Zobrazeno 1 - 9
of 9
pro vyhledávání: '"F. E. Hannon"'
Autor:
V. Shutthanandan, Z. Zhu, M. L. Stutzman, F. E. Hannon, C. Hernandez-Garcia, M. I. Nandasiri, S. V. N. T. Kuchibhatla, S. Thevuthasan, W. P. Hess
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 6, p 063501 (2012)
Degradation of the photocathode materials employed in photoinjectors represents a challenge for sustained operation of nuclear physics accelerators and high power free electron lasers (FEL). Photocathode quantum efficiency degradation is due to resid
Externí odkaz:
https://doaj.org/article/18dea5b68775415babbca904e664739f
Autor:
Yan Wang, M. Tiefenback, Riad Suleiman, Carlos Hernandez-Garcia, M. A. Mamun, G. Palacios-Serrano, Helmut Baumgart, J. Jordan, Shukui Zhang, Philip Adderley, Joseph Grames, J. Hansknecht, Jay Benesch, R. Montoya Soto, B. Bullard, M. Poelker, Geoffrey Krafft, C. A. Valerio Lizarraga, Joseph Gubeli, A. Canales Ramos, R. Kazimi, S. Wijethunga, F. E. Hannon, Marcy Stutzman, J. Yoskowitz
Publikováno v:
Physical Review Accelerators and Beams. 22
This contribution describes the latest milestones of a multiyear program to build and operate a compact $\ensuremath{-}300\text{ }\text{ }\mathrm{kV}$ dc high voltage photogun with inverted insulator geometry and alkali-antimonide photocathodes. Phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a346bae49a5ec7acc5853dffea5f7c45
https://doi.org/10.1103/physrevaccelbeams.22.113401
https://doi.org/10.1103/physrevaccelbeams.22.113401
Autor:
W. Moore, A. Sanchez, E. Forman, M. Poelker, M. Pablo, B. Roberts, M. M. Ali, D. Speirs, Joseph Grames, F. E. Hannon, R. Kazimi
Publikováno v:
Physical Review Accelerators and Beams, Vol 19, Iss 5, p 052801 (2016)
A compact, harmonically resonant cavity with fundamental resonant frequency 1497 MHz was used to evaluate the temporal characteristics of electron bunches produced by a 130 kV dc high voltage spin-polarized photoelectron source at the Continuous Elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed301605df3fbe49950118732fae7ee1
https://doi.org/10.1103/physrevaccelbeams.19.052801
https://doi.org/10.1103/physrevaccelbeams.19.052801
Autor:
Shukui Zhang, J. M. Klopf, Gustavious P. Williams, David Douglas, F. E. Hannon, Chris Tennant, R. Legg, S.V. Benson, M. Shinn, Pavel Evtushenko, Carlos Hernandez-Garcia, George Neil
Publikováno v:
Synchrotron Radiation News. 25:32-39
From the early days of free-electron lasers (FELs), the idea of lasing at wavelengths where gain media had not previously existed was one of the most attractive aspects of these devices. The spectral region in the soft X-ray was both inviting, due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb67e280564d6962667df3d1b32c5414
https://doi.org/10.1080/08940886.2012.645422
https://doi.org/10.1080/08940886.2012.645422
Autor:
M. Shinn, George R. Neil, Shukui Zhang, S.V. Benson, David Douglas, R. Legg, Gustavious P. Williams, F. E. Hannon, Pavel Evtushenko, Chris Tennant, Carlos Hernandez-Garcia, J. M. Klopf
Publikováno v:
Journal of Modern Optics. 58:1438-1451
Advances in superconducting linac technology offer the possibility of an upgrade of the Jefferson Lab Free Electron Laser (JLab FEL) facility to an oscillator-based VUV-FEL that would produce 6 × 1012 coherent 100 eV photons per pulse at multi-MHz r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d97f78cce9ab3b10c28df3f457c389
https://doi.org/10.1080/09500340.2011.606375
https://doi.org/10.1080/09500340.2011.606375
Autor:
Gabriel G. Palacios-Serrano, F. E. Hannon, Helmut Baumgart, Carlos Hernandez-Garcia, Matt Poelker
Publikováno v:
Review of Scientific Instruments. 89:104703
Nuclear physics experiments performed at the Continuous Electron Beam Accelerator Facility (CEBAF) at the Jefferson Lab require a DC high voltage photogun to generate polarized electron beams from GaAs photocathodes. The photogun uses a tapered ceram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::945ea54097890e14bc33ab5dfc553cfa
https://doi.org/10.1063/1.5048700
https://doi.org/10.1063/1.5048700
Publikováno v:
Review of Scientific Instruments. 88:093303
The design and fabrication of electrodes for direct current (dc) high voltage photoemission electron guns can significantly influence their performance, most notably in terms of maximum achievable bias voltage. Proper electrostatic design of the trip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f704a38c657a5998f689954c96c213a
https://doi.org/10.1063/1.4994794
https://doi.org/10.1063/1.4994794
Autor:
James Boyce, Shukui Zhang, Pavel Evtushenko, Michelle D. Shinn, Gustavious P. Williams, Carlos Hernandez-Garcia, S.V. Benson, David Douglas, J. M. Klopf, Chris Tennant, F. E. Hannon, George R. Neil
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 649:9-11
Jefferson Lab operates a pair of oscillator-based continuous-wave Free Electron Lasers (FELs) as a linac-based next generation light source with pulse repetition rates up to 75 MHz. The facility uses an energy recovered linac design for efficiency of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c40df3aadbdcd819262db8b3c7eaef84
https://doi.org/10.1016/j.nima.2010.12.093
https://doi.org/10.1016/j.nima.2010.12.093
Autor:
R. Legg, George R. Neil, Shukui Zhang, Michelle D. Shinn, Gwyn P. Williams, F. E. Hannon, Chris Tennant, Pavel Evtushenko, J. M. Klopf, Stephen V. Benson, David Douglas, Carlos Hernandez-Garcia
Publikováno v:
Journal of Physics: Conference Series. 425:072002
Jefferson Lab operates a superconducting energy recovered linac which is operated with CW RF and which powers oscillator-based IR and UV Free-Electron Lasers (FELs) with diffraction limited sub-picosecond pulses with >1013 photons per pulse (1.0%BW)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a40bdf4ada2898af2f191abd6169b21f
https://doi.org/10.1088/1742-6596/425/7/072002
https://doi.org/10.1088/1742-6596/425/7/072002