Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Martin Dohlus"'
Autor:
Igor Zagorodnov, Martin Dohlus
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 9, p 094401 (2023)
We consider analytical expressions for beam impedance of round, rectangular, and Π-shaped waveguides with anisotropic surface impedance of arbitrary nature. The formulas are given for relativistic and nonrelativistic cases and the impedance matrix o
Externí odkaz:
https://doaj.org/article/4eedcfba7a3843b797e01c7c98cae7de
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 6, p 064402 (2023)
We present analytical and numerical studies of short-range wakefields in an L-shaped corrugated structure. This structure has variable streaking polarization and the quadrupole wakefield component is suppressed when the beam moves with equal distance
Externí odkaz:
https://doaj.org/article/17944128f6af44ffb3de266c7073e0b0
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 2, p 024401 (2019)
We consider the collective beam dynamics in the accelerator of the European X-ray Free Electron Laser for electron bunches with charges of 250 and 500 pC. The dynamics has been studied numerically with different computer programs, and we struggle to
Externí odkaz:
https://doaj.org/article/0d8ea5f9950b4e108a1119d4021ff6e5
Autor:
Thorsten Hellert, Martin Dohlus
Publikováno v:
Physical Review Accelerators and Beams, Vol 21, Iss 4, p 042001 (2018)
Superconducting TESLA-type cavities are widely used to accelerate electrons in long bunch trains, such as in high repetition rate free electron lasers. The TESLA cavity is equipped with two higher order mode couplers and a fundamental power coupler (
Externí odkaz:
https://doaj.org/article/b4e7c66aff7b41299d665f3051671c2a
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 10, p 100702 (2017)
FLASH and the European XFEL are SASE-FEL user facilities, at which superconducting TESLA cavities are operated in a pulsed mode to accelerate long bunch-trains. Several cavities are powered by one klystron. While the low-level rf system is able to st
Externí odkaz:
https://doaj.org/article/23631874787a42cfaffa0b2fc50a7de0
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 5, p 054401 (2012)
In particle accelerators a preferred direction, the direction of motion, is well defined. If in a numerical calculation the (numerical) dispersion in this direction is suppressed, a quite coarse mesh and moderate computational resources can be used t
Externí odkaz:
https://doaj.org/article/25f5eb930a6848bc98d9301289445919
Autor:
Igor Zagorodnov, Martin Dohlus
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 14, Iss 1, p 014403 (2011)
In this paper we introduce, for the first time, an analytical solution (up to the third order) for a multistage bunch compression and acceleration system without collective effects. The solution for the system with collective effects is found by an i
Externí odkaz:
https://doaj.org/article/b477afc65b32412fb67c7f98d42dfdee
Publikováno v:
Nuclear instruments & methods in physics research / A 1043, 167490 (2022). doi:10.1016/j.nima.2022.167490
Nuclear instruments & methods in physics research / A 1043, 167490 (2022). doi:10.1016/j.nima.2022.167490
We derive an analytical approximation of the short-range longitudinal wake function of undulator lines at the European x-ray free electron
We derive an analytical approximation of the short-range longitudinal wake function of undulator lines at the European x-ray free electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95273bc08299538c3d8dc44b48f9714b
Autor:
Igor Zagorodnov, Martin Dohlus
Publikováno v:
Nuclear instruments & methods in physics research / A 1009, 165482 (1-22) (2021). doi:10.1016/j.nima.2021.165482
Nuclear instruments & methods in physics research / A 1009, 165482 (1-22) (2021). doi:10.1016/j.nima.2021.165482
We derive a power series representation of an arbitrary electromagnetic field near some axis through the coaxial field components on
We derive a power series representation of an arbitrary electromagnetic field near some axis through the coaxial field components on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1eed359db0b27fdfd6ba9d5fcaebcdae
Autor:
Michaela Marx, Vasili Tsakanov, Mikayel Ivanyan, Klaus Floettmann, Martin Dohlus, Francois Lemery
Publikováno v:
Journal of synchrotron radiation 28(1), 18-27 (2021). doi:10.1107/S1600577520014058
Journal of Synchrotron Radiation
Journal of Synchrotron Radiation
Journal of synchrotron radiation 28(1), 18 - 27 (2021). doi:10.1107/S1600577520014058
An electron beam passing through a tube of small inner diameter which is lined on the inside with a dielectric layer will radiate energy in the THz range due t
An electron beam passing through a tube of small inner diameter which is lined on the inside with a dielectric layer will radiate energy in the THz range due t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533d6a6bd40d92f56a572e9643fbef6b