München 2019 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 31: Instrumentation VII and Applications
HK 31.2: Talk
Tuesday, March 19, 2019, 17:00–17:15, HS 12
Status report on NEPTUN upgrade and total photoabsorption setup PROTEUS — •Patrick van Beek1, Thomas Aumann1,2, Martin Baumann1, Alexander Fuchs1, Daniel Körper1,2, Yevhen Kozymka1, Heiko Scheit1, and Dmytro Symochko1 — 1TU Darmstadt — 2GSI Helmholtzzentrum
The low-energy photon tagging facility NEPTUN at the superconducting Darmstadt linear accelerator (S-DALINAC) can be used to study the photoabsorption cross section of nuclei in the energy regions of Pygmy Dipole and Giant Dipole Resonances. From the complete photo nuclear cross section spectrum the dipole polarizability of the nucleus can be calculated, which helps constraining the symmetry energy in the equation of state. NEPTUN was undergoing a major upgrade. The setup was extended by the target positioning system PROTEUS, which ensures a precise and rapid target exchange. Its concept idea in the context of NEPTUN and a characterization will be presented.
Supported by DFG (SFB 1245).