24th International Workshop on ECR Ion Sources (ECRIS'20)

Electron Cyclotron Resonance Ion Source Related Research and Development Work at the Department of Physics, University of Jyväskylä (JYFL)

29 Sept 2020, 15:30

10m

Poster

Speaker

Miha Marttinen (University of Jyväskylä, Department of Physics)

Description

Recent research work of the JYFL ion source team
covers multi-diagnostic studies of plasma instabilities,
high-resolution plasma optical emission spectroscopy,
ion current transient measurements to define the
total life-time of a particle in the highly charged
plasma. The JYFL team also elaborates the magnetic
and technical design of the unconventional ion source
named CUBE. The R&D work includes, in addition, the
commissioning and operation of the highperformance
18 GHz ECRIS, HIISI. The instability
measurements have revealed new information about
the parameters affecting the onset of the plasma
instabilities and shown that different instability modes
exist. The ion-beam transient studies have given
information about the cumulative life-time of highlycharged
ions convergent with the ion temperatures
deduced from the Doppler broadening of emission
lines. The CUBE prototype has a minimum-B
quadrupole magnetic field topology, similar to ARCECRIS,
and its all-permanent magnet structure has
been optimized for 10 GHz frequency. The CUBE
design will be presented along with its commissioning
status. The status and operational experience with
HIISI will be reported as well.