Measurements of higher order modes in 3rd harmonic RF cavity at Fermilab

2002 ◽  
Author(s):  
C.M. Bhat
Keyword(s):  
Higher Order ◽  
Rf Cavity ◽  
Higher Order Modes

scholarly journals The Higher Order Modes Calculation of RF Cavity with Cylindrical Symmetry

1983 ◽  
Vol 30 (4) ◽  
pp. 3627-3629 ◽  
Author(s):  
Wen Zhou ◽  
Chu Xuanwen ◽  
Zhou Mingda
Keyword(s):  
Cylindrical Symmetry ◽  
Higher Order ◽  
Rf Cavity ◽  
Higher Order Modes

The Higher Order Modes Calculation of RF Cavity with Finite Element Method

1985 ◽  
Vol 32 (5) ◽  
pp. 2983-2985
Author(s):  
X. W. Chu ◽  
W. Zhou ◽  
F. Xiang ◽  
H. Zhuang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Higher Order ◽  
Rf Cavity ◽  
Higher Order Modes ◽  
Element Method

scholarly journals Electron bunch train excited higher-order modes in a superconducting RF cavity

2017 ◽  
Vol 41 (4) ◽  
pp. 047002
Author(s):  
Yong-Feng Gao ◽  
Sen-Lin Huang ◽  
Fang Wang ◽  
Li-Wen Feng ◽  
De-Hao Zhuang ◽  
...  
Keyword(s):  
Electron Bunch ◽  
Higher Order ◽  
Rf Cavity ◽  
Higher Order Modes ◽  
Superconducting Rf

scholarly journals Electrical characterisation of higher order spin wave modes in vortex-based magnetic tunnel junctions

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Alex. S. Jenkins ◽  
Lara San Emeterio Alvarez ◽  
Samh Memshawy ◽  
Paolo Bortolotti ◽  
Vincent Cros ◽  
...  
Keyword(s):  
Spin Wave ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Higher Order ◽  
Spin Torque ◽  
Micromagnetic Simulations ◽  
Higher Order Modes ◽  
Spin Diode ◽  
Super High Frequency ◽  
Wave Modes

AbstractNiFe-based vortex spin-torque nano-oscillators (STNO) have been shown to be rich dynamic systems which can operate as efficient frequency generators and detectors, but with a limitation in frequency determined by the gyrotropic frequency, typically sub-GHz. In this report, we present a detailed analysis of the nature of the higher order spin wave modes which exist in the Super High Frequency range (3–30 GHz). This is achieved via micromagnetic simulations and electrical characterisation in magnetic tunnel junctions, both directly via the spin-diode effect and indirectly via the measurement of the coupling with the gyrotropic critical current. The excitation mechanism and spatial profile of the modes are shown to have a complex dependence on the vortex core position. Additionally, the inter-mode coupling between the fundamental gyrotropic mode and the higher order modes is shown to reduce or enhance the effective damping depending upon the sense of propagation of the confined spin wave.

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