title: Ion source research and development at University of Jyväskylä: Studies of different plasma processes and towards the higher beam intensities.
abstract: Several ion source related research and development projects are in progress at the Department of Physics, University of Jyväskylä (JYFL). The work can be divided into investigation of the ion source plasma and development of ion sources, ion beams, and diagnostics. The investigation covers the Electron Cyclotron Resonance Ion Source (ECRIS) plasma instabilities, vacuum ultraviolet (VUV) and visible light emission, photon induced electron emission, and the development of plasma diagnostics. The ion source development covers the work performed for radiofrequency-driven negative ion source, RADIS, beam line upgrade of the JYFL 14 GHz ECRIS, and the development of a new room-temperature-magnet 18 GHz ECRIS, HIISI.
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Koivisto
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Kalvas
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: O
authors.initials: O
authors.lastname: Tarvainen
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Komppula
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Laulainen
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: R
authors.initials: R
authors.lastname: Kronholm
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: K
authors.initials: K
authors.lastname: Ranttila
authors.affiliation: Department of Physics, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 Jyväskylä, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Tuunanen
authors.affiliation: LPSC, CNRS/IN2P3, Université Grenoble-Alpes1, 53 Rue des Martyrs, 38026 Grenoble Cedex, France.
authors.forename: T
authors.initials: T
authors.lastname: Thuillier
authors.affiliation: Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, USA.
authors.forename: D
authors.initials: D
authors.lastname: Xie
authors.affiliation: National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
authors.forename: G
authors.initials: G
authors.lastname: Machicoane