ICFA Mini Workshop on High Order Modes in Superconducting Cavities 2016

Session

Numerical Simulations for SRF Cavities

22 Aug 2016, 13:10

Konferenzsaal A (Warnemünde)

55. Electromagnetic Modeling and Eigenfield Analysis of Superconducting Cavities

Wolfgang Ackermann (TU Darmstadt)

22/08/2016, 13:10

Superconducting cavities are used in particle accelerator machines to efficiently accelerate charged particles up to the desired energy. To characterize the resonator with respect to the interaction to moving particles the well-known concept of narrow-band impedances is used. A suitable method to determine the desired impedance is given by a proper eigenmode calculation of the given structure...

56. Characterisation of HOMs Using GSM Method in Third Harmonic Accelerating Module of E-XFEL

Nirav Joshi (Cockcroft Institute, The University of Manchester)

22/08/2016, 13:40

61. Generation of a Compendium of Resonant Modes in the Chain of Third Harmonic TESLA Cavities for the European XFEL

Thomas Flisgen (University of Rostock)

22/08/2016, 14:10

57. Application of State-Space Concatenation Scheme to Chains of SRF Cavities

Tomasz Galek (Uni Rostock)

22/08/2016, 15:10

Superconducting radio frequency (SRF) cavities used for accelerating charged particle beams are commonly used in accelerator facilities around the world. The design and optimization of modern SRF cavities requires intensive numerical simulations. Vast number of operational parameters must be calculated to ensure appropriate functioning of the accelerating structures.
The increased demand for...

77. Study on HOM Damping Effects in SRF Cavities of the BESSY VSR Project

Andranik Tsakanian (Helmholtz-Zentrum Berlin )

22/08/2016, 15:40

The BESSY VSR project is a future upgrade of the 3th generation BESSY II light source. The key feature of the project is the simultaneous storage of long (ca. 15 ps) and short (ca. 1.7 ps) electron bunches under “standard” user optics. This challenging goal requires the installation
of SRF higher harmonic cavities of the fundamental 500MHz at two different frequencies.

Therefore four new SRF...

58. Direct time-domain computation of wake fields at third harmonic module of the European XFEL

Igor Zagorodnov (DESY)

22/08/2016, 16:10

In this report we estimate the long- and the short-range wake functions at the third harmonic module of the European XFEL. The estimations are based on direct time-domain calculations with code ECHO. We use rotationally symmetric approximation of the geometry (without RF couplers). The complete cryomodule with 8 cavities including steps and bellows is considered.