FEL2017 - Classification: Special (memorials, FEL'15 Prize)

Paper

Title

Page

John Madey: A Short History of My Friend and Colleague

1

L.R. Elias
University of Hawaii at Manoa, Honolulu, USA

I thank the organizing committee for inviting me to share with you some stories of my friend and colleague John Madey, who passed away on July 2016 in Honolulu, Hawaii.

Slides MOA01 [0.073 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2017-MOA01

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MOA02

Rodolfo Bonifacio and the Development of FELs

P. Musumeci
UCLA, Los Angeles, California, USA

In memory of Rodolfo Bonifacio

Slides MOA02 [5.747 MB]

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MOBA01

Energy Chirp and Undulator Taper in FELs

E. Schneidmiller
DESY, Hamburg, Germany

The effects of energy chirp and undulator taper in FELs and applications of these effects in different schemes are discussed. This includes an operation of FEL oscillators with reverse-tapered undulators; energy chirp effects in high-gain, short wavelength FELs like FLASH; compensation of the energy chirp by the undulator taper in high-gain FELs and the application of this effect for generation of attosecond X-ray pulses; reverse taper in high-gain FELs for circular polarization production and for an efficient, background-free harmonic generation. Some new ideas are briefly described such as strongly chirped X-ray pulses, an enhanced X-ray pulse compression, few-cycle hard X-ray pulses etc.

Slides MOBA01 [1.303 MB]

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MOBA02

Coherence Limits of X-ray FEL Radiation

5

M.V. Yurkov, E. Schneidmiller
DESY, Hamburg, Germany

The most simple and robust technique for production of short wavelength radiation is Self Amplified Spontaneous Emission (SASE) FEL. Amplification process in SASE FELs develops from the shot noise in the electron beam, and powerful radiation is produced by single pass of the electron beam through the undulator. Serving as a seed, shot noise effects impose fundamental limits on the coherence properties of the radiation (both, temporal and spatial). FEL theory reached mature status allowing elegant description of the shot noise phenomena, and in this report we present relevant overview.

Slides MOBA02 [2.606 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2017-MOBA02

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MOBB01

Harmonic Lasing & Gain Cascading: More Efficient X-Ray Free Electron Laser Oscillators

H.X. Deng
SINAP, Shanghai, People's Republic of China

In this talk, I will focus on the recent theoretical progresses on X-ray free-electron laser oscillator (XFELO). A simplified one-dimensional theoretical model for fast XFELO optimization, harmonic lasing XFELO scheme which reduces the requiered beam energy for a interested radiation wavelength, and the gain-cascading scheme which may increase the pulse energy and the peak power of XFELO will be presented.

Slides MOBB01 [3.473 MB]

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MOBB02

Temporal and Spatial Shaping of X-Ray Free-Electron Lasers

A. Marinelli
SLAC, Menlo Park, California, USA

The x-ray free-electron laser is the brightest source of x-rays, with a peak brightness ten orders of magnitude higher than conventional synchrotron radiation sources. Much like conventional lasers, XFELs are extremely flexible machines and the properties of the x-rays can be controlled by accurately manipulating the lasing medium, i.e. the electron beam. In my talk I will discuss past and present research on shaping the temporal properties of the x-rays at the Linac Coherent Light Source (LCLS). I will discuss the two-color FEL modes and their applications in user experiments. Finally I will present our results on laser-shaping of x-ray pulses and our plans for attosecond operation in the soft x-ray regime.

Slides MOBB02 [1.289 MB]

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TUT01

On the science of seeded FELs

F. Parmigiani
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

Tuesday tutorial

Slides TUT01 [14.030 MB]

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WET01

Beam-based alignment of undulators for free-electron lasers

P. Emma
SLAC, Menlo Park, California, USA

Wed tutorial

Slides WET01 [41.846 MB]

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Paper	Title	Page
MOA01	John Madey: A Short History of My Friend and Colleague	1
	L.R. Elias University of Hawaii at Manoa, Honolulu, USA
	I thank the organizing committee for inviting me to share with you some stories of my friend and colleague John Madey, who passed away on July 2016 in Honolulu, Hawaii.
	Slides MOA01 [0.073 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2017-MOA01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOA02	Rodolfo Bonifacio and the Development of FELs
	P. Musumeci UCLA, Los Angeles, California, USA
	In memory of Rodolfo Bonifacio
	Slides MOA02 [5.747 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOBA01	Energy Chirp and Undulator Taper in FELs
	E. Schneidmiller DESY, Hamburg, Germany
	The effects of energy chirp and undulator taper in FELs and applications of these effects in different schemes are discussed. This includes an operation of FEL oscillators with reverse-tapered undulators; energy chirp effects in high-gain, short wavelength FELs like FLASH; compensation of the energy chirp by the undulator taper in high-gain FELs and the application of this effect for generation of attosecond X-ray pulses; reverse taper in high-gain FELs for circular polarization production and for an efficient, background-free harmonic generation. Some new ideas are briefly described such as strongly chirped X-ray pulses, an enhanced X-ray pulse compression, few-cycle hard X-ray pulses etc.
	Slides MOBA01 [1.303 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOBA02	Coherence Limits of X-ray FEL Radiation	5
	M.V. Yurkov, E. Schneidmiller DESY, Hamburg, Germany
	The most simple and robust technique for production of short wavelength radiation is Self Amplified Spontaneous Emission (SASE) FEL. Amplification process in SASE FELs develops from the shot noise in the electron beam, and powerful radiation is produced by single pass of the electron beam through the undulator. Serving as a seed, shot noise effects impose fundamental limits on the coherence properties of the radiation (both, temporal and spatial). FEL theory reached mature status allowing elegant description of the shot noise phenomena, and in this report we present relevant overview.
	Slides MOBA02 [2.606 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-FEL2017-MOBA02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOBB01	Harmonic Lasing & Gain Cascading: More Efficient X-Ray Free Electron Laser Oscillators
	H.X. Deng SINAP, Shanghai, People's Republic of China
	In this talk, I will focus on the recent theoretical progresses on X-ray free-electron laser oscillator (XFELO). A simplified one-dimensional theoretical model for fast XFELO optimization, harmonic lasing XFELO scheme which reduces the requiered beam energy for a interested radiation wavelength, and the gain-cascading scheme which may increase the pulse energy and the peak power of XFELO will be presented.
	Slides MOBB01 [3.473 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOBB02	Temporal and Spatial Shaping of X-Ray Free-Electron Lasers
	A. Marinelli SLAC, Menlo Park, California, USA
	The x-ray free-electron laser is the brightest source of x-rays, with a peak brightness ten orders of magnitude higher than conventional synchrotron radiation sources. Much like conventional lasers, XFELs are extremely flexible machines and the properties of the x-rays can be controlled by accurately manipulating the lasing medium, i.e. the electron beam. In my talk I will discuss past and present research on shaping the temporal properties of the x-rays at the Linac Coherent Light Source (LCLS). I will discuss the two-color FEL modes and their applications in user experiments. Finally I will present our results on laser-shaping of x-ray pulses and our plans for attosecond operation in the soft x-ray regime.
	Slides MOBB02 [1.289 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUT01	On the science of seeded FELs
	F. Parmigiani Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	Tuesday tutorial
	Slides TUT01 [14.030 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WET01	Beam-based alignment of undulators for free-electron lasers
	P. Emma SLAC, Menlo Park, California, USA
	Wed tutorial
	Slides WET01 [41.846 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)