Heidelberg 2015 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 2: Precision Mass Spectrometry 2

MS 2.2: Vortrag

Montag, 23. März 2015, 15:00–15:15, PH/HS2

Status of the high-precision Penning-trap mass spectrometer Pentatrap — •Alexander Rischka¹, Hendrik Bekker¹, Klaus Blaum¹, Christine Böhm^1,2, José R. López-Urrutia¹, Andreas Dörr¹, Sergey Eliseev¹, Mikhail Goncharov¹, Yuri N. Novikov³, Rima Schüssler^1,4, Sven Sturm¹, and Stefan Ulmer⁵ — ¹Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — ²ExtreMe Matter Institute EMMI, Helmholtz Gemeinschaft, 64291 Darmstadt, Germany — ³Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia — ⁴Universität Heidelberg, Fakultät für Physik und Astronomie, 69120 Heidelberg, Germany — ⁵RIKEN, Ulmer Initiative Research Unit, Japan

The Penning-trap mass spectrometer PENTATRAP is currently in the commissioning phase at the Max-Planck-Institute for Nuclear Physics in Heidelberg. We are aiming at measurements of mass ratios of highly charged ions with a relative uncertainty of 10⁻¹¹ and better, e.g. to probe, with the measurement of the Q-value of ¹⁶³Ho/¹⁶³Dy, the electron neutrino mass. In the first commissioning campaign we demonstrated the transport of the ions from the electron beam ion source to the trap. We succeeded as well in trapping a single ⁴⁰Ar⁸⁺ ion where trapping times up to 30 min were achieved. To improve the trapping time even further and thus, to achieve a full characterization of the trap and start first precision measurements, a major revision of the cryogenic setup is presently prepared. This includes a new detection and trap alignment system.