21 citations · 64 across the 7 of their papers we have counts for
7 papers
Effect of Crab cavity HOMs on the coupled-bunch stability of HL-LHC
Sergey Antipov, Nicolo Biancacci, Jani Komppula +2
High frequency High Order Modes can significantly affect the coupled-bunch stability in a circular accelerator. With a large enough shunt impedance they may drive a coupled-bunch t…
VUV irradiance measurement of a 2.45 GHz microwave-driven hydrogen discharge
J. Komppula, O. Tarvainen, T. Kalvas +4
Absolute values of VUV-emission of a 2.45 GHz microwave-driven hydrogen discharge are reported. The measurements were performed with a robust and straightforward method based on a…
Plasma heating power dissipation in low temperature hydrogen plasmas
J. Komppula, O. Tarvainen
Theoretical framework for power dissipation in low temperature plasmas in corona equilibrium is developed. The framework is based on fundamental conservation laws and reaction cros…
Photoelectron Emission from Metal Surfaces Induced by Radiation Emitted by a 14 GHz Electron Cyclotron Resonance Ion Source
Janne Laulainen, Taneli Kalvas, Hannu Koivisto +3
Photoelectron emission measurements have been performed using a room-temperature 14 GHz ECR ion source. It is shown that the photoelectron emission from Al, Cu, and stainless steel…
VUV diagnostic of electron impact processes in low temperature molecular hydrogen plasma
J. Komppula, O. Tarvainen
Novel methods for diagnostics of molecular hydrogen plasma processes, such as ionization, production of high vibrational levels, dissociation of molecules via excitation to singlet…
Photoelectron Emission from Metal Surfaces Induced by VUV-emission of Filament Driven Hydrogen Arc Discharge Plasma
J. Laulainen, T. Kalvas, H. Koivisto +2
Photoelectron emission measurements have been performed using a filament-driven multi-cusp arc discharge volume production H^- ion source (LIISA). It has been found that photoelect…