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Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 69: Instrumentation

HK 69.6: Vortrag

Donnerstag, 7. März 2013, 15:30–15:45, WIL-A221

Status of the Intrap project at MLLTRAP — •Peter Müller, Jasmin Moazzami-Fallah, Jurek Szerypo, Peter G. Thirolf, and Christine Weber — Fakultät für Physik, LMU München, 85748 Garching

The precision of decay-spectroscopy experiments is limited due to scattering effects in the source material. However, well-localized ions in a Penning trap can be considered as an ideal, carrier-free source. In order to investigate alpha- and conversion-electron decays, a novel type of "Detector-Trap" is presently under construction at the Garching double Penning-trap facility MLLTRAP for the future MATS facility at FAIR. Here, the trap’s ring electrode is replaced by a cubic detector array, also providing the trapping potential. It consists of four position-sensitive silicon strip detectors, which allow for a measurement of energy spectra and enable a determination of the decay axis of stored alpha-emitters. Moreover, low-energetic electrons from conversion decays are efficiently guided along the magnetic field lines and detected in the fringe field region of the trap’s superconducting magnet. For this purpose, alpha- and electron detectors are presently developed, and extensively characterized under the future ambient conditions given in the MATS experimental setups. This presentation reports on the physics goals of future experiments and gives an overview on the present status of the developments.

[*] Supported by BMBF (06ML9148, 05P12WMFNE), DFG (HA 1101/14-1), and MLL.

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