ABSTRACT
The host rock for the detector chamber was rock salt layer at the depth of 1000 m lying above the copper deposit in the Legnica-Głogów Copper Area (LGOM).
The main advantages of this location were very low level of natural radioactivity background registered there and no water hazard. The rock
1 INTRODUCTION
LAGUNA is an acronym for Large Apparatus studying Grand Unification and Neutrino Astrophysics. It is FP7 European Union project for design of a pan-European infrastructure for a next generation deep underground neutrino observatory. The principal goal of the first project phase is to assess the feasibility of a deep underground chamber able to host the giant neutrino detector. The observatory is expected to provide new and unique scientific opportunities, and lead to the discoveries in the field of astroparticle physics. Seven potential locations are being considered in the project: the Boulby potash mine in the UK, Fréjus tunnel in France, Caso tunnel in Italy, Canfranc tunnel in Spain, the Pyhäsalmi metal ore mine in Finland, the Polkowice-Sieroszowice mine in Poland and the Unirea salt mine in Romania (Kisiel et al., 2009), (Rubbia 2010). The location of these sites is shown in Figure 1.
