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J. Huang

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Last Name: Huang

Full Name: J. Huang

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4 papers

title: Observation of Anomalously Large Spectral Bandwidth in a High Gain Self-amplified Spontaneous Emission Free-Electron Laser

format: preprint

year: 2005

14 authors: G. Andonian | A. Murokh | J. B. Rosenzweig | R. Agustsson | M. Babzien | I. Ben-Zvi | Pedro Frigola | J. Huang | L. Palumbo | C. Pellegrini | S. Reiche | G. Travish | C. Vicario | V. Yakimenko

abstract: Observation of ultra-wide bandwidth, up to a full width of 15%, high-gain operation of a self-amplified spontaneous emission free election laser (SASE FEL) is reported. This type of lasing is obtained with a strongly chirped beam (~ 1.7%) emitted from the accelerator. Because of non-linear pulse compression during beam transport, a short, high current pulse with strong mismatch errors is injected into the undulator, bringing about high FEL gain. Start-end simulations reproduce key features of the measured results, and provide insight into mechanisms, such as angular spread in both emitted photon and electron trajectory distributions, which yield novel features in the radiation spectrum.

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title: Recent Results from and Future Plans for the VISA II SASE FEL

format: conference procceeding

conference: 2005 Particle Accelerator Conference

year: 2005

19 authors: G. Andonian | R. Agustsson | P. Frigola | A. Murokh | C. Pellegrini | S.Reiche | J. B. Rosenzweig | G. Travish | M. BABZIEN | I. Ben-Zvi | V. Litvinenko | V. Yakimenko | I. Boscolo | S. Cialdi | A. Flacco | M. Ferrario | L. Palumbo | C. Vicario | J. Huang

abstract: The VISA II (Visible to Infrared SASE Amplifier) project, a consequent experiment to the succesful VISA enterprise, entails the use of a chirped electron beam to drive a high gain SASE FEL. The resulting ultra-short pulses will be characterized using an advanced FROG (Frequency Resolved Optical Gating) technique, as well as a double differential spectrum (angle/wavelength) diagnostic. Implementation of sextupole corrections to the longitudinal aberrations affecting the high energy-spread chirped beam during transport to the VISA undulator is studied. Start-end simulations, including radiation diagnostics, are discussed. Initial experimental results involving a highly chirped beam transported without sextupole corrections, the resulting high gain lasing, and computational analysis are briefly reported.

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title: Recent Results from and Future Plans for the VISA II SASE FEL

format: preprint

year: 2005

19 authors: G. Andonian | R. Agustsson | Pedro Frigola | A. Murokh | C. Pellegrini | S.Reiche | J. B. Rosenzweig | G. Travish | M. BABZIEN | I. Ben-Zvi | V. Litvinenko | V. Yakimenko | I. Boscolo | S. Cialdi | A. Flacco | M. Ferrario | L. Palumbo | C. Vicario | J. Huang

abstract: The VISA II (Visible to Infrared SASE Amplifier) project, a consequent experiment to the succesful VISA enterprise, entails the use of a chirped electron beam to drive a high gain SASE FEL. The resulting ultra-short pulses will be characterized using an advanced FROG (Frequency Resolved Optical Gating)technique, as well as a double differential spectrum (angle/wavelength) diagnostic. Implementation of sextupole corrections to the longitudinal aberrations affecting the high energy-spread chirped beam during transport to the VISA undulator is studied. Start-end simulations, including radiation diagnostics, are discussed. Initial experimental results involving a highly chirped beam transported without sextupole corrections, the resulting high gain lasing, and computational analysis are briefly reported.

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title: Simulations, Diagnostics and Recent Results of the VISA II Experiment

format: conference procceeding

conference: Proceedings of the 27th International Free Electron Laser Conference

year: August 2005

17 authors: G. Andonian | A. Murokh | C. Pellegrini | S. Reiche | J. Rosenzweig | G. Travish | M. Babzien | I. Ben-Zvi | V. Litvinenko | V. Yakimenko | I. Boscolo | S. Cialdi | A. Flacco | M. Ferrario | L. Palumbo | C. Vicario | J. Huang

abstract: The VISA II experiment entails the use of a chirped electron beam to drive a high gain SASE FEL. Sextupoles are implemented to correct the longitudinal aberrations affecting the high energy spread chirped beam during transport to the undulator. The output radiation is diagnosed with a modified frequency resolved optical gating (FROG) technique. The double differential energy spectrum is measured with a pair of slits and a set of gratings. In this paper, we report on start-to-end simulations, radiation diagnostics, as well as initial experimental results. Technical considerations for future experimental methods are also addressed.

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title:	Observation of Anomalously Large Spectral Bandwidth in a High Gain Self-amplified Spontaneous Emission Free-Electron Laser
format:	preprint
year:	2005
14 authors:	G. Andonian \| A. Murokh \| J. B. Rosenzweig \| R. Agustsson \| M. Babzien \| I. Ben-Zvi \| Pedro Frigola \| J. Huang \| L. Palumbo \| C. Pellegrini \| S. Reiche \| G. Travish \| C. Vicario \| V. Yakimenko
abstract:	Observation of ultra-wide bandwidth, up to a full width of 15%, high-gain operation of a self-amplified spontaneous emission free election laser (SASE FEL) is reported. This type of lasing is obtained with a strongly chirped beam (~ 1.7%) emitted from the accelerator. Because of non-linear pulse compression during beam transport, a short, high current pulse with strong mismatch errors is injected into the undulator, bringing about high FEL gain. Start-end simulations reproduce key features of the measured results, and provide insight into mechanisms, such as angular spread in both emitted photon and electron trajectory distributions, which yield novel features in the radiation spectrum.
keywords:
Download \| View \| Details \| edit \| delete

title:	Recent Results from and Future Plans for the VISA II SASE FEL
format:	conference procceeding
conference:	2005 Particle Accelerator Conference
year:	2005
19 authors:	G. Andonian \| R. Agustsson \| P. Frigola \| A. Murokh \| C. Pellegrini \| S.Reiche \| J. B. Rosenzweig \| G. Travish \| M. BABZIEN \| I. Ben-Zvi \| V. Litvinenko \| V. Yakimenko \| I. Boscolo \| S. Cialdi \| A. Flacco \| M. Ferrario \| L. Palumbo \| C. Vicario \| J. Huang
abstract:	The VISA II (Visible to Infrared SASE Amplifier) project, a consequent experiment to the succesful VISA enterprise, entails the use of a chirped electron beam to drive a high gain SASE FEL. The resulting ultra-short pulses will be characterized using an advanced FROG (Frequency Resolved Optical Gating) technique, as well as a double differential spectrum (angle/wavelength) diagnostic. Implementation of sextupole corrections to the longitudinal aberrations affecting the high energy-spread chirped beam during transport to the VISA undulator is studied. Start-end simulations, including radiation diagnostics, are discussed. Initial experimental results involving a highly chirped beam transported without sextupole corrections, the resulting high gain lasing, and computational analysis are briefly reported.
keywords:
Download \| View \| Details \| edit \| delete

title:	Simulations, Diagnostics and Recent Results of the VISA II Experiment
format:	conference procceeding
conference:	Proceedings of the 27th International Free Electron Laser Conference
year:	August 2005
17 authors:	G. Andonian \| A. Murokh \| C. Pellegrini \| S. Reiche \| J. Rosenzweig \| G. Travish \| M. Babzien \| I. Ben-Zvi \| V. Litvinenko \| V. Yakimenko \| I. Boscolo \| S. Cialdi \| A. Flacco \| M. Ferrario \| L. Palumbo \| C. Vicario \| J. Huang
abstract:	The VISA II experiment entails the use of a chirped electron beam to drive a high gain SASE FEL. Sextupoles are implemented to correct the longitudinal aberrations affecting the high energy spread chirped beam during transport to the undulator. The output radiation is diagnosed with a modified frequency resolved optical gating (FROG) technique. The double differential energy spectrum is measured with a pair of slits and a set of gratings. In this paper, we report on start-to-end simulations, radiation diagnostics, as well as initial experimental results. Technical considerations for future experimental methods are also addressed.
keywords:	pbpl
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