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Experimental Setup at Cave C

Experimental Setup at Cave C. new: proton tracking around the target with Si-strip detectors. new : proton tracking behind magnet with drift chambers. Exclusive measurement of all interesting reaction channels - knockout plus decay of residual system

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Experimental Setup at Cave C

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  1. Experimental Setup at Cave C new: proton tracking around the target with Si-strip detectors new: proton tracking behind magnet with drift chambers Exclusive measurement of all interesting reaction channels - knockout plus decay of residual system - inelastic excitation plus neutron/proton decay (nuclear, electromagnetic) - quasi-free scattering: (p,2p) EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  2. Progress from RHIB Thomas Aumann (GSI) EURONS PCC meeting, Mainz 6th April 2006 • High-resolution tracking diamond detectors (TUM) • good timing and position resolution, radiation hard • prototype tests performed • High-resolution tracking silicon detectors (GSI) • zero-degree detector for tracking of fragments and protons (in one detector) plus proton-recoil detector for quasi-free scattering experiments • prototype tests performed • Large-area detectors for heavy ions and light charged particles (Santiago de Compostela) • simulations performed, characteristic parameters defined RHIB Tasks EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  3. Progress from RHIB • High-resolution velocity measurements (Santiago de Compostela) • first RPC prototypes available • beam time request for tests with high-energy HI submitted • Pilot experiments and simulations (Madrid, GSI, Chalmers, Aarhus, Daresbury) • quasi-free scattering (p,2p), p(pn) etc in inverse kinematics • simulations including reaction theory (Surrey) • first full-scale experiment for quasi-free scattering in preparation • High-transmission beam line (Giessen) • ion-optical calculations and optimization of FRS-CaveC(RHIB) beam lins • Low-mass tracking detectors (FZR) (prototype ready) EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  4. Diamond detectors Prototype detectors Test with 1 GeV/u 27Al beam - time resolution s~60 psec (independent from signal amplitude) - efficiency 98.5% (segmentation) HADES start detector 1x1 cm2, 50mm substrate, 4x4 segmentation low-noise 2 GHz preamps EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  5. Diamond detectors Prototype detectors Tests at the Munich Tandem with 117 MeV 16O beam (energy loss equ. 1 GeV/u Kr) - Charge-collection spread 18% (inhomogeneity of polychrytaline material) - Charge-collection depth 15 mm - Variation of thickness ±1 mm 1x1 cm2, 100mm substrate, 4x4 segmentation EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  6. Diamond detectors Prototype detectors Tests at the Munich Tandem with 117 MeV 16O beam (energy loss equ. 1 GeV/u Kr) Radiation Hardness max dose 101116O ions/mm2 → tracking detectors for high-rate invironment (e.g., mid focus Super-FRS) 1x1 cm2, 100mm substrate, 4x4 segmentation EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  7. Si-strip detectors • AMS type detectors • DSSDs, 300  m thick, 41 × 72 mm2 • Strip pitch 100 m • Readout chips – VA64HDR9a (64 ch, very low power dissipation) • Energy resolution – 50 keV • Dynamic range – 100 keV - 14 MeV • 1024 readout channels/detector • Designed to work in vacuum (total power dissipation < 3 W/detector) • 9 detectors + FEE boards are available EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  8. Si-strip detectors • Beam test of 4 detectors - FRS@GSI, November 2005 fragments produced from 12C beam with E = 350 MeV/u EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  9. Si-strip detectors Results position measurement dE resolution Noise level EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  10. Experimental Setup at Cave C new: proton tracking around the target with Si-strip detectors new: proton tracking behind magnet with drift chambers Exclusive measurement of all interesting reaction channels - knockout plus decay of residual system - inelastic excitation plus proton decay (nuclear, electromagnetic) - quasi-free scattering: (p,2p) EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  11. Quasi-free scattering in inverse kinematics • kinematical complete measurement of (p,pn), (p,2p), (p,pd), (p,a), .... reactions • redundant experimental information: kinematical reconstruction from proton momenta plus gamma rays, recoil momentum, invariant mass • sensitivity not limited to surface → spectral functions → knockout from deeply bound states • cluster knockout reactions EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

  12. Si-strip detectors for QFS experiment EURONS PCC-Meeting, Mainz (Germany), 6.-7. April 2006

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