Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Instrumentation und Anwendungen I

HK 4.5: Talk

Monday, March 10, 2008, 15:15–15:30, 2C

Performance of the new Si microstrip detector prototypes for the R3B recoil system — •Kristian Larsson for the R3B collaboration — GSI Darmstadt

The performance of the new double-sided silicon microstrip detector (DSSD) prototypes developed for the R3B setup (Reaction studies with Relativistic Radioactive Beams) will be presented. They have been recently tested and used in several experiments at GSI, Darmstadt: measurements of nuclear and electromagnetic dissociation ¹⁷Ne and ²⁷P, as well as for a feasibility experiment of quasi-free scattering in inverse kinematics using a ¹²C beam. All experiments required to record simultaneously protons and the residual fragments with good position and energy resolution. This requires both low noise and high dynamic range of the front-end electronics. Our experimental results show that both protons and heavy ions ranging from Z=2 up to 12 can be identified with good signal-to-noise ratio and spatial resolution. This detection system serves as a prototype for the R3B target recoil detection system, which will be composed of two shells of DSSDs enabling the use of extended, thick liquid hydrogen and helium targets for scattering experiments with radioactive beams at FAIR.