title: Arc plasma generator of atomic driver for steady-state negative ion source.
abstract: The paper reviews the results of development of steady-state arc-discharge plasma generator with directly heated LaB6 cathode. This arc-discharge plasma generator produces a plasma jet which is to be converted into an atomic one after recombination on a metallic plate. The plate is electrically biased relative to the plasma in order to control the atom energies. Such an intensive jet of hydrogen atoms can be used in negative ion sources for effective production of negative ions on a cesiated surface of plasma grid. All elements of the plasma generator have an augmented water cooling to operate in long pulse mode or in steady state. The thermo-mechanical stresses and deformations of the most critical elements of the plasma generator were determined by simulations. Magnetic field inside the discharge chamber was optimized to reduce the local power loads. The first tests of the steady-state arc plasma generator prototype have performed in long-pulse mode.
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Ivanov
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: Yu I
authors.initials: YI
authors.lastname: Belchenko
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: V I
authors.initials: VI
authors.lastname: Davydenko
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: I A
authors.initials: IA
authors.lastname: Ivanov
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Kolmogorov
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Listopad
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Mishagin
authors.affiliation: Tri Alpha Energy Inc., Rancho Santa Margarita, California 92688, USA.
authors.forename: S V
authors.initials: SV
authors.lastname: Putvinsky
authors.affiliation: Budker Institute of Nuclear Physics, Novosibirsk, Russia.
authors.forename: G I
authors.initials: GI
authors.lastname: Shulzhenko
authors.affiliation: Tri Alpha Energy Inc., Rancho Santa Margarita, California 92688, USA.
authors.forename: A
authors.initials: A
authors.lastname: Smirnov