scholarly journals Statistical methods for transverse beam position diagnostics with higher order modes in third harmonic 3.9GHz superconducting accelerating cavities at FLASH

2014 ◽  
Vol 734 ◽  
pp. 84-94 ◽  
Author(s):  
Pei Zhang ◽  
Nicoleta Baboi ◽  
Roger M. Jones
Keyword(s):  
Statistical Methods ◽  
Higher Order ◽  
Transverse Beam ◽  
Beam Position ◽  
Third Harmonic ◽  
Higher Order Modes ◽  
Accelerating Cavities

RF measurements and control of higher order modes in accelerating cavities

2002 ◽  
Author(s):  
V. Veshcherevich ◽  
S. Krutikhin ◽  
I. Kuptsov ◽  
S. Nosyrev ◽  
A. Novikov ◽  
...  
Keyword(s):  
Higher Order ◽  
Higher Order Modes ◽  
Accelerating Cavities ◽  
And Control ◽  
Rf Measurements

Correction of coupled higher-order modes in the S-parameter characterization of wideband cavity beam position monitors

2021 ◽  
Vol 92 (1) ◽  
pp. 014705
Author(s):  
Liu Yang ◽  
Xiaozhong He ◽  
Ruo Tang ◽  
Quanhong Long ◽  
Linwen Zhang
Keyword(s):  
Higher Order ◽  
Beam Position ◽  
Higher Order Modes ◽  
S Parameter ◽  
Beam Position Monitors

scholarly journals Observation of Polarization-Dependent Changes in Higher Order Mode Responses as a Function of Transverse Beam Position in TESLA-Type Cavities at FAST

2021 ◽  
Author(s):  
Randy Thurman-Keup ◽  
Dean Edstrom ◽  
Alex Lumpkin ◽  
Peter Prieto ◽  
Jinhao Ruan ◽  
...  
Keyword(s):  
Higher Order ◽  
Order Mode ◽  
Transverse Beam ◽  
Beam Position ◽  
Higher Order Mode

scholarly journals A study of beam position diagnostics using beam-excited dipole modes in third harmonic superconducting accelerating cavities at a free-electron laser

2012 ◽  
Vol 83 (8) ◽  
pp. 085117 ◽  
Author(s):  
Pei Zhang ◽  
Nicoleta Baboi ◽  
Roger M. Jones ◽  
Ian R. R. Shinton ◽  
Thomas Flisgen ◽  
...  
Keyword(s):  
Free Electron ◽  
Free Electron Laser ◽  
Beam Position ◽  
Third Harmonic ◽  
Accelerating Cavities

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.

Sign in / Sign up

Export Citation Format

Share Document