High efficiency tapered free-electron lasers with a prebunched electron beam

被引：24

作者：

Emma, C. ^{[1
]}

Sudar, N. ^{[1
]}

Musumeci, P. ^{[1
]}

Urbanowicz, A. ^{[1
]}

Pellegrini, C. ^{[1
,2
]}

机构：

[1] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[2] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

来源：

PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2017年 / 20卷 / 11期

关键词：

EXTRACTION; POWER; FEL;

D O I：

10.1103/PhysRevAccelBeams.20.110701

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

In this paper we analyze the high gain, high efficiency tapered free-electron laser amplifier with a prebunched electron beam. Simple scaling laws are derived for the peak output power and extraction efficiency and verified using 1D simulations. These studies provide useful analytical expressions which highlight the benefits resulting from fine control of the initial conditions of the system, namely the initial electron beam bunching and input seed radiation. When time-dependent effects are included, the sideband instability is known to limit the radiation amplification due to particle detrapping. We discuss two different approaches to mitigate the sideband growth via 1-D time dependent simulations. We find that a more aggressive taper enabled by strong prebunching and a modulation of the resonance condition are both effective methods for suppressing the sideband instability growth rate.

引用

页数：9

共 32 条

[1] THE FRESH-BUNCH TECHNIQUE IN FELS [J].

BENZVI, I ;

YANG, KM ;

YU, LH .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 318 (1-3) :726-729

[2] COLLECTIVE INSTABILITIES AND HIGH-GAIN REGIME IN A FREE-ELECTRON LASER [J].

BONIFACIO, R ;

PELLEGRINI, C ;

NARDUCCI, LM .

OPTICS COMMUNICATIONS, 1984, 50 (06) :373-378

[3] PHYSICS OF THE HIGH-GAIN FEL AND SUPERRADIANCE [J].

BONIFACIO, R ;

CASAGRANDE, F ;

CERCHIONI, G ;

SOUZA, LD ;

PIERINI, P ;

PIOVELLA, N .

RIVISTA DEL NUOVO CIMENTO, 1990, 13 (09) :1-69

[4]

Brau R, 1979, FREE ELECT GENERATOR, P647

[5] Femtosecond X-ray protein nanocrystallography [J].

Chapman, Henry N. ;

Fromme, Petra ;

Barty, Anton ;

White, Thomas A. ;

Kirian, Richard A. ;

Aquila, Andrew ;

Hunter, Mark S. ;

Schulz, Joachim ;

DePonte, Daniel P. ;

Weierstall, Uwe ;

Doak, R. Bruce ;

Maia, Filipe R. N. C. ;

Martin, Andrew V. ;

Schlichting, Ilme ;

Lomb, Lukas ;

Coppola, Nicola ;

Shoeman, Robert L. ;

Epp, Sascha W. ;

Hartmann, Robert ;

Rolles, Daniel ;

Rudenko, Artem ;

Foucar, Lutz ;

Kimmel, Nils ;

Weidenspointner, Georg ;

Holl, Peter ;

Liang, Mengning ;

Barthelmess, Miriam ;

Caleman, Carl ;

Boutet, Sebastien ;

Bogan, Michael J. ;

Krzywinski, Jacek ;

Bostedt, Christoph ;

Bajt, Sasa ;

Gumprecht, Lars ;

Rudek, Benedikt ;

Erk, Benjamin ;

Schmidt, Carlo ;

Hoemke, Andre ;

Reich, Christian ;

Pietschner, Daniel ;

Strueder, Lothar ;

Hauser, Guenter ;

Gorke, Hubert ;

Ullrich, Joachim ;

Herrmann, Sven ;

Schaller, Gerhard ;

Schopper, Florian ;

Soltau, Heike ;

Kuehnel, Kai-Uwe ;

Messerschmidt, Marc .

NATURE, 2011, 470 (7332) :73-U81

[6] Tapering enhanced stimulated superradiant amplification [J].

Duris, J. ;

Murokh, A. ;

Musumeci, P. .

NEW JOURNAL OF PHYSICS, 2015, 17

[7] Experimental demonstration of fresh bunch self-seeding in an X-ray free electron laser [J].

Emma, C. ;

Lutman, A. ;

Guetg, M. W. ;

Krzywinski, J. ;

Marinelli, A. ;

Wu, J. ;

Pellegrini, C. .

APPLIED PHYSICS LETTERS, 2017, 110 (15)

[8] Compact double-bunch x-ray free electron lasers for fresh bunch self-seeding and harmonic lasing [J].

Emma, C. ;

Feng, Y. ;

Nguyen, D. C. ;

Ratti, A. ;

Pellegrini, C. .

PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2017, 20 (03)

[9] High efficiency, multiterawatt x-ray free electron lasers [J].

Emma, C. ;

Fang, K. ;

Wu, J. ;

Pellegrini, C. .

PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2016, 19 (02)

[10] Terawatt x-ray free-electron-laser optimization by transverse electron distribution shaping [J].

Emma, C. ;

Wu, J. ;

Fang, K. ;

Chen, S. ;

Serkez, S. ;

Pellegrini, C. .

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 2014, 17 (11)

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