Study of the statistical properties of the radiation from a VUV SASE FEL operating in the femtosecond regime

Ayvazyan, V.; Carneiro, J.-P.; Castro, P.; Faatz, B.; Fateev, Alexander; Feldhaus, J.; Gerth, Ch.; Gretchko, V.; Grigoryan, Bagrat; Hahn, Ulrich; Honkavaara, K.; Hüning, M.; Ischebeck, R.; Jastrow, U.; Kammering, R.; Menzel, J.; Minty, M.; Nölle, D.; Pflüger, J.; Piot, P.; Pluciński, Ł.; Rehlich, K.; Roßbach, J.; Saldin, E.L.; Schlarb, H.; Schneidmiller, E.A.; Schreiber, S.; Sobierajski, R.; Steeg, B.; Stulle, F.; Sytchev, K. P.; Tiedtke, K.; Treusch, R.; Weise, H.; Wendt, M.; Yurkov, M.V.

doi:10.1016/s0168-9002(03)00946-x

Cited by 31 publications

(9 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recent studies have shown that in this case an effect of strong suppression of the fluctuations of the radiation energy after narrow band monochromator is expected [11]. Later on this effect has been measured experimentally at the VUV FEL, phase I [17]. Our simulations show that suppression of the fluctuations is expected for the VUV FEL as well (see Fig.…”

Section: Spectral Properties Of the Radiationsupporting

confidence: 69%

Statistical properties of the radiation from VUV FEL at DESY operating at 30nm wavelength in the femtosecond regime

Saldin¹,

Schneidmiller²,

Yurkov³

2006

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Since spring, 2005 vacuum ultraviolet free electron laser (VUV FEL) at DESY operates as user facility in the wavelength range around 30 nm. Electron beam formation system at the VUV FEL is essentially nonlinear and naturally results in a formation of a short high-current leading peak in the density distribution that produces FEL radiation. The main feature of the femtosecond mode of operation of the VUV FEL is the production of short, down to 20 fs radiation pulses with GWlevel peak power. This paper is devoted to detailed studies of the short-pulse effects in the VUV FEL at DESY operating in the femtosecond regime, and to analysis of first experimental results.

show abstract

Section: Spectral Properties Of the Radiationsupporting

confidence: 69%

Statistical properties of the radiation from VUV FEL at DESY operating at 30nm wavelength in the femtosecond regime

Saldin¹,

Schneidmiller²,

Yurkov³

2006

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

show abstract

“…Simulation results are compared with experimental data published earlier [1,2,3,21]. Despite experimental data were collected during extended period of time, for the above mentioned publications we selected only those data which corresponded to similar tuning of the accelerator.…”

Section: Simulation Of the Sase Fel Processmentioning

confidence: 99%

“…TTF FEL operates in the nonlinear regime. Left plot shows experimental data with RAFEL grating [21] and right plot shows results of simulations with code FAST spike in spectrum (see Fig. 11).…”

Section: Radiation Spectra and Fluctuationsmentioning

confidence: 99%

Start-to-end simulations of SASE FEL at the TESLA Test Facility, phase 1

Dohlus

Flöttmann

Kozlov

et al. 2004

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

Phase 1 of the vacuum ultra-violet (VUV) free-electron laser (FEL) at the TESLA Test Facility (TTF) recently concluded operation. It successfully demonstrated the saturation of a SASE FEL in the in the wavelength range of 80-120 nm. We present a posteriori start-toend numerical simulations of this FEL. These simulations are based on the programs Astra and elegant for the generation and transport of the electron distribution. An independent simulation of the intricate beam dynamics in the magnetic bunch compressor is performed with the program CSRtrack. The SASE FEL process is simulated with the code FAST. From our detailed simulations and the resulting phase space distribution at the undulator entrance, we found that the FEL was driven only by a small fraction (slice) of the electron bunch. This "lasing slice" is located in the head of the bunch, and has a peak current of approximately 3 kA. A strong energy chirp (due to the space charge field after compression) within this slice had a significant influence on the FEL operation. Our study shows that the radiation pulse duration is about 40 fs (FWHM) with a corresponding peak power of 1.5 GW. The simulated FEL properties are compared with various experimental data and found to be in excellent agreement.

show abstract

“…[34,35]). They have subsequently been verified experimentally at the TESLA test facility (TTF) at DESY for VUV wavelengths around 100 nm [36,37]. Figure 5 shows the probability distribution P(E) of the radiation pulse energy E, measured at 95 nm wavelength in the linear gain regime at an active undulator .…”

Section: The Characteristics Of Sase Fel Radiationmentioning

confidence: 81%

X-ray free-electron lasers

Feldhaus

Arthur

Hastings

2005

J. Phys. B: At. Mol. Opt. Phys.

Self Cite

157

127

View full text Add to dashboard Cite

In a free-electron laser (FEL) the lasing medium is a high-energy beam of electrons flying with relativistic speed through a periodic magnetic field. The interaction between the synchrotron radiation that is produced and the electrons in the beam induces a periodic bunching of the electrons, greatly increasing the intensity of radiation produced at a particular wavelength. Depending only on a phase match between the electron energy and the magnetic period, the wavelength of the FEL radiation can be continuously tuned within a wide spectral range. The FEL concept can be adapted to produce radiation wavelengths from millimetres toÅngstroms, and can in principle produce hard x-ray beams with unprecedented peak brightness, exceeding that of the brightest synchrotron source by ten orders of magnitude or more. This paper focuses on short-wavelength FELs. It reviews the physics and characteristic properties of single-pass FELs, as well as current technical developments aiming for fully coherent x-ray radiation pulses with pulse durations in the 100 fs to 100 as range. First experimental results at wavelengths around 100 nm and examples of scientific applications planned on the new, emerging x-ray FEL facilities are presented.

show abstract

Study of the statistical properties of the radiation from a VUV SASE FEL operating in the femtosecond regime

Cited by 31 publications

References 13 publications

Statistical properties of the radiation from VUV FEL at DESY operating at 30nm wavelength in the femtosecond regime

Statistical properties of the radiation from VUV FEL at DESY operating at 30nm wavelength in the femtosecond regime

Start-to-end simulations of SASE FEL at the TESLA Test Facility, phase 1

X-ray free-electron lasers

Contact Info

Product

Resources

About