Characterization of seeded FEL pulses at flash : Status, challenges and opportunities
(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.
(Less)
- author
- publishing date
- 2010-12-01
- 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}}, }