title: Plasma ignition and steady state simulations of the Linac4 H(-) ion source.
abstract: The RF heating of the plasma in the Linac4 H(-) ion source has been simulated using a particle-in-cell Monte Carlo collision method. This model is applied to investigate the plasma formation starting from an initial low electron density of 10(12) m(-3) and its stabilization at 10(18) m(-3). The plasma discharge at low electron density is driven by the capacitive coupling with the electric field generated by the antenna, and as the electron density increases the capacitive electric field is shielded by the plasma and induction drives the plasma heating process. Plasma properties such as e(-)/ion densities and energies, sheath formation, and shielding effect are presented and provide insight to the plasma properties of the hydrogen plasma.
authors.affiliation: CERN, 1211 Geneva 23, Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Mattei
authors.affiliation: Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama 223-8522, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ohta
authors.affiliation: Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama 223-8522, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yasumoto
authors.affiliation: Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama 223-8522, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Hatayama
authors.affiliation: CERN, 1211 Geneva 23, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Lettry
authors.affiliation: CERN, 1211 Geneva 23, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Grudiev