Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 52: Precision spectroscopy of atoms and ions III
Q 52.2: Talk
Thursday, March 15, 2012, 14:15–14:30, V47.03
Status of the HITRAP cooler Penning trap. — •Svetlana Fedotova1, Elizabeth Boulton1, Klaas Brantjes1, Frank Herfurth1, Nikita Kotovskiy1, Claude Krantz2, Denis Neidherr1, Wolfgang Quint1, and Jochen Steinmann1 — 1GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt — 2Heidelberg University
The HITRAP cooler Penning trap will be used for cooling and storing of bunches of up to 105 ions as heavy as U92+. Using both electron cooling and resistive cooling will allow cooling down ions from temperature of 6keV/u to a value below 1meV. Bunches of 1010 electrons can be injected into the trap from an electron source installed downstream. The electrostatic potentials of the trap electrodes will be arranged to form a nested trap in order to allow capture both, ions and electrons, simultaneously inside the trap. The sequence of the different processes: electron injection, ion capture in flight, electron cooling, resistive cooling and controlled ejection requires a sophisticated control system. Recent injection tests with ions and electrons showed the necessity of electrical and magnetic field alignment. A test ion source together with a system of apertures and imaging detectors will be used to align the fields.