Conditions of environment
Table 1. Experimental parameters and infrastructure of the site | |
Depth (max.) | 4,000 meters of water equivalent (m.w.e.) |
Composition of the rock | |
Average density | 2.8 g·cm–3 |
Rock temperature at 4000 m.w.e. | 22 oC |
Muon flux | 1,1×10–4 m–2·s–1 |
Radon concentration | 20 Bq·m–3 in ventilated areas |
Neutron flux | a few x 10–6 cm–2·s–1 (depending on energy) |
Infrastructure | 3 MW independent electric power supply |
Air conditioning and thermalization | |
Air extraction and forced ventilation in/from outside | |
Optical GBLAN, 100 to 1000 MB connection to outside | |
Two-way radio network both on the surface and underground for safety |
Measured muon flux at different depths in the Pyhäsalmi Mine (blue symbols) compared with WIPP (red triangle), Boulby (red circle) and LNGS (red square).