1996/12/12 by L. Bergström, Bergstrom, L.
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Detector Development and Performance
paper · pdf · doi:10.48550/arxiv.astro-ph/9612122
openalex publication_date 1996/12/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
At the AMANDA South Pole site, four new holes were drilled to depths 2050 m\nto 2180 m and instrumented with 86 photomultipliers (PMTs) at depths 1520-2000\nm. Of these PMTs 79 are working, with 4-ns timing resolution and noise rates\n300 to 600 Hz. Various diagnostic devices were deployed and are working. An\nobserved factor 60 increase in scattering length and a sharpening of the\ndistribution of arrival times of laser pulses relative to measurements at\n800-1000 m showed that air bubbles are absent below 1500 m. Absorption lengths\nare 100 to 150 m at wavelengths in the blue and UV to 337 nm. Muon coincidences\nare seen between the SPASE air shower array and the AMANDA PMTs at 800-1000 m\nand 1500-1900 m. The muon track rate is 30 Hz for 8-fold triggers and 10 Hz for\n10-fold triggers. The present array is the nucleus for a future expanded array.\nThe potential of AMANDA for SUSY dark matter search through the detection of\nhigh-energy neutrinos from the centre of the Sun or Earth is discussed.\n