title: Positron plasma diagnostics and temperature control for antihydrogen production.
abstract: Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the plasma density and temperature. We discuss nondestructive measurements, based on a novel, real-time analysis of excited, low-order plasma modes, that provide comprehensive characterization of the positron plasma in the ATHENA antihydrogen apparatus. The plasma length, radius, density, and total particle number are obtained. Measurement and control of plasma temperature variations, and the application to antihydrogen production experiments are discussed.
authors.affiliation: Istituto Nazionale di Fisica Nucleare, Sezione di Genova, 16146 Genova, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Amoretti
authors.forename: C
authors.initials: C
authors.lastname: Amsler
authors.forename: G
authors.initials: G
authors.lastname: Bonomi
authors.forename: A
authors.initials: A
authors.lastname: Bouchta
authors.forename: P D
authors.initials: PD
authors.lastname: Bowe
authors.forename: C
authors.initials: C
authors.lastname: Carraro
authors.forename: C L
authors.initials: CL
authors.lastname: Cesar
authors.forename: M
authors.initials: M
authors.lastname: Charlton
authors.forename: M
authors.initials: M
authors.lastname: Doser
authors.forename: V
authors.initials: V
authors.lastname: Filippini
authors.forename: A
authors.initials: A
authors.lastname: Fontana
authors.forename: M C
authors.initials: MC
authors.lastname: Fujiwara
authors.forename: R
authors.initials: R
authors.lastname: Funakoshi
authors.forename: P
authors.initials: P
authors.lastname: Genova
authors.forename: J S
authors.initials: JS
authors.lastname: Hangst
authors.forename: R S
authors.initials: RS
authors.lastname: Hayano
authors.forename: L V
authors.initials: LV
authors.lastname: Jørgensen
authors.forename: V
authors.initials: V
authors.lastname: Lagomarsino
authors.forename: R
authors.initials: R
authors.lastname: Landua
authors.forename: D
authors.initials: D
authors.lastname: Lindelöf
authors.forename: E Lodi
authors.initials: EL
authors.lastname: Rizzini
authors.forename: M
authors.initials: M
authors.lastname: Macrí
authors.forename: N
authors.initials: N
authors.lastname: Madsen
authors.forename: G
authors.initials: G
authors.lastname: Manuzio
authors.forename: P
authors.initials: P
authors.lastname: Montagna
authors.forename: H
authors.initials: H
authors.lastname: Pruys
authors.forename: C
authors.initials: C
authors.lastname: Regenfus
authors.forename: A
authors.initials: A
authors.lastname: Rotondi
authors.forename: G
authors.initials: G
authors.lastname: Testera
authors.forename: A
authors.initials: A
authors.lastname: Variola
authors.forename: D P
authors.initials: DP
authors.lastname: van der Werf