60 results on '"Thumm, Manfred"'
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2. Novel High-Frequency Electric Field Sweeping Concept for High-Power Gyrotron Collectors
3. Simulation of Parasitic Backward-Wave Excitation in High-Power Gyrotron Cavities
4. Single-and Two-Frequency Sub-THz Waveguide Notch Filters With Rejection Frequencies Within and Beyond the Passband
5. Low Ohmic Losses and Mode Selectivity Provided by a Distributed Bragg Reflector for Cavities of Terahertz Gyrotrons
6. Toward the First Continuous Wave Compatible Multistage Depressed Collector Design for High Power Gyrotrons
7. New Type of Sub-THz Frequency-Doubling Gyro-TWT With Helically Corrugated Circuit
8. Time-Domain Simulation of Helical Gyro-TWTs With Coupled Modes Method and 3-D Particle Beam
9. Design of a High-Q Diamond-Loaded Cavity for a Third-Harmonic Subterahertz Gyrotron Driven by a Low-Power Electron Beam
10. Progress of the Methods for Optimum of Quasi-Optical Mode Converters at KIT
11. European 1 MW, 170 GHz CW Gyrotron Prototype for ITER - long-pulse operation at KIT
12. Improvement of the Output Mode Purity of a Complex-Cavity Resonator for a Frequency-Tunable Sub-THz Gyrotron
13. Large Area Diamond Disk Growth Experiments and Thermomechanical Investigations for the Broadband Brewster Window in DEMO
14. Multifaceted Simulations Reproducing Experimental Results From the 1.5-MW 140-GHz Preprototype Gyrotron for W7-X
15. Generation of 1.5 MW–140 GHz Pulses With the Modular Pre-Prototype Gyrotron for W7-X
16. Extended Feedback System for Coupled Sub-THz Gyro-Devices to Provide New Regimes of Operation
17. High Purity Mode CW Gyrotron Covering the Subterahertz to Terahertz Range Using a 20 T Superconducting Magnet
18. Numerical Studies on the Influence of Cavity Thermal Expansion on the Performance of a High-Power Gyrotron
19. Numerical Investigation on Spent Beam Deceleration Schemes for Depressed Collector of a High-Power Gyrotron
20. Study on After Cavity Interaction in a 140-GHz Model TE0,3Gyrotron Using 3-D CFDTD PIC Simulation
21. CW Experiments With the EU 1-MW, 170-GHz Industrial Prototype Gyrotron for ITER at KIT
22. Tolerance Studies on an Inverse Magnetron Injection Gun for a 2-MW 170-GHz Coaxial-Cavity Gyrotron
23. Study of the Influence of Stray Magnetic Fields on the Operation of the European Gyrotron for ITER
24. Transition Between Beam-Plasma and Beam-Dissipative Instability Regimes in the Interaction of Relativistic Large Larmor Orbit Electron Beams and Azimuthal Surface Waves Above the Upper-Hybrid Frequency in Coaxial Plasma Waveguides
25. Excitation of Electromagnetic Waves Above the Upper-Hybrid Frequency by Internal Gyrating Electron Beam in a Coaxial Waveguide
26. A 220/247.5/275-GHz, 1.0-MW, Triple Frequency Regime Gyrotron
27. A Numerical Synthesis Method for Hybrid-Type High-Power Gyrotron Launchers
28. Evaluation and Influence of Gyrotron Cathode Emission Inhomogeneity
29. Excitation of Azimuthal Surface Waves Above the Upper-Hybrid Frequency by External Relativistic Flows of Electrons in Coaxial Plasma-Vacuum Waveguide
30. Direct Voltage Depression Calculation of Arbitrary Electron Beams in Misaligned Coaxial Gyrotron Cavities
31. An Inverse Magnetron Injection Gun for the KIT 2-MW Coaxial-Cavity Gyrotron
32. Dynamics and Spectral Composition of Subterahertz Emission From Plasma Column Due to Two-Stream Instability of Strong Relativistic Electron Beam
33. Observation of Discrete Frequency Hopping in MW-Class Gyrotrons During Long-Pulse Operation
34. An Improved Broadband Boundary Condition for the RF Field in Gyrotron Interaction Modeling
35. Efficient Frequency Step-Tunable Megawatt-Class$D$ -Band Gyrotron
36. Two Ways for High-Power Generation of Subterahertz Radiation by Usage of Strong Relativistic Electron Beams
37. Study of Dynamic After Cavity Interaction in Gyrotrons—Part II: Influence of a Nonuniform Magnetic Field
38. Output System for a 170-GHz/1.5-MW Continuous Wave Gyrotron Operating in the TE28,12Mode
39. First Operation of a Step-Frequency Tunable 1-MW Gyrotron With a Diamond Brewster Angle Output Window
40. Design of 170 GHz, 1.5-MW Conventional Cavity Gyrotron for Plasma Heating
41. From Series Production of Gyrotrons for W7-X Toward EU-1 MW Gyrotrons for ITER
42. A New Method for Synthesis of Beam-Shaping Mirrors for Off-Axis Incident Gaussian Beams
43. Recent Advances in the Worldwide Fusion Gyrotron Development
44. Transient Millimeter-Wave Signal Analysis With Unambiguous RF Spectrum Reconstruction
45. Design and 3-D Simulations of a 10-kW/28-GHz Gyrotron With a Segmented Emitter Based on Controlled Porosity-Reservoir Cathodes
46. Vector Method for Synthesis of Adapted Phase-Correcting Mirrors for Gyrotron Output Couplers
47. Reflection of ${\rm TE}_{0{n}}$ Modes at Open-Ended Oversized Circular Waveguide
48. Measurement of Complex Permittivity of Cylindrical Objects in the E-Plane of a Rectangular Waveguide
49. Progress on Gyrotrons for ITER and Future Thermonuclear Fusion Reactors
50. Experimental Investigations and Analysis of Parasitic RF Oscillations in High-Power Gyrotrons
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