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pro vyhledávání: '"Dohlus, Martin"'
This note presents optimization results for an injector with a super-conducting gun for the cw operation of the European XFEL, the corresponding start-to-end simulation calculations for the beam transport to the undulators and SASE calculations of th
Externí odkaz:
http://arxiv.org/abs/2111.01756
Autor:
Floettmann, Klaus, Lemery, Francois, Dohlus, Martin, Marx, Michaela, Ivanyan, Mikayel, Tsakanov, Vasili
An electron beam passing through a tube which is lined on the inside with a dielectric layer will radiate energy in the THz range due to the interaction with the boundary. The resonant enhancement of certain frequencies is conditioned by structure pa
Externí odkaz:
http://arxiv.org/abs/2005.05640
Autor:
Zagorodnov, Igor, Dohlus, Martin
We derive a power series representation of an arbitrary electromagnetic field near some axis through the coaxial field components on the axis. The obtained equations are compared with Fourier-Bessel series approach and verified by several examples. I
Externí odkaz:
http://arxiv.org/abs/1909.03438
Autor:
Hellert, Thorsten, Dohlus, Martin
Publikováno v:
Phys. Rev. Accel. Beams, Vol. 21.042001, 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:
http://arxiv.org/abs/1804.02487
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 11 November 2022 1043
Publikováno v:
Phys. Rev. Accel. Beams, 20.100702, 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:
http://arxiv.org/abs/1710.04862
Autor:
Zagorodnov, Igor, Dohlus, Martin
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 1 September 2021 1009
Autor:
Zagorodnov, Igor, Dohlus, Martin
In this paper we introduce 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 iterative procedure ba
Externí odkaz:
http://arxiv.org/abs/1007.0872
The method of the optical approximation is used to estimate the high frequency impedances of different vacuum chamber transitions of the European XFEL beam line. The approximations of the longitudinal impedances are obtained in terms of simple one-di
Externí odkaz:
http://arxiv.org/abs/1006.0823
Autor:
Geloni, Gianluca, Botman, Jan, van der Wiel, Marnix, Dohlus, Martin, Saldin, Evgeni, Schneidmiller, Evgeni, Yurkov, Mikhail
Transverse self-interactions within a "line" bunch of electrons moving in an arc of a circle have been studied extensively by us from an electrodynamical viewpoint. Here we treat an electron bunch with a given vertical (i.e. perpendicular to the orbi
Externí odkaz:
http://arxiv.org/abs/physics/0304033