| Title |
Microbunching Instability in Relativistic Electron Bunches: Direct Observations of the Microstructures Using Ultrafast YBCO Detectors |
| Authors |
- E. Roussel, S. Bielawski, C. Evain, C. Szwaj
PhLAM/CERLA, Villeneuve d'Ascq, France
- M. Adachi, M. Katoh, S.I. Kimura, T. Konomi
UVSOR, Okazaki, Japan
- M. Hofherr, K.S. Ilin, J. Raasch, A. Scheuring, M. Siegel, P. Thoma, S. Wuensch
KIT, Karlsruhe, Germany
- M. Hosaka, Y. Takashima, N. Yamamoto
Nagoya University, Nagoya, Japan
- H. Zen
Kyoto University, Kyoto, Japan
|
| Abstract |
Relativistic electron bunches circulating in accelerators are subjected to a dynamical instability leading to microstructures at millimeter to centimeter scale. Although this is a well-known fact, direct experimental observations of the structures, or the field that they emit, remained up to now an open problem. Here, we report the direct, shot-by-shot, time-resolved recording of the shapes (including envelope and carrier) of the pulses of coherent synchrotron radiation that are emitted, and that are a 'signature' of the electron bunch microstructure. The experiments are performed on the UVSOR-III storage ring, using electrical field sensitive YBa2Cu3O7−x thin-film ultrafast detectors. The observed patterns are subjected to permanent drifts, that can be explained from a reasoning in phase space, using macroparticle simulations.
|
| Footnotes & References |
http://dx.doi.org/10.1103/PhysRevLett.113.094801 |
| Paper |
download MOCLA01.PDF [1.230 MB / 5 pages] |
| Slides |
download MOCLA01_TALK.PDF [37.745 MB] |
| Conference |
IBIC2015, Melbourne, Australia |
| Series |
International Beam Instrumentation Conference (4th) |
| Proceedings |
Link to full IBIC2015 Proccedings |
| Session |
Time Resolved Diagnostics and Synchronization |
| Date |
14-Sep-15 14:00–15:30 |
| Main Classification |
Time Resolved Diagnostics and Synchronization |
| Keywords |
electron, detector, laser, radiation, storage-ring |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Mark Boland (SLSA, Clayton, Australia); David Button (ANSTO, Menai, Australia); Kathleen Riches (SLSA, Clayton, Australia); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-176-2 |
| Published |
January 2016 |
| Copyright |
|
