Compact undulator line for a high-brilliance soft-X-ray free-electron laser at MAX IV

The optimal parameter space for an X-ray free-electron laser (FEL) in the self-amplified spontaneous emission (SASE) operation mode is examined. This study focuses on FEL operation with a shorter undulator period and higher undulator strength made available through recent developments in in-vacuum, cryogenic and superconducting undulators. Progress on short-period undulator technologies is surveyed and FEL output characteristics versus undulator parameters are computed. The study is performed on a case of the planned soft-X-ray FEL at the MAX IV Laboratory in Sweden. An extension of the SASE mode into the harmonic lasing self-seeded mode is also analysed.

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Cryo-coherent diffractive imaging of biological samples with X-ray free-electron lasers

Acta Crystallographica Section A Foundations and Advances ◽

10.1107/s2053273316003107 ◽

2016 ◽

Vol 72 (2) ◽

pp. 177-178

Author(s):

Huaidong Jiang

Keyword(s):

Biological Samples ◽

Free Electron ◽

Free Electron Laser ◽

Free Electron Lasers ◽

Diffractive Imaging ◽

X Ray ◽

Coherent Diffractive Imaging ◽

Recent Developments

Recent developments in the imaging of biological samples using the X-ray free-electron laser at the SACLA facility are highlighted.

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PARAMETRIC OPTIMIZATION FOR AN X-RAY FREE ELECTRON LASER WITH A LASER WIGGLER

International Journal of Modern Physics A ◽

10.1142/s0217751x0703741x ◽

2007 ◽

Vol 22 (22) ◽

pp. 3776-3783 ◽

Cited By ~ 1

Author(s):

R. BONIFACIO ◽

N. PIOVELLA ◽

M. M. COLA

Keyword(s):

Spontaneous Emission ◽

Free Electron ◽

Free Electron Laser ◽

Parametric Optimization ◽

Amplified Spontaneous Emission ◽

The Self ◽

X Ray ◽

Quantum Regime ◽

Experimental Parameters

In this paper we optimize the experimental parameters to operate a Free Electron Laser with a laser wiggler in the Angstrom region. We show that the quantum regime of the Self Amplified Spontaneous Emission (Quantum SASE) may be reached with realistic parameters. The classical SASE regime is also discussed and compared with the quantum regime.

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Compression of Ultra-High Brightness Beams for a Compact X-ray Free-Electron Laser

Instruments ◽

10.3390/instruments3040053 ◽

2019 ◽

Vol 3 (4) ◽

pp. 53 ◽

Cited By ~ 1

Author(s):

River Robles ◽

James Rosenzweig

Keyword(s):

Free Electron ◽

Free Electron Laser ◽

High Field ◽

Time Budget ◽

High Brightness ◽

Design Elements ◽

X Ray ◽

Short Period ◽

Accelerating Cavities ◽

The Cost

The creation of the first X-ray free-electron laser at SLAC in 2009 introduced the scientific community to coherent photons of unprecedented high brightness. These photons were produced, however, at the cost of billion-dollar-class price tags and kilometer-scale machine footprints. This has meant that getting access to these photons is very difficult, and those who do get access do so with a strict time budget. Now, the development of critical enabling technologies, in particular high-field cryogenically cooled accelerating cavities and short-period, high-field undulator magnets, opens the door to an X-ray free-electron laser less than 30 m in length. We present here critical potential design elements for such a soft X-ray free-electron laser. To this end, simulation results are presented focusing on the problems associated with the process of bunch compression and novel ways in which those problems can be resolved.

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