title: Investigation of effect of solenoid magnet on emittances of ion beam from laser ablation plasma.
abstract: A magnetic field can increase an ion current of a laser ablation plasma and is expected to control the change of the plasma ion current. However, the magnetic field can also make some fluctuations of the plasma and the effect on the beam emittance and the emission surface is not clear. To investigate the effect of a magnetic field, we extracted the ion beams under three conditions where without magnetic field, with magnetic field, and without magnetic field with higher laser energy to measure the beam distribution in phase space. Then we compared the relations between the plasma ion current density into the extraction gap and the Twiss parameters with each condition. We observed the effect of the magnetic field on the emission surface.
authors.affiliation: Tokyo Institute of Technology, Yokohama, Kanagawa, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Ikeda
authors.affiliation: Cornell University, Ithaca, New York 14850, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Romanelli
authors.affiliation: University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: David
authors.initials: D
authors.lastname: Cinquegrani
authors.affiliation: Tokyo Institute of Technology, Yokohama, Kanagawa, Japan.
authors.forename: Megumi
authors.initials: M
authors.lastname: Sekine
authors.affiliation: Waseda University, Shinjuku, Tokyo, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Kumaki
authors.affiliation: Kyoto University, Uji, Kyoto, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Fuwa
authors.affiliation: Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kanesue
authors.affiliation: Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Okamura
authors.affiliation: Tokyo Institute of Technology, Yokohama, Kanagawa, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Horioka