Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Valery A Dolgashev"'
Autor:
Valery A. Dolgashev
Publikováno v:
Applied Sciences, Vol 13, Iss 19, p 10849 (2023)
This article will review methods used at the SLAC National Accelerator Laboratory and other world accelerator laboratories to design high-gradient normal conducting accelerating structures. A quest for compact radio-frequency linacs fueled decades of
Externí odkaz:
https://doaj.org/article/7c8776dcc75a4f93b5d9f5566fe079a7
Autor:
Valery A. Dolgashev, Gordon Bowden, Yuantao Ding, Paul Emma, Patrick Krejcik, James Lewandowski, Cecile Limborg, Michael Litos, Juwen Wang, Dao Xiang
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 10, p 102801 (2014)
Performance of the x-ray free electron laser Linac Coherent Light Source (LCLS) and the Facility for Advanced Accelerator Experimental Tests (FACET) is determined by the properties of their extremely short electron bunches. Multi-GeV electron bunches
Externí odkaz:
https://doaj.org/article/5326d2126bf04446bcfda2aa18876a15
Autor:
Brian J. Munroe, Alan M. Cook, Michael A. Shapiro, Richard J. Temkin, Valery A. Dolgashev, Lisa L. Laurent, James R. Lewandowski, A. Dian Yeremian, Sami G. Tantawi, Roark A. Marsh
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 1, p 012005 (2013)
An improved single-cell photonic band-gap (PBG) structure with an inner row of elliptical rods (PBG-E) was tested with high power at a 60 Hz repetition rate at X-band (11.424 GHz), achieving a gradient of 128 MV/m at a breakdown probability of 3.6×1
Externí odkaz:
https://doaj.org/article/786d56137a944f378fda34e0aef18a09
Autor:
Roark A. Marsh, Michael A. Shapiro, Richard J. Temkin, Valery A. Dolgashev, Lisa L. Laurent, James R. Lewandowski, A. Dian Yeremian, Sami G. Tantawi
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 2, p 021301 (2011)
In order to understand the performance of photonic band-gap (PBG) structures under realistic high gradient, high power, high repetition rate operation, a PBG accelerator structure was designed and tested at X band (11.424 GHz). The structure consiste
Externí odkaz:
https://doaj.org/article/b5fc82f19c3e41bfba3ea363d386f44b
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 5, p 051001 (2009)
The shape of an rf pulse is distorted due to dispersion encountered in acceleration through traveling-wave linear accelerator structures. Simulations are made to ascertain the severity of this distortion in cavities designed to operate at various gro
Externí odkaz:
https://doaj.org/article/b6623e7d7869437b8208563a50675ffe
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 8, Iss 6, p 064401 (2005)
We numerically study properties of primary dark currents in an X-band accelerating structure. For the H60VG3 structure considered for the Next Linear Collider (NLC) we first perform a fairly complete (with some approximations) calculation of dark-cur
Externí odkaz:
https://doaj.org/article/059f39e8313a4740999b33194206161f
Autor:
Sami G. Tantawi, Christopher D. Nantista, Valery A. Dolgashev, Chris Pearson, Janice Nelson, Keith Jobe, Jose Chan, Karen Fant, Josef Frisch, Dennis Atkinson
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 8, Iss 4, p 042002 (2005)
We present a multimode X-band rf pulse compression system suitable for a TeV-scale electron-positron linear collider such as the Next Linear Collider (NLC). The NLC main linac operating frequency is 11.424 GHz. A single NLC rf unit is required to pro
Externí odkaz:
https://doaj.org/article/48980247ff9749d8abfb9b1592c23baa
Autor:
Muhammad Shumail, Valery A. Dolgashev
Publikováno v:
Physica Scripta. 94:065208
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48c57b5a30d27b74721783839841ec98
https://doi.org/10.1088/1402-4896/ab07e3
https://doi.org/10.1088/1402-4896/ab07e3
Autor:
Valery A. Dolgashev
Publikováno v:
AIP Conference Proceedings.
We review recent results of R&D efforts directed toward increasing the operating gradients of normal conducting accelerating structures. This work includes study of the basic physics of rf breakdown phenomena and high power tests of full scale accele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1e493c9777c22f2cd506d9cae36f573
https://doi.org/10.1063/1.4773679
https://doi.org/10.1063/1.4773679