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1.
Preliminary Measurements of the High-Gain FEL Radiation Properties along the Radiator / Shaftan, Timur ; Loos, Henrik ; Sheehy, Brian ; Yu Li Hua
We present experimental results on evolution of properties of the DUV FEL output radiation along the radiator. Intercepting the electron beam at the different locations inside the undulator we recorded and analyzed transverse profiles, spectra and intensity of the FEL output. [...]
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. THPOS62
2.
Spectral Phase Modulation and chirped pulse amplification in High Gain Harmonic Generation / Wu, Zilu ; Johnson, Erik ; Krinsky, Sam ; Loos, Henrik ; Murphy, James ; Shaftan, Timur ; Sheehy, Brian ; Shen, Yuzhen ; Wang, Xijie ; Yu Li Hua
High Gain Harmonic Generation (HGHG), because it produces longitudinally coherent pulses derived from a coherent seed, presents remarkable possibilities for manipulating FEL pulses. If spectral phase modulation imposed on the seed modulates the spectral phase of the HGHG in a deterministic fashion, then chirped pulse amplification, pulse shaping, and coherent control experiments at short wavelengths become possible. [...]
2004 External links: Published contribution from JACoW; Published presentation from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. WEAOS02
3.
Experimental Demostration of Wavelength Tuning in High-Gain Harmonic Generation Free Electron Laser / Shaftan, Timur ; Johnson, Erik ; Krinsky, Sam ; Loos, Henrik ; Murphy, James ; Rakowsky, George ; Rose, James ; Sheehy, Brian ; Skaritka, John ; Wang, Xijie et al.
We present experimental results on tuning of the HGHG FEL output wavelength while holding the input seed wavelength constant. Using compression of the initially chirped beam in the HGHG dispersion section we have measured the wavelength shift of about 1% around the nominal value of 266 nm. [...]
2004 External links: Published contribution from JACoW; Published presentation from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. WEAIS01
4.
The Upgrade of the DUV-FEL Facility at the BNL / Wang, Xijie ; Loos, Henrik ; Murphy, James ; Rakowsky, George ; Rose, James ; Sheehy, Brian ; Shen, Yuzhen ; Skaritka, John ; Wu, Zilu ; Yu Li Hua
The DUV-FEL at BNL, is the world's only facility dedicated to laser-seeded FEL R&D; and its applications. The HGHG at the DUV-FEL reached saturation at 266 nm with 800 nm seeding [1] in 2002. [...]
2004 External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. MOPOS67
5.
NSLS II : The Future of the NSLS / Murphy, James ; Bengtsson, Johan ; Biscardi, Richard ; Blednykh, Alexei ; Carr, Larry ; Casey, William ; Chouhan, Shailendra ; Dierker, Steven ; Haas, Edwin ; Heese, Richard et al.
The National Synchrotron Light Source at BNL was the first dedicated light source facility and it has now operated for more than 20 years. During this time the user community has grown to more than 2400 users annually. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3345
6.
Simulations and Experiments of Electron Beams Pre-Modulated at the Photocathode / Neumann, Jonathan G ; Carr, Larry ; Fiorito, Ralph ; Graves, William ; Loos, Henrik ; Shaftan, Timur ; Sheehy, Brian ; Shen, Yuzhen ; Wu, Zilu
The University of Maryland and the Source Development Laboratory at Brookhaven National Laboratory have been collaborating on a project that explores the use of electron beam pre-modulation at the cathode to control the longitudinal structure of the electron beam. This technique could be applied to creating deliberate modulations which can lead to the generation of terahertz radiation, or creating a smooth profile in order to supress radiation. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.704
7.
Temporal E-Beam Shaping in an S-Band Accelerator / Loos, Henrik ; Boscolo, Manuela ; Dowell, David ; Ferrario, Massimo ; Gilevich, Sasha ; Limborg-Deprey, Cecile ; Murphy, James ; Petrarca, Massimo ; Serafini, Luca ; Sheehy, Brian et al.
New short-wavelength SASE light sources will require very bright electron beams, brighter in some cases than is now possible. One method for improving brightness involves the careful shaping of the electron bunch to control the degrading effects of its space charge forces. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.642
8.
First Results from the DUV-FEL Upgrade at BNL / Wang, Xijie ; Loos, Henrik ; Murphy, James ; Pinayev, Igor ; Rakowsky, George ; Rose, James ; Shaftan, Timur ; Sheehy, Brian ; Skaritka, John ; Wu, Zilu et al.
The DUV-FEL at BNL is the world’s only facility dedicated to laser-seeded FEL R&D; and its applications. Tremendous progress was made in both HGHG FEL and its applications in the last couple years.*,** In response to the requests of many users to study chemical science at the facility, the DUV-FEL linac was upgraded from 200 to 300 MeV to enable the HGHG FEL to produce 100 uJ pulses of 100 nm light. [...]
2005
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TOAB003
9.
NSLS II: A Future Source for the NSLS / Murphy, James ; Bengtsson, Johan ; Berman, Lonny ; Biscardi, Richard ; Blednykh, Alexei ; Carr, Larry ; Casey, William ; Dierker, Steven ; Haas, Edwin ; Heese, Richard et al.
Upton, NY : Brookhaven Nat. Lab., 2004 - 3 p. External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.2457

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