approximately 1,500 m2 is available for experiments. There is potential for expansion.

•  The flux of neutrons with energies greater than 0.5 MeV is 1.7 × 10−2 m−2s−1; the muon flux is 4.5 × 10−2 m−2s−1.

•  A building on the surface (200 m2) hosts laboratories for computing, electronics, and chemistry, offices, a conference room, changing rooms, mess rooms, a mechanical workshop, and storage and construction rooms. About 30 scientists work at the laboratory.

•  The scientific program is focused on dark matter search: ZEPLIN II and ZEPLIN III, both based on two phases of Xe, and DRIFT II, which is in the research and development phase. In addition to the physics program, there are low radioactivity measurements and geophysics research.

Laboratorio Subterráneo de Canfranc (Spain)

The underground laboratory at Canfranc, Spain, was created beneath the Pyrenees mountains in the 1980s by the Nuclear and High-Energy Physics Department of Saragossa University and expanded in 2005, after the excavation of a road tunnel. It is managed by a consortium of the Ministry for Education and Science, the Government of Aragon, and the University of Saragossa.

•  The maximum rock coverage is 850 m.

•  The access is horizontal, via a road tunnel.

•  The available underground space consists of Hall A, measuring 40 × 15 × 12(h) m3, Hall B, measuring 15 × 10 × 8(h) m3, a clean room of 45 m2, and service facilities in a 215 m2 space.

•  The muon flux is between 2 × 10−3 and 4 × 10−3 m−2s−1, depending upon the location, while the neutron flux is 2 × 10−2 m−2s−1. The Rn activity in the air is 50-80 Bq/m3 with a ventilation of 11,000 m3/h—that is, one lab volume in 40 min.

•  The surface building contains headquarters, administration, a library, a meeting room, offices, laboratories, storage and a mechanical workshop, safety structures, and management, for a total of approximately 1,500 m2.

•  The scientific program, developed with the advice of an international scientific committee, includes the following experiments: on dark matter searches, ANAIS (looking for an annual modulation with NaI crystals) and ROSEBUD (developing scintillation bolometers in the frame of Eureka), and on double-beta decay, NEXT (with 100 kg of enriched Xe). Two other projects are ancillary to experiments in other laboratories: BiPo for the

The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement