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HK: Fachverband Physik der Hadronen und Kerne

HK 81: Instrumentation

HK 81.4: Vortrag

Donnerstag, 7. März 2013, 17:45–18:00, WIL-A221

On-line coupling of the TRIGA-SPEC facility at the research reactor TRIGA Mainz — •Dennis Renisch — Institut für Kernchemie, Johannes Gutenberg-Universität, Mainz, Germany

To determine ground-state properties of exotic nuclides, the TRIGA-SPEC experiment at the TRIGA Mainz research reactor was recently installed. It includes the Penning-trap mass spectrometer TRIGA-TRAP and the collinear laser spectroscopy setup TRIGA-LASER. Nuclides of interest are produced via neutron-induced fission of suitable actinoide isotopes, thermalized in a gas-filled volume and transported with a gas-jet system to an on-line ion source. Ionization of the fission products occurs inside a hot cavity of the ion source, which is heated by electron bombardment to temperatures of about 2000°C. The ion beam is extracted by a high potential difference and mass separated by a 90° dipole magnet. Afterwards, the ion beam is injected into an RF-cooler/buncher and finally decelerated by a pulsed drift tube so that the ions can be captured in a Penning trap. The efficiencies of the different parts of the beamline were tested recently and the latest results about the performance will be presented.