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HK: Physik der Hadronen und Kerne

HK 21: Postersitzung

HK 21.58: Poster

Dienstag, 21. März 2006, 15:30–17:00, P

MLLTRAP: Penning trap for mass measurements of radioactive ions at MLL* — •V.S. Kolhinen, M. Bussmann, D. Habs, J. Neumayr, U. Schramm, M. Sewtz, J. Szerypo, and P. Thirolf — Department für Physik, Ludwig-Maximilians-Universität München, D-85748 Garching

A Penning trap system, MLLTRAP, is now in its construction and commissioning phase at the MLL in Garching. In the first phase we will set up the system off-line and test it with stable Cs ions during spring and summer 2006. For on-line measurements at the Tandem accelerator reaction products will be thermalized in a buffer gas stopping cell and transfered to the trap via an RFQ cooler buncher.

Later it is planned to use highly charged ions. The ions will be charge-bred in an EBIS to obtain higher cyclotron frequencies and thus an improved mass accuracy, finally aiming at δ m /m ≤ 10⁻⁸. The highly charged ions will be sympathetically cooled with Mg⁺ ions before being injected into the measurement traps.

The final goal of the project is to investigate medium-mass and heavy neutron-rich isotopes from both fission and fusion reactions. As main experiments with precision mass measurements in-trap e- or α-spectroscopy are foreseen.

This poster will present the present status of the project.

[*] This work was supported by EU(NIPNET) under contract HPRI-CT-2001-50034