نتایج جستجو برای: fel haye hessi
تعداد نتایج: 2393 فیلتر نتایج به سال:
The Linac Coherent Light Source (LCLS) is a SASE 1.5-15 Å x-ray Free-Electron Laser (FEL) facility under construction at SLAC [1], and presently in an advanced phase of commissioning. The injector, linac, and new bunch compressors were commissioned in 2007 [2] and 2008 [3], establishing the necessary electron beam brightness at 14 GeV. The final phase of commissioning, including the FEL undulat...
A detailed design of a free electron laser (FEL) amplifier operating in the extreme ultra violet (XUV) and seeded directly by a high harmonic source is presented. The design is part of the 4th generation light source (4GLS) facility proposed for the Daresbury Laboratory in the UK which will offer users a suite of high brightness synchronised sources from THz frequencies into the XUV. The XUV-FE...
DNA hairpin molecules with periodic base sequences can be expected to exhibit a regular coarse-grained free energy landscape (FEL) as a function of the number of open base pairs and applied mechanical force. Using a commonly employed model, we first analyze for which types of sequences a particularly simple landscape structure is predicted, where forward and backward energy barriers between par...
In this paper we present a development of a multipurpose vacuum chamber which primal function is to be used in pump/probe experiments with free electron laser (FEL) radiation. The chamber is constructed for serial diffraction and serial spectroscopy allowing a fast exchange of samples during the measurement process. For the fast exchange of samples, liquid jet systems are used. Both application...
A new proline-based aminophenol ligand was synthesized by a convenient procedure. The ligand was characterized by (1)H NMR, (13)C NMR and IR spectroscopies, elemental analysis and optical activity measurements. Mononuclear iron(III) complex (FeL(Pro)) of this ligand was synthesized and characterized by IR, UV-vis, ESI-MS, magnetic susceptibility studies and cyclic voltammetry techniques. The eq...
Impurity-induced turbulence suppression and reduced transport in the DIII-D tokamak* G. R. McKee, M. Murakami, J. A. Boedo, N. H. Brooks, K. H. Burrell, D. R. Ernst, R. J. Fonck, G. L. Jackson, M. Jakubowski, R. J. La Haye, A. M. Messiaen, J. Ongena, C. L. Rettig, B. W. Rice, C. Rost, G. M. Staebler, R. D. Sydora, D. M. Thomas, B. Unterberg, M. R. Wade, and W. P. West General Atomics, P.O. Box ...
M. Murakami, M.R. Wade, J.C. DeBoo, C.M. Greenfield, T.C. Luce, M.A. Makowski, C.C. Petty, G.M. Staebler, T.S. Taylor, M.E. Austin, D.R. Baker, R.V. Budny, K.H. Burrell, T.A. Casper, M. Choi, J.R. Ferron, A.M. Garofalo, I.A. Gorelov, R.J. Groebner, R. La Haye, A.W. Hyatt, R.J. Jayakumar, K. Kajiwara, J.E. Kinsey, L.L. Lao, J. Lohr, D. McCune, R.I. Pinsker, P.A. Politzer, R. Prater, ( b ) H.E. S...
Storage ring FELs have operated successfully in the low-gain regime using optical cavities. Discussions of a high-gain FEL in a storage ring typically involve a special bypass to decouple the FEL interaction from the storage ring dynamics. In this paper, we investigate the coupled dynamics of a high-gain FEL in a large storage ring such as PEP and analyze the equilibrium solution. We show that ...
Free electron lasers (FELs) have until now been limited to the infrared, visible and near UV part of the electromagnetic spectrum . Recent progress in FEL physics and technology is changing this situation, and an effort is now under way to design and build FELs operating at wavelengths shorter than 100 nm . Three main avenues are being followed to reach this goal : FELs oscillators based on sto...
There is strong interest in the development of x-ray free electron lasers (x-ray FELs). The interest is driven by the scientific opportunities provided by intense, coherent x-rays. An x-ray FEL has all the characteristics of a fourthgeneration source: brightness several orders of magnitude greater than presently achieved in third-generation sources, full transverse coherence, and sub-picosecond...
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