title: Antimatter plasmas in a multipole trap for antihydrogen.
abstract: We have demonstrated storage of plasmas of the charged constituents of the antihydrogen atom, antiprotons and positrons, in a Penning trap surrounded by a minimum-B magnetic trap designed for holding neutral antiatoms. The neutral trap comprises a superconducting octupole and two superconducting, solenoidal mirror coils. We have measured the storage lifetimes of antiproton and positron plasmas in the combined Penning-neutral trap, and compared these to lifetimes without the neutral trap fields. The magnetic well depth was 0.6 T, deep enough to trap ground state antihydrogen atoms of up to about 0.4 K in temperature. We have demonstrated that both particle species can be stored for times long enough to permit antihydrogen production and trapping studies.
authors.affiliation: Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.
authors.forename: G
authors.initials: G
authors.lastname: Andresen
authors.forename: W
authors.initials: W
authors.lastname: Bertsche
authors.forename: A
authors.initials: A
authors.lastname: Boston
authors.forename: P D
authors.initials: PD
authors.lastname: Bowe
authors.forename: C L
authors.initials: CL
authors.lastname: Cesar
authors.forename: S
authors.initials: S
authors.lastname: Chapman
authors.forename: M
authors.initials: M
authors.lastname: Charlton
authors.forename: M
authors.initials: M
authors.lastname: Chartier
authors.forename: A
authors.initials: A
authors.lastname: Deutsch
authors.forename: J
authors.initials: J
authors.lastname: Fajans
authors.forename: M C
authors.initials: MC
authors.lastname: Fujiwara
authors.forename: R
authors.initials: R
authors.lastname: Funakoshi
authors.forename: D R
authors.initials: DR
authors.lastname: Gill
authors.forename: K
authors.initials: K
authors.lastname: Gomberoff
authors.forename: J S
authors.initials: JS
authors.lastname: Hangst
authors.forename: R S
authors.initials: RS
authors.lastname: Hayano
authors.forename: R
authors.initials: R
authors.lastname: Hydomako
authors.forename: M J
authors.initials: MJ
authors.lastname: Jenkins
authors.forename: L V
authors.initials: LV
authors.lastname: Jørgensen
authors.forename: L
authors.initials: L
authors.lastname: Kurchaninov
authors.forename: N
authors.initials: N
authors.lastname: Madsen
authors.forename: P
authors.initials: P
authors.lastname: Nolan
authors.forename: K
authors.initials: K
authors.lastname: Olchanski
authors.forename: A
authors.initials: A
authors.lastname: Olin
authors.forename: A
authors.initials: A
authors.lastname: Povilus
authors.forename: F
authors.initials: F
authors.lastname: Robicheaux
authors.forename: E
authors.initials: E
authors.lastname: Sarid
authors.forename: D M
authors.initials: DM
authors.lastname: Silveira
authors.forename: J W
authors.initials: JW
authors.lastname: Storey
authors.forename: H H
authors.initials: HH
authors.lastname: Telle
authors.forename: R I
authors.initials: RI
authors.lastname: Thompson
authors.forename: D P
authors.initials: DP
authors.lastname: van der Werf
authors.forename: J S
authors.initials: JS
authors.lastname: Wurtele
authors.forename: Y
authors.initials: Y
authors.lastname: Yamazaki