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in creator/contributor: "Limborg-Deprey, C."  
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Beam Dynamics Study of X-Band Linac Driven X-Ray FELS

Description: Several linac driven X-ray Free Electron Lasers (XFELs) are being developed to provide high brightness photon beams with very short, tunable wavelengths. In this paper, three XFEL configurations are proposed that achieve LCLS-like performance using X-band linac drivers. These linacs are more versatile, efficient and compact than ones using S-band or C-band rf technology. For each of the designs, the overall accelerator layout and the shaping of the bunch longitudinal phase space are described b… more
Date: December 13, 2011
Creator: Adolphsen, C.; Limborg-Deprey, C.; Raubenheimer, T. O.; Wu, J. & Sun, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An X-Band Gun Test Area at SLAC

Description: The X-Band Test Area (XTA) is being assembled in the NLCTA tunnel at SLAC to serve as a test facility for new RF guns. The first gun to be tested will be an upgraded version of the 5.6 cell, 200 MV/m peak field X-band gun designed at SLAC in 2003 for the Compton Scattering experiment run in ASTA. This new version includes some features implemented in 2006 on the LCLS gun such as racetrack couplers, increased mode separation and elliptical irises. These upgrades were developed in collaboration w… more
Date: September 7, 2012
Creator: Limborg-Deprey, C.; Adolphsen, C.; Chu, T. S.; Dunning, M. P.; Jobe, R. K.; Jongewaard, E. N. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wakefield Computations for the Injector (Part I)

Description: In this document, we report on basic wakefield computations used to establish the impedance budget for the LCLS injector. Systematic comparisons between analytic formulae and results from ABCI are done. Finally, a comparison between 2D and 3D wakefield calculations are given for a cross. The three parts of the document are presented as follows: (1) ABCI computations for a few structures (Flange, Bellows...); (2) Comparison analytic with ABCI runs; and (3) Comparison Cross and Cavity using MAFIA. more
Date: December 13, 2010
Creator: Limborg-Deprey, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Commissioning of the LCLS LINAC

Description: The Linac Coherent Light Source (LCLS) X-ray free electron laser project is currently under construction at the Stanford Linear Accelerator Center (SLAC). A new injector and upgrades to the existing accelerator were installed in two phases in 2006 and 2007. We report on the commissioning of the injector, the two new bunch compressors at 250MeV and 4.3 GeV, and transverse and longitudinal beam diagnostics up to the end of the existing linac at 13.6 GeV. The commissioning of the new transfer line… more
Date: June 11, 2010
Creator: Loos, H.; Akre, R.; Brachmann, A.; Decker, F. J.; Ding, Y.; Dowell, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wakefield Calculations for Radiation Stopper 1 (RST1)

Description: The main result of this note is that no wakefield mitigation is required for the Radiation Stopper (RST1) in the LCLS injector. The RST1 geometry is not symmetric in the vertical direction, and we derive a slight modification to the diffraction model wake for a cylindrically symmetric (2D) cavity that can be used for this problem. Performing a full 3D MAFIA calculation for the nominal 1 mm (rms) long bunch, we show that the modified diffraction model well describes the wakefields generated in R… more
Date: December 13, 2010
Creator: Limborg-Deprey, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

RF Design of the LCLS Gun

Description: Final dimensions for the LCLS RF gun are described. This gun, referred to as the LCLS gun, is a modified version of the UCLA/BNL/SLAC 1.6 cell S-Band RF gun [1], referred to as the prototype gun. The changes include a larger mode separation (15 MHz for the LCLS gun vs. 3.5 MHz for the prototype gun), a larger radius at the iris between the 2 cells, a reduced surface field on the curvature of the iris between the two cells, Z power coupling, increased cooling channels for operation at 120 Hz, du… more
Date: December 13, 2010
Creator: Limborg-Deprey, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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