Zobrazeno 1 - 10
of 1 053
pro vyhledávání: '"W. Gai"'
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 10, p 103404 (2017)
A transversely inhomogeneous laser distribution on the photocathode surface generally produces electron beams with degraded beam quality. In this paper, we explore the use of microlens arrays to dramatically improve the transverse uniformity of an ul
Externí odkaz:
https://doaj.org/article/99076413ffe24421b372256cde548c7d
Publikováno v:
Physical Review Accelerators and Beams, Vol 19, Iss 12, p 121301 (2016)
The longitudinal shape, i.e., the current profile, of an electron bunch determines the transformer ratio in a collinear wakefield accelerator and thus methods are sought to control the longitudinal bunch shape. The emittance exchange (EEX) appears to
Externí odkaz:
https://doaj.org/article/5a21f71082874e87a655a543bcd0a2ea
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 17, Iss 9, p 091302 (2014)
A study into the maximum acceleration gradient, E_{z}^{max}, in a collinear dielectric wakefield accelerator due to single bunch beam breakup (SBBU) is presented. The longitudinal wakefield is proportional to charge over radius squared (E_{z}∼Q/a^{
Externí odkaz:
https://doaj.org/article/ee483e171a8740bcb89df6de402a052e
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 1, p 011301 (2012)
The transformer ratio, characterizing the ratio of maximum accelerating field behind the drive bunch to the maximum decelerating field inside the drive bunch, is one of the key parameters for characterizing the performance of collinear wakefield acce
Externí odkaz:
https://doaj.org/article/2346737d8ece4557ae9048ee34381760
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 2, p 021302 (2011)
The transformer ratio is defined as the ratio of the maximum energy gain of the witness bunch to the maximum energy loss experienced by the drive bunch (or a bunch within a multidrive bunch train). This plays an important role in the collinear wakefi
Externí odkaz:
https://doaj.org/article/3c46cfc64bd246a6a6e141f49cad88aa
Autor:
C. Jing, F. Gao, S. Antipov, Z. Yusof, M. Conde, J. G. Power, P. Xu, S. Zheng, H. Chen, C. Tang, W. Gai
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 12, p 121302 (2009)
Wakefield excitation has been experimentally studied in a three-cell X-band standing wave photonic band gap (PBG) accelerating structure. Major monopole (TM_{01}- and TM_{02}-like) and dipole (TM_{11}- and TM_{12}-like) modes were identified and char
Externí odkaz:
https://doaj.org/article/ae1d9097f0ae4403a597bddfb9251361
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 12, Iss 12, p 124201 (2009)
We report on an experimental study of space-charge effects in a radio-frequency (rf) photoinjector. A 5 MeV electron bunch, consisting of a number of beamlets separated transversely, was generated in an rf photocathode gun and propagated in the succe
Externí odkaz:
https://doaj.org/article/0ae6aae6b97649fcbe8a97e60fd5f107
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 11, Iss 4, p 041301 (2008)
Dielectric-loaded power extraction is a method for the generation of high-power radio frequency (rf) waves under development for future particle accelerators. In this method, a high-charge electron beam drives a wakefield in a dielectric-loaded waveg
Externí odkaz:
https://doaj.org/article/ebe33d6254c44c619d83d0d3b2c16fe6
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 3, Iss 10, p 101302 (2000)
We report on the experimental demonstration of a novel wakefield acceleration technique where a short electron bunch excites a broadband harmonic frequency spectrum, in a cylindrical dielectric structure, to synthesize an accelerating waveform. The s
Externí odkaz:
https://doaj.org/article/7da8d9e6d12e4749a89648f01a8bf369