The stimulated dielectric wake-field accelerator: A structure with novel properties
- Department of Applied Physics, Columbia University, New York City 10027 (United States)
- Omega-P, Inc., 202008 Yale Station, New Haven, Connecticut 06520-2008 (United States)
We describe a multi-bunch wake-field accelerator in an annular, cylindrical dielectric structure in which many modes can participate in the wake-field formation, and where the wake-field period equals the period of a train of drive bunches of electrons. The structure can be designed so that the TM{sub 0n} modes, all with phase velocities equal to the bunch velocity, have nearly equally-spaced eigenfrequencies, and thus interfere constructively. The composite wake-field is shown to cause highly peaked axial electric fields localized on each driving bunch in a periodic sequence of bunches. This permits stimulated emission of wake-field energy to occur at a rate that is larger than the coherent spontaneous emission from a single driving bunch having the same total charge. We present calculations for an annular alumina structure which will use 2 nC bunches of electrons obtained from a 100 MeV rf linac operating at 11.4 Ghz. Numerical examples are given, including acceleration of a test bunch to >200 MeV in a structure 75 cm long, using three drive bunches.
- OSTI ID:
- 21205367
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 472; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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