A model describing stable coherent synchrotron radiation in storage rings

• Published in: Physical review letters Vol. 93; no. 9; pp. 094801.1 - 094801.4
• Main Authors: SANNIBALE, F, BYRD, J. M, WARNOCK, R, LOFTSDOTTIR, A, VENTURINI, M, ABO-BAKR, M, FEIKES, J, HOLLDACK, K, KUSKE, P, WÜSTEFELD, G, HÜBERS, H.-W
• Format: Journal Article
• Language: English
• Published: Ridge, NY American Physical Society 27-08-2004
• Subjects: Beam dynamics; collective effects and instabilities; Beams in particle accelerators; Cyclic accelerators and storage rings; Electromagnetism; electron and ion optics; Exact sciences and technology; Experimental methods and instrumentation for elementary-particle and nuclear physics; Fundamental areas of phenomenology (including applications); Nuclear physics; Physics; Radiation by moving charges; Storage rings; Synchrotron radiation; Electron beams; Coherent radiation; Bessy storage ring; Synchrotron radiation; Particle beam bunching
• ISSN: 0031-9007; 1079-7114
• DOI: 10.1103/PhysRevLett.93.094801

We present a model describing high power stable broadband coherent synchrotron radiation (CSR) in the terahertz frequency region in an electron storage ring. The model includes distortion of bunch shape from the synchrotron radiation (SR), which enhances higher frequency coherent emission, and limits to stable emission due to an instability excited by the SR wakefield. It gives a quantitative explanation of several features of the recent observations of CSR at the BESSY II storage ring. We also use this model to optimize the performance of a source for stable CSR emission.