Hamburg 2009 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 13: Atomic Systems in External Fields II
A 13.2: Fachvortrag
Dienstag, 3. März 2009, 17:00–17:30, VMP 6 HS-B
Commissioning of the HITRAP Decelerator using a Single-shot Pepper Pot Emittance Meter: A Status Report — •Jochen Pfister1,2, Winfried Barth2, Ludwig Dahl2, Peter Forck2, Frank Herfurth2, Oliver Kester3, and Ulrich Ratzinger1 — 1Goethe Universität Frankfurt, Institut für Angewandte Physik, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany — 3NSCL, Michigan State University, 1 Cyclotron, East Lansing, MI 48824, USA
The Heavy Ion TRAP (HITRAP) project at GSI is in the commissioning phase. Highly charged ions up to U92+ provided by the GSI accelerator facility will be decelerated and injected into a large Penning trap for cooling to the meV/u energy level. A combination of an inversely operated IH- and a RFQ-structure combination decelerates the ions from 4MeV/u down to 6keV/u. In front of the decelerator a double drift-buncher-system is provided for phase focusing and a final de-buncher integrated in the RFQ-tank reduces the energy spread in order to improve the efficiency for beam capture in the cooler trap. This contribution concentrates on the beam dynamics simulations and corresponding measurements in the commissioning beam times for bunchers and IH structure. Single-shot emittance measurements, profile measurements as well as longitudinal bunch structure measurements are presented. Especially for low energy, low intensity beams a new single-shot emittance meter using Micro Channel Plate technology is under construction and will be discussed as well.