The Homestake Surface-Underground Scintillators -- Description

Two new detectors are currently under construction at the Homestake Gold Mine. Underground, the Large Area Scintillation Detector will be used to (1) search for slow, massive magnetic monopoles; (2) study the zenith angle distribution of neutrino-induced and penetrating muons; (3) search for neutrino bursts from stellar collapse events in the Galaxy; and (4) serve as a prototype for a solid, large volume scintillation detector used to search for nucleon decay and ⁸B solar neutrinos. The combined surface-underground telescope will be used to (5) measure the multiplicity and transverse momentum distributions of high-energy cosmic ray muons; (6) study the primary cosmic ray nuclear composition near 10¹⁵eV; and (7) search for cosmic point sources of neutrinos, gamma-rays, and high-energy cosmic rays (for example, Cygnus X-3) with very good angular resolution.