Stuttgart 2012 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 2: Precision Mass Spectrometry and Fundamental Applications I

MS 2.5: Vortrag

Montag, 12. März 2012, 15:15–15:30, V57.06

On-line commissioning of the cryogenic stopping cell for the Super-FRS — •Sivaji Purushothaman¹, Peter Dendooven², Timo Dickel^1,3, Jens Ebert³, Alfredo Estrade¹, Fabio Farinon¹, Hans Geissel^1,3, Emma Haettner^1,3, Christian Jesch³, Nasser Kalantar-Nayestanaki², Ronja Knoebel^1,3, Jan Kurcewicz¹, Johannes Lang¹, Iain Moore⁴, Chiara Nociforo¹, Stephane Pietri¹, Wolfgang Plass^1,3, Andrey Prochazka¹, Manisha Ranjan², Moritz Pascal Reiter¹, Sami Rinta-Antila⁴, Christoph Scheidenberger^1,3, Maya Takechi¹, John Winfield¹, and Helmut Weick¹ — ¹GSI, Darmstadt, Germany — ²KVI, University of Groningen, Netherlands — ³JLU, Giesen, Germany — ⁴University of Jyväskylä, Finland

A cryogenic stopping cell developed for the low-energy branch of the Super-FRS at FAIR has been successfully commissioned in combination with a multiple-reflection time-of-flight mass spectrometer at the FRS at GSI. The stopping cell has a stopping length of 1 m and is operated at 100 mbar helium at 100 K. The helium density used in this test is several times higher than the gas densities achieved in comparable room temperature stopping cells. In-flight separated and range-focussed ²²³Th fragments from the FRS have been slowed down, thermalized and extracted. Results of this test and the plans for future experiments will be discussed