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Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 44: Precision spectroscopy of atoms and ions (with A)

Q 44.4: Poster

Wednesday, March 2, 2016, 16:30–19:00, Empore Lichthof

The new CRYRING facility at GSI / FAIR and experiments with optical ion polarization — •Zoran Andelkovic1, Wolfgang Geithner1, Frank Herfurth1, Michael Lestinsky1, Wilfried Nörtershäuser2, and Gleb Vorobyev11GSI Darmstadt — 2TU Darmstadt

The CRYRING storage ring, the Swedish in-kind contribution to FAIR, is in the final installation phase. Tests of ion injection from the ESR are foreseen for the upcoming GSI beamtime period, followed by the commissioning of the ring within the following year.

A new transfer line has been designed for the injection from the Experimental Storage Ring (ESR). Thus all ion species presently accessible in ESR can be transferred to CRYRING. In addition, a local injector is available for ring commissioning and first operation. This local injector transfer line has been significantly modified compared to the former Stockholm configuration to meet the requirements at GSI. It provides stand-alone operation from a 40 kV platform where different ion species can be produced, transported to the RFQ and accelerated to the necessary 300 keV/u for injection into the ring.

One of the first experiments which can be performed with the offline source and the local injection is the investigation of polarized ion beams inside a storage ring. Recently, in an experiment at the ESR, an indication for optical polarization of an ion beam has been observed. Further systematic tests of optical pumping and polarization conservation of singly charged Mg or Be ions are foreseen at CRYRING.

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