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MS: Fachverband Massenspektrometrie
MS 3: Poster
MS 3.8: Poster
Montag, 14. März 2011, 16:00–18:00, P1
A new resonant Schottky pickup for nuclear physics measurements of highly charged ions in storage rings — •M. Shahab Sanjari1,2, Peter Hülsmann1,2, Fritz Nolden2, Alwin Schempp1, Dinko Atanasov3, Klaus Blaum3, Fritz Bosch2, Violetta Ivanova2, Christophor Kozhuharov2, Yuri A. Litvinov2,3, Peter Moritz2, Claudius Peschke2, Peter Petri2, Daria Shubina3, Markus Steck2, Helmut Weick2, Nicolas Winckler3, Junxia Wu4, Yongdong Zang4, and Tiecheng Zhao4 — 1Goethe-Universität, Frankfurt am Main — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt — 3Max-Planck-Institut für Kernphysik, Heidelberg — 4Institute of Modern Physics, Lanzhou, China
An RF cavity was designed and used as a sensitive resonant pickup for Schottky noise of single or few particle beams in the ESR at GSI. The particle-induced energy builds up inside the resonator and is extracted with a matched loop antenna. A dedicated signal analysis system is then used for further processing. To allow high current experiments, the resonator can be disabled by taking apart its air-filled parts and shorting its gap. The design allows remote detuning of the resonance frequency. The resonator complements the existing capacitive Schottky noise pickup at the ESR. Nuclear experiments with highly charged ions such as time-resolved Schottky mass spectrometry and life time measurements were performed with much higher sensitivity. A similar cavity is currently being installed in the CSRe at IMP, Lanzhou. We will discuss the principles and recent results of these detectors.