Dr.-Ing. Thomas Flisgen
Ehemaliger Mitarbeiter
Research Interests
- Numerical simulation of electromagnetic phenomena
- Fast space-charge calculations for bunches of charged particles by means of nonequispaced fast fourier transform (NFFT)
- Measurement and simulation of scattering parameters of superconducting accelerator structures
- Measurement and simulation of beam-excited fields in superconducting accelerator structures
- Large-scale simulations of radio frequency components for particle accelerators
Teaching Activities
- Seminar Hands-on Introduction to Computational Electromagnetism
- Exercise Computational Electromagnetism
- Exercise Numerical Linear Algebra
Publications
- T. Flisgen, H.-W. Glock, P. Zhang, I. R. R. Shinton, N. Baboi, R. M. Jones, and U. van Rienen. Scattering parameters of the 3.9 GHz accelerating module in a free-electron laser linac: A rigorous comparison between simulations and measurements. Phys. Rev. ST Accel. Beams, 17:022003, February 2014.
- J. Heller, T. Flisgen, and U. van Rienen. Computation of wakefields and HOM port signals by means of reduced order models. In Proceedings of the 16th International Conference on RF Superconductivity 2013 (SRF 2013), pages 361 - 363, Paris, France, 2013.
- T. Flisgen and U. van Rienen. A Modal Absorbing Boundary Condition based on Time-Invariant State Space Models. In Proceedings of the Workshop on Advances in Electromagnetic Research, page 25, Riezlern (Kleinwalsertal), Austria, 2013.
- T. Flisgen, H.-W. Glock, and U. van Rienen. Compact Time-Domain Models of Complex RF Structures Based on the Real Eigenmodes of Segments. IEEE Transactions on Microwave Theory and Techniques, 61(6), June 2013.
- T. Flisgen and U. van Rienen. Time domain models for lossless multiport waveguide structures in impedance and admittance formulation based on real eigenmodes. In Proceedings of the 8th Conference on Scientific Computing in Electrical Engineering 2012 (SCEE 2012), pages 153 - 154, Zurich, Switzerland, 2012.
- T. Flisgen, J. Heller, and U. van Rienen. Lumped equivalent models of complex RF structures. In Proceedings of the 11th International Computational Accelerator Physics Conference 2012 (ICAP 2012), pages 245 – 249, Warnemünde, Germany, 2012.
- T. Galek, T. Flisgen, U. van Rienen, B. Riemann, and A. Neumann. Traveling poles elimination scheme and calculations of external quality factors of HOMs in SC cavities. In Proceedings of the 11th International Computational Accelerator Physics Conference 2012 (ICAP 2012), pages 152 - 154, Warnemünde, Germany, 2012.
- A. Neumann, W. Anders, J. Knobloch, B. Riemann, T. Weis, K. Brackebusch, T. Flisgen, T. Galek, K. Papke, and U. van Rienen. Status of the HOM calculations for the BERLIN-Pro main linac cavity. In Proceedings of the 11th International Computational Accelerator Physics Conference 2012 (ICAP 2012), pages 278 - 280, Warnemünde, Germany, 2012.
- T. Flisgen, H.-W. Glock, and U. van Rienen. A concatenation scheme for the computation of beam excited higher order mode port signals. In Proceedings of the 2nd International Particle Accelerator Conference 2011 (IPAC 2011), pages 2238 - 2240, San Sebastian, Spain, 2011.
- T. Flisgen, H.-W. Glock, and U. van Rienen. A coupling formalism for the computation of beam excited HOM port signals. In Proceedings of the Workshop on Advances in Electromagnetic Research, page 44, Riezlern (Kleinwalsertal), Austria, 2011.
- N. Baboi, N. Eddy, T. Flisgen, H.-W. Glock, R. M. Jones, I. R. R. Shinton, and P. Zhang. Higher order modes for beam diagnostics in third harmonic 3.9 GHz accelerating modules. In Proceedings of the 15th International Conference on RF Superconductivity 2011 (SRF 2011), pages 239 - 243, Chicago, IL, USA, 2011.
- P. Zhang, R. M. Jones, I. R. R. Shinton, N. Baboi, B. Lorbeer, P. Zhang, H. Ecklebe, T. Flisgen, and H.-W. Glock. Beam-based HOM study in third harmonic SC cavities for beam alignment at FLASH. In Proceedings of the 10th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators (DIPAC 2011), pages 77 - 79, Hamburg, Germany, 2011.
- H.-W. Glock, H. Ecklebe, T. Flisgen, N. Baboi, and P. Zhang. Diode down-mixing of HOM coupler signals for beam position determination in 1.3 GHz and 3.9 GHz cavities at FLASH. In Proceedings of the 10th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators (DIPAC 2011), pages 101 - 103, Hamburg, Germany, 2011.
- T. Flisgen, H.-W. Glock, and U. van Rienen. Simulation and measurement of scattering parameters for FLASH's ACC39 module. In Proceedings of the Workshop on Advances in Electromagnetic Research, page 34, Waren, Germany, 2010.
- P. Zhang, N. Baboi, T. Flisgen, H.-W. Glock, R. M. Jones, B. Lorbeer, U. van Rienen, and I. R. R. Shinton. First beam spectra of SC third harmonic cavity at FLASH. In Proceedings of the 25th Linear Accelerator Conference 2010 (LINAC 2010), pages 782 - 782, Tsukuba, Japan, 2010.
- I. R. R. Shinton, N. Baboi, N. Eddy, T. Flisgen, H.-W. Glock, R. M. Jones, N. Juntong, T. N. Khabiboulline, U. van Rienen, and P. Zhang. Higher order modes in third harmonic cavities at FLASH. In Proceedings of the 25th Linear Accelerator Conference 2010 (LINAC 2010), pages 785 - 787, Tsukuba, Japan, 2010.
- I. R. R. Shinton, N. Baboi, N. Eddy, T. Flisgen, H.-W. Glock, R. M. Jones, N. Juntong, T. N. Khabiboulline, U. van Rienen, and P. Zhang. Higher order modes in third harmonic cavities at XFEL/FLASH. In Proceedings of the 1st International Particle Accelerator Conference 2010 (IPAC 2010), pages 3007 - 3009, Kyoto, Japan, 2010.
- T. Flisgen, G. Pöplau, and U. van Rienen. A fast point to point interaction model for charged particle bunches by means of nonequispaced fast fourier transform (NFFT). In Proceedings of the 10th International Computational Accelerator Physics Conference 2009 (ICAP 2009), pages 273 - 276, San Francisco, USA, 2009.