Apr 19 – 20, 2018
Diamond Light Source
Europe/London timezone

Turn-by-Turn Measurements for Systematic Investigations of the Micro-Bunching Instability

Apr 19, 2018, 5:00 PM
G59 (Diamond Light Source)


Diamond Light Source

Diamond House, Harwell Campus, Didcot, OX11 0DE, United Kingdom


Edmund Blomley (Karlsruhe Institute of Technology (KIT))


While recent diffraction limited storage rings provide bunches with transverse dimensions smaller than the wavelength of the observed synchrotron radiation, this is still challenging in the longitudinal plane. The self interaction of a short electron bunch with its emitted coherent radiation can lead to the micro-bunching instability. Therefore, the bunch compression in storage rings is currently limited to the picosecond range. At KIT, recent detector development enabled the systematic investigation of such an instability on the turn-by-turn level, leading to a better understanding thereof. With this approach, monitoring bunch lengths in the picosecond length and below over long periods of time is possible. Examples of diagnostics developments are the ultra-wideband readout electronics for ultra-fast detectors, KAPTURE, and a ultra-fast line-camera with continuous frame rate in the MHz range, KALYPSO. As a test facility, the Karlsruhe Research Accelerator (KARA) provides an excellent environment for the development and benchmarking of such new diagnostics and transnational access to KARA is supported in the framework of ARIES. Presently, also experiments to characterize the CLIC damping wiggler and to test a novel beam vacuum system within the EuroCirCol project for the future circular collider (FCC) are under way at KARA.

Primary author

Edmund Blomley (Karlsruhe Institute of Technology (KIT))


Akira Mochihashi (Karlsruhe Institute of Technology (KIT)) Mr Johannes Steinmann (Karlsruhe Institute of Technology (KIT)) Marcel Schuh (Karlsruhe Institute of Technology (KIT)) Prof. Anke-Susanne Mueller (Karlsruhe Institute of Technology (KIT))

Presentation materials