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Characterization of seeded FEL pulses at flash : Status, challenges and opportunities

Curbis, F. LU orcid ; Azima, A. ; Boedewadt, J. ; Delsim-Hashemi, H. ; Drescher, M. ; Hipp, U. ; Maltezopoulos, T. ; Miltchev, V. ; Mittenzwey, M. and Rehders, M. , et al. (2010) 32nd International Free Electron Laser Conference, FEL 2010 p.298-301
Abstract

Since 2004 the free-electron laser FLASH at DESY has been operated in the Self-Amplified Stimulated Emission mode (SASE), delivering gigawatt pulses with wavelengths between 6.5 nm and 40 nm in the femtosecond domain. In 2009 DESY installed an additional radiofrequency module for controlling the phase space of the electron bunches that gives the possibility to generate bunches with high peak currents but ten times larger pulse durations (≈200 fs). The relaxed timing requirements of the new configuration allows to externally seed FLASH with high-order harmonics of an optical laser below 40 nm generated in a gas target (sFLASH). Because in this case the amplification is triggered within the seed pulse length instead of starting from the... (More)

Since 2004 the free-electron laser FLASH at DESY has been operated in the Self-Amplified Stimulated Emission mode (SASE), delivering gigawatt pulses with wavelengths between 6.5 nm and 40 nm in the femtosecond domain. In 2009 DESY installed an additional radiofrequency module for controlling the phase space of the electron bunches that gives the possibility to generate bunches with high peak currents but ten times larger pulse durations (≈200 fs). The relaxed timing requirements of the new configuration allows to externally seed FLASH with high-order harmonics of an optical laser below 40 nm generated in a gas target (sFLASH). Because in this case the amplification is triggered within the seed pulse length instead of starting from the shot-noise (as in the SASE process), spikes in temporal/spectral pulse profiles should be absent and the temporal jitter should be eliminated. In this contribution we present the current status of the sFLASH photon diagnostics including first commissioning results.

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publishing date
type
Contribution to conference
publication status
published
pages
4 pages
conference name
32nd International Free Electron Laser Conference, FEL 2010
conference location
Malmo City, Sweden
conference dates
2010-08-23 - 2010-08-27
external identifiers
  • scopus:84884601162
language
English
LU publication?
no
id
3136808b-5f2c-4b1d-a123-7f4877b35ef4
date added to LUP
2020-01-08 09:56:00
date last changed
2023-09-09 21:07:22
@misc{3136808b-5f2c-4b1d-a123-7f4877b35ef4,
  abstract     = {{<p>Since 2004 the free-electron laser FLASH at DESY has been operated in the Self-Amplified Stimulated Emission mode (SASE), delivering gigawatt pulses with wavelengths between 6.5 nm and 40 nm in the femtosecond domain. In 2009 DESY installed an additional radiofrequency module for controlling the phase space of the electron bunches that gives the possibility to generate bunches with high peak currents but ten times larger pulse durations (≈200 fs). The relaxed timing requirements of the new configuration allows to externally seed FLASH with high-order harmonics of an optical laser below 40 nm generated in a gas target (sFLASH). Because in this case the amplification is triggered within the seed pulse length instead of starting from the shot-noise (as in the SASE process), spikes in temporal/spectral pulse profiles should be absent and the temporal jitter should be eliminated. In this contribution we present the current status of the sFLASH photon diagnostics including first commissioning results.</p>}},
  author       = {{Curbis, F. and Azima, A. and Boedewadt, J. and Delsim-Hashemi, H. and Drescher, M. and Hipp, U. and Maltezopoulos, T. and Miltchev, V. and Mittenzwey, M. and Rehders, M. and Roensch-Schulenburg, J. and Rossbach, J. and Tarkeshian, R. and Wieland, M. and Bajt, S. and Duesterer, S. and Laarmann, T. and Schlarb, H.}},
  language     = {{eng}},
  month        = {{12}},
  pages        = {{298--301}},
  title        = {{Characterization of seeded FEL pulses at flash : Status, challenges and opportunities}},
  year         = {{2010}},
}