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2.8 AMANDA neutrino telescope at the South Pole
magnitude compared
2.8 AMANDA Neutrino at the South Pole
to earlier searches.
To extend BESS measurements to lower energies and even higher statistics, an evolutionary instrument, BESS-Polar, is under construction for long-duration polar balloon flight in 2004. BESS-Polar employs a new-generation thin solenoid and other improvements to reduce the instrumental energy limit to below 100 MeV for singly-charged particles. An expected flight duration of 20 days should provide exceptional sensitivity to deviations from secondary production in the low-energy antiproton spectrum and, if no antihelium is found, will push the upper limit for the antihelium/helium ratio down to -10-7.
<
Telescope
A large neutrino-telescope embedded in the ice shield above the south pole constitutes the Antarctic Muon And Neutrino Detector Array (AMANDA). In 1994 the USA and Sweden collaborated in the installation of a first test set of a string of neutrino detectors at a depth between 800 and 1000 m. However, as residual bubbles in the ice adversely affected the transparency of the ice, four new strings, each containing 86 light detectors were deployed in 1996 to a depth of 1520-2000 m by a DESY group which had, by then, joined the original collaborators. The installation was a marked success as the ice properties were much better at the greater depth. From this test, it was concluded that it was possible to construct a neutrino-telescope at the south pole. The unit was expanded by 216 light detectors in 1997 and by a further 122 in 1998. The aim is to increase the number of detectors so that they eventually occupy a volume of 1 km3.
.
0
81
2.8 AMANDA Neutrino at the South Pole
to earlier searches.
To extend BESS measurements to lower energies and even higher statistics, an evolutionary instrument, BESS-Polar, is under construction for long-duration polar balloon flight in 2004. BESS-Polar employs a new-generation thin solenoid and other improvements to reduce the instrumental energy limit to below 100 MeV for singly-charged particles. An expected flight duration of 20 days should provide exceptional sensitivity to deviations from secondary production in the low-energy antiproton spectrum and, if no antihelium is found, will push the upper limit for the antihelium/helium ratio down to -10-7.
<
Telescope
A large neutrino-telescope embedded in the ice shield above the south pole constitutes the Antarctic Muon And Neutrino Detector Array (AMANDA). In 1994 the USA and Sweden collaborated in the installation of a first test set of a string of neutrino detectors at a depth between 800 and 1000 m. However, as residual bubbles in the ice adversely affected the transparency of the ice, four new strings, each containing 86 light detectors were deployed in 1996 to a depth of 1520-2000 m by a DESY group which had, by then, joined the original collaborators. The installation was a marked success as the ice properties were much better at the greater depth. From this test, it was concluded that it was possible to construct a neutrino-telescope at the south pole. The unit was expanded by 216 light detectors in 1997 and by a further 122 in 1998. The aim is to increase the number of detectors so that they eventually occupy a volume of 1 km3.
.
0
81