Zobrazeno 1 - 10
of 5 592
pro vyhledávání: '"J. Welch"'
Autor:
R. Zgadzaj, J. Welch, Y. Cao, L. D. Amorim, A. Cheng, A. Gaikwad, P. Iapozzutto, P. Kumar, V. N. Litvinenko, I. Petrushina, R. Samulyak, N. Vafaei-Najafabadi, C. Joshi, C. Zhang, M. Babzien, M. Fedurin, R. Kupfer, K. Kusche, M. A. Palmer, I. V. Pogorelsky, M. N. Polyanskiy, C. Swinson, M. C. Downer
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract Laser-driven plasma accelerators provide tabletop sources of relativistic electron bunches and femtosecond x-ray pulses, but usually require petawatt-class solid-state-laser pulses of wavelength λ L ~ 1 μm. Longer-λ L lasers can potential
Externí odkaz:
https://doaj.org/article/38f7101263ff44a8a3a54cfb6e0c9c46
Publikováno v:
Proceedings of the International Association of Hydrological Sciences, Vol 372, Pp 297-303 (2015)
Houston, Texas is one of the places that first employed high-accuracy GPS technology for land subsidence monitoring beginning in the late 1980s. Currently, there are over 170 permanent GPS stations located in the Houston metropolitan area. This ar
Externí odkaz:
https://doaj.org/article/9d9699a3a51c4e958322b98056beb616
Autor:
Y. Ding, K. L. F. Bane, W. Colocho, F.-J. Decker, P. Emma, J. Frisch, M. W. Guetg, Z. Huang, R. Iverson, J. Krzywinski, H. Loos, A. Lutman, T. J. Maxwell, H.-D. Nuhn, D. Ratner, J. Turner, J. Welch, F. Zhou
Publikováno v:
Physical Review Accelerators and Beams, Vol 19, Iss 10, p 100703 (2016)
A new operating mode has been developed for the Linac Coherent Light Source (LCLS) in which we shape the longitudinal phase space of the electron beam. This mode of operation is realized using a horizontal collimator located in the middle of the firs
Externí odkaz:
https://doaj.org/article/25768a29005844e09c5a072847839735
Autor:
D. Ratner, A. Brachmann, F. J. Decker, Y. Ding, D. Dowell, P. Emma, A. Fisher, J. Frisch, S. Gilevich, Z. Huang, P. Hering, R. Iverson, J. Krzywinski, H. Loos, M. Messerschmidt, H. D. Nuhn, T. Smith, J. Turner, J. Welch, W. White, J. Wu
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 6, p 060701 (2011)
The linac coherent light source (LCLS) is a self-amplified spontaneous emission (SASE) free-electron laser (FEL) operating at fundamental photon energies from 0.5 to 10 keV. Characterization of the higher harmonics present in the FEL beam is importan
Externí odkaz:
https://doaj.org/article/14afabc0384a41c0af72f11ed30ee3e6
Autor:
Z. Huang, A. Brachmann, F.-J. Decker, Y. Ding, D. Dowell, P. Emma, J. Frisch, S. Gilevich, G. Hays, Ph. Hering, R. Iverson, H. Loos, A. Miahnahri, H.-D. Nuhn, D. Ratner, G. Stupakov, J. Turner, J. Welch, W. White, J. Wu, D. Xiang
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 13, Iss 2, p 020703 (2010)
The very bright electron beam required for an x-ray free-electron laser (FEL), such as the linac coherent light source (LCLS), is susceptible to a microbunching instability in the magnetic bunch compressors, prior to the FEL undulator. The uncorrelat
Externí odkaz:
https://doaj.org/article/649f2309cd1d42ce9fd218d5bd0a4f5e
Autor:
K. L. F. Bane, F.-J. Decker, Y. Ding, D. Dowell, P. Emma, J. Frisch, Z. Huang, R. Iverson, C. Limborg-Deprey, H. Loos, H.-D. Nuhn, D. Ratner, G. Stupakov, J. Turner, J. Welch, J. Wu
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 3, p 030704 (2009)
In order to reach the high peak current required for an x-ray free electron laser, two separate magnetic dipole chicanes are used in the Linac Coherent Light Source accelerator to compress the electron bunch length in stages. In these bunch compresso
Externí odkaz:
https://doaj.org/article/98ed941ee4e64652a8cb1c4c8d955109
Autor:
R. Akre, D. Dowell, P. Emma, J. Frisch, S. Gilevich, G. Hays, Ph. Hering, R. Iverson, C. Limborg-Deprey, H. Loos, A. Miahnahri, J. Schmerge, J. Turner, J. Welch, W. White, J. Wu
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 11, Iss 3, p 030703 (2008)
The Linac Coherent Light Source is a SASE x-ray free-electron laser (FEL) project presently under construction at SLAC [J. Arthur et al., SLAC-R-593, 2002.]. The injector section, from drive laser and rf photocathode gun through first bunch compresso
Externí odkaz:
https://doaj.org/article/849b741e9c7f41f48f78648864035ceb
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 7, Iss 7, p 074401 (2004)
A microbunching instability driven by longitudinal space charge, coherent synchrotron radiation, and linac wakefields is studied for the linac coherent light source (LCLS) accelerator system. Since the uncorrelated (local) energy spread of electron b
Externí odkaz:
https://doaj.org/article/4ef5e103314247cc8c9177d71010007e
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 1, Iss 2, p 022401 (1998)
The Cornell electron storage ring (CESR) phase-III upgrade plan includes very strong permanent magnet quadrupoles in front of the cryostat for the superconducting quadrupoles and physically as close as possible to the interaction point. Together with
Externí odkaz:
https://doaj.org/article/03a6a5bb1933449a8512638683a8ea3a
Autor:
Behringer, Paul J. Welch
Publikováno v:
International Journal of Military History & Historiography; 2024, Vol. 44 Issue 2, p208-249, 42p