TY - GEN
T1 - Dynamics of superradiant emission by a prebunched E-beam and its spontaneous emission self-interaction
AU - Ianconescu, R.
AU - Gover, A.
AU - Friedman, A.
AU - Emma, C.
AU - Musumeci, P.
N1 - Publisher Copyright:
© Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017. All rights reserved.
PY - 2017
Y1 - 2017
N2 - In the context of radiation emission from an electron beam, Dicke's superradiance (SR) is the enhanced "coherent" spontaneous radiation emission from a pre-bunched beam, and Stimulated-Superradiance (ST-SR) is the further enhanced emission of the bunched beam in the presence of a phase-matched radiation wave. These processes are analyzed for Undulator radiation in the framework of radiation field mode-excitation theory. In the nonlinear saturation regime the synchronism of the bunched beam and an injected radiation wave may be sustained by wiggler tapering: Tapering-Enhanced Superradiance (TES) and Tapering-Enhanced Stimulated Superradiance Amplification (TESSA). Identifying these processes is useful for understanding the enhancement of radiative emission in the tapered wiggler section of seeded FELs. The nonlinear formulation of the energy transfer dynamics between the radiation wave and the bunched beam fully conserves energy. This includes conservation of energy without radiation reaction terms in the interesting case of spontaneous self-interaction (no input radiation).
AB - In the context of radiation emission from an electron beam, Dicke's superradiance (SR) is the enhanced "coherent" spontaneous radiation emission from a pre-bunched beam, and Stimulated-Superradiance (ST-SR) is the further enhanced emission of the bunched beam in the presence of a phase-matched radiation wave. These processes are analyzed for Undulator radiation in the framework of radiation field mode-excitation theory. In the nonlinear saturation regime the synchronism of the bunched beam and an injected radiation wave may be sustained by wiggler tapering: Tapering-Enhanced Superradiance (TES) and Tapering-Enhanced Stimulated Superradiance Amplification (TESSA). Identifying these processes is useful for understanding the enhancement of radiative emission in the tapered wiggler section of seeded FELs. The nonlinear formulation of the energy transfer dynamics between the radiation wave and the bunched beam fully conserves energy. This includes conservation of energy without radiation reaction terms in the interesting case of spontaneous self-interaction (no input radiation).
UR - https://www.scopus.com/pages/publications/85086391767
U2 - 10.18429/JACoW-FEL2017-FRB03
DO - 10.18429/JACoW-FEL2017-FRB03
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AN - SCOPUS:85086391767
T3 - Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017
SP - 572
EP - 575
BT - Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017
A2 - Bishofberger, Kip
A2 - Bruce, Carlsten
A2 - Schaa, Volker RW
T2 - 38th International Free-Electron Laser Conference, FEL 2017
Y2 - 20 August 2017 through 25 August 2017
ER -