Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.104: Poster

Donnerstag, 19. März 2009, 14:00–16:00, Audi-Max

High Flux Experimental Setup for (γ, γ’) and photoactivation experiments — •Simela Aslanidou, Matthias Fritzsche, Norbert Pietralla, Deniz Sarvan, and Kerstin Sonnabend — Institut für Kernphysik, Technische Universität Darmstadt

Performing NRF experiments is an established way to explore and prove basic nuclear properties. The standard method [1] uses a continuous-energy photon spectrum produced by bremsstrahlung.

In order to perform NRF and photoactivation experiments in the region above 10 MeV a new experimental setup is to be constructed at the superconducting linear accelerator S-DALINAC in Darmstadt. The construction focussed on a high photon flux combined with a low neutron background. Therefore, a thick multi-layer aluminum target was implemented such that the incoming electrons are completely stopped. The neutron background is kept low due to the high neutron separation threshold of aluminum of 13.1 MeV.

In order to monitor fluctuations in the energy of the incoming electron beam, the method of the partial charge deposition in the radiator layers is adopted [2].

[1] U. Kneissl, N. Pietralla, A. Zilges J.Phys. G 32 (2006) R217-R252

[2] Matthias Fritzsche, Diploma Thesis, TU-Darmstadt (2007)