Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 46: Poster
HK 46.75: Poster
Donnerstag, 20. März 2014, 16:00–18:00, HZ Poster
Design of a Beam Position Sensitive Cavity as a Schottky Noise Detector for Mass Measurements in CR@FAIR — •Xiangcheng Chen1, Shahab Sanjari2,1, Peter Hülsmann1, Yuri Litvinov1,3, Fritz Nolden1, Jeremi Piotrowski4, and Markus Steck1 — 1GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — 2ExtreMe Matter Institute, Darmstadt, Germany — 3Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 4AGH University of Science and Technology, Krakow, Poland
Mass is one of fundamental characteristics of a nucleus. It plays an important role in many areas of physics, as well as other science branches. Especially in nuclear astrophysics, the masses of unstable nuclei close to nucleon drip lines are of great interests, since they are indispensable quantities for modelling nucleosynthesis processes in stellar objects. The Facility for Antiproton and Ion Research (FAIR), by providing high-intensity high-energy secondary beams, will enable unprecedented opportunities to investigate such nuclei. In particular, the collector ring (CR) is designed to be operated in the isochronous ion-optical mode as a high precision mass spectrometer. In order to satisfy the stringent requirements on accuracy and sensitivity for the future mass measurements, a non-destructive detector that is sensitive to single ions is being developed. Owing to the position sensitivity, it will be possible to correct for errors originating from different orbit lengths. In this work, we present simulation results of several possible designs of a cavity-based detector and discuss their potential applications as Schottky-noise detectors.