Zobrazeno 1 - 10
of 71
pro vyhledávání: '"G. Scheitrum"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 241:641-644
Many studies have demonstrated that improving the surface smoothness and cleanliness of high voltage electrodes increases the voltage standoff capability, but none have specifically investigated the role of nano-scale and atomic level surface roughne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::592d9085cca9d3c4054c38f20d79e022
https://doi.org/10.1016/j.nimb.2005.07.107
https://doi.org/10.1016/j.nimb.2005.07.107
Publikováno v:
IEEE Transactions on Plasma Science. 31:1317-1324
In order to make millimeter-wave sources practical, improved fabrication methods are required. The use of Lithographie, Galvanoformung, Abformung; German acronym (LIGA) to fabricate a coupled-cavity traveling-wave tube (TWT) is presented. The propose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34950e6daac147a48d52cff179398fea
https://doi.org/10.1109/tps.2003.820677
https://doi.org/10.1109/tps.2003.820677
Autor:
G. Scheitrum, Deepika Gajaria, John Atkinson, K. Lind, G. Caryotakis, C. Meyer, Adam Balkcum, Aaron Jensen, Mark Perrin, M. Cusick, Thomas Grant
Publikováno v:
2009 IEEE International Vacuum Electronics Conference.
The Sheet Beam Klystron (SBK) is characterized by a large drift tube, which allows the use of high beam current at a low voltage, resulting in low beam current density, high efficiency and the possibility of PPM focusing. CPI has designed, manufactur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80fe59666b47e8b5ccf81a50ea879123
https://doi.org/10.1109/ivelec.2009.5193419
https://doi.org/10.1109/ivelec.2009.5193419
Autor:
L. Laurent, G. Scheitrum
Publikováno v:
2007 IEEE International Vacuum Electronics Conference.
In this study, the experimental results for tungsten and molybdenum are compared to copper under the same high field conditions (350 MV/m and 500 MV/m). The RF pulse length for all three experiments is 150 ns. Tungsten and molybdenum are both refract
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221fb6e978e911bc235844ff7186edf9
https://doi.org/10.1109/ivelec.2007.4283276
https://doi.org/10.1109/ivelec.2007.4283276
Autor:
A. Haase, B. Steele, G. Caryotakis, M. Neubauer, G. Scheitrum, A. Burke, E. Jongewaard, Aaron Jensen
Publikováno v:
2007 IEEE International Vacuum Electronics Conference.
SLAC has developed a 50 kW peak power, 2.5 kW average power, W-band, sheet beam klystron (WSBK). The magnetic circuit was modified to provide increased field at the start of the penultimate cavity to account for RF bunching and defocusing. The output
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7fdb5c5ad83f2aa4e54bc3add0b0f2e
https://doi.org/10.1109/ivelec.2007.4283281
https://doi.org/10.1109/ivelec.2007.4283281
Autor:
K. Rauenbuehler, A. Burke, A. Krasnykh, E. Jongewaard, M. Neubauer, G. Caryotakis, Aaron Jensen, R. Phillips, G. Scheitrum
Publikováno v:
Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004..
Sheet beam devices provide important advantages for very high power, narrow bandwidth RF sources like accelerator klystrons. Reduced current density and increased surface area result in increased power capability, reduced magnetic fields for focusing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dae1189ac485d5e40ae6fe36927dc78
https://doi.org/10.1109/icimw.2004.1422195
https://doi.org/10.1109/icimw.2004.1422195
Publikováno v:
2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources.
A sheet-beam klystron has been designed, built and tested in the klystron department at SLAC. The first prototype, WSBK-1A, is a 95 GHz W-band device with a 74 kV, 3.6 A electron gun. Favorable hot-test results with greater than 90% beam transmission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f12789ad72cf6d100e374dd34c460b
https://doi.org/10.1109/ivelec.2006.1666175
https://doi.org/10.1109/ivelec.2006.1666175
Publikováno v:
2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources.
AJDISK is a useful design tool for sheet beams. The code is capable of simulating sheet beam klystrons on modern computers in under a minute. The code can accurately and quickly predict saturated gain, reduced plasma wavelength, cavity voltages, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eb4ce462cb610c6338b2f02604ef088
https://doi.org/10.1109/ivelec.2006.1666396
https://doi.org/10.1109/ivelec.2006.1666396
Autor:
R. Phillips, V. Besong, G. Scheitrum, E. Jongewaard, Aaron Jensen, K. Rauenbuehler, K. Granlund, A. Burke, R. Steele
Publikováno v:
2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources.
A sheet-beam klystron has been designed, built and tested in the klystron department at SLAC. The first prototype, WSBK-1A, is a 95 GHz W-band device with a 74 kV, 3.6 A electron gun. Electrostatic focusing in the gun produces a sheet beam of approxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f616541e4e7f7268c370ca900019bf
https://doi.org/10.1109/ivelec.2006.1666394
https://doi.org/10.1109/ivelec.2006.1666394
Autor:
Aaron Jensen, E. Jongewaard, M. Neubauer, G. Scheitrum, G. Caryotakis, R. Steele, R. Phillips, A. Burke
Publikováno v:
2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources.
SLAC is developing sheet beam klystron technology for narrow bandwidth, high peak and average power applications from L-band to W-band. Sheet beam devices are advantageous for several reasons. The primary advantage is the increased surface area in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b91147092ef9b8c9830e33a02a4e943d
https://doi.org/10.1109/ivelec.2006.1666392
https://doi.org/10.1109/ivelec.2006.1666392