Influence of the Resistive and Inductive Impedances J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - At high charge, relativistic electron bunches circulating in storage rings undergo an instability, the so-called microbunching or the CSR (Coherent Synchrotron Radiation) instability. This instability is due to the interaction of the electrons with their own radiation and leads to the formation of microstructures (at millimeter scale) in the longitudinal phase space. Thanks to a new type of detector, based on superconducting thin film YBCO, it is now possible to observe directly these microstructures and follow their temporal evolution*. These experimental observations open a new way to make severe comparisons with theory. Here we present results of the modeling of the dynamics at UVSOR-III using a one dimensional Vlasov-Fokker-Planck equation. We show that to obtain a relatively good agreement between numerical simulations and experiments, we have to take into account several types of impedance such as the shielded CSR impedance but also the resistive and inductive impedances. PB - JACoW CP - Geneva, Switzerland SP - 1656 EP - 1658 KW - electron KW - impedance KW - wakefield KW - synchrotron KW - simulation DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-TUPRI042 UR - http://jacow.org/ipac2014/papers/tupri042.pdf ER -