title: Experimental proof of adjustable single-knob ion beam emittance partitioning.
abstract: The performance of accelerators profits from phase-space tailoring by coupling of degrees of freedom. Previously applied techniques swap the emittances among the three degrees but the set of available emittances is fixed. In contrast to these emittance exchange scenarios, the emittance transfer scenario presented here allows for arbitrarily changing the set of emittances as long as the product of the emittances is preserved. This Letter is the first experimental demonstration of transverse emittance transfer along an ion beam line. The amount of transfer is chosen by setting just one single magnetic field value. The envelope functions (beta) and slopes (alpha) of the finally uncorrelated and repartitioned beam at the exit of the transfer line do not depend on the amount of transfer.
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Groening
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Maier
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Xiao
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Dahl
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Gerhard
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: O K
authors.initials: OK
authors.lastname: Kester
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Mickat
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Vormann
authors.affiliation: GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt D-64291, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Vossberg
authors.affiliation: Ulsan National Institute of Science and Technology, Ulsan 698-798, Republic of Korea.
authors.forename: M
authors.initials: M
authors.lastname: Chung