Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 42: Nuclear and Particle Astrophysics III

HK 42.1: Group Report

Thursday, March 11, 2004, 13:30–14:00, F

Final Results of the LENS pilot phase — •Dario Motta¹, Christian Buck¹, Francis Xavier Hartmann¹, Thierry Lasserre², Stefan Schönert¹, and Ute Schwan¹ — ¹Max Planck Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — ²CEA/Saclay, DAPNIA/SPP,91191 Guf-Sur-Yvette, France

LENS (Low Energy Neutrino Spectroscopy) is a project aiming at the real time, energy resolved and flavor specific measurement of low energy solar neutrinos. A LENS prototype detector has been installed early in 2003 at the LLBF (Lens Low Background Facility) in the Gran Sasso underground laboratories, Italy, and has been taking data in its final configuration since October 2003. After briefly revising the motivations and goals of the project, the most recent experimental achievements of the the LENS R&D will be reported and special emphasis will be given to the final results of the LLBF prototype, which conclude the LENS pilot phase. The implications of this experimental studies for the feasibility of the LENS concept for the measurement of the ⁷Be and pp solar neutrinos are discussed.