Abstract
In a Storage-Ring Free-Electron Laser (SRFEL) giant pulses can be produced by the interaction between the light stored in the optical cavity and an electron beam with low energy-spread (cold beam). This interplay produces the heating of the beam. After the generation of a single giant pulse the overlap between electrons and radiation is periodically prevented for a time necessary to dump the energy spread and recover the cold-beam condition. Two different methods are now implemented at Elettra for giant pulse generation. In the first, by modifying the radio-frequency of the ring, a change of the revolution time of electrons is induced. This avoids the temporal overlap between the electron beam and the optical field in the mirror cavity. The second method relies on a mechanical gating (chopper) which intercepts the light produced during previous interactions, inducing a periodic depletion of the optical cavity. The giant-pulses repetition rate is determined by the periodicity of the radio-frequency changes and the rotating velocity of the chopper, respectively. In this paper we compare the different techniques mentioned above for the case of the Elettra SRFEL.
Original language | English |
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Pages | 360-363 |
Number of pages | 4 |
Publication status | Published - 2006 Dec 1 |
Externally published | Yes |
Event | 28th International Free Electron Laser Conference, FEL 2006 - Berlin, Germany Duration: 2006 Aug 27 → 2006 Sept 1 |
Conference
Conference | 28th International Free Electron Laser Conference, FEL 2006 |
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Country/Territory | Germany |
City | Berlin |
Period | 2006/08/27 → 2006/09/01 |