The Liquid Scintillator Neutrino Detector (LSND) was a
scintillation counterat Los Alamos National Laboratorythat measured the number of neutrinos being produced by an accelerator neutrino source. The LSND project was created to look for evidence of neutrino oscillation, and its results conflict with the standard model expectation of only three neutrino flavors, when considered in the context of other solar and atmospheric neutrino oscillation experiments. Cosmological data bound the mass of the sterile neutrino to ms < 0.26eV (0.44eV) at 95% (99.9%) confidence limit, excluding at high significance the sterile neutrino hypothesis as an explanation of the LSND anomaly. [S. Dodelson, A. Melchiorri, A. Slosar, Phys. Rev. Lett. 97 (2006) 04301, http://xxx.lanl.gov/abs/astro-ph/0511500] The controversial LSND result was tested by the MiniBooNEexperiment at Fermilab, which refuted a simple 2-neutrino oscillation interpretation of the LSND result.
The detector consisted of a tank filled with 167 tons (50000 gallons) of
mineral oiland 14 pounds of b-PDB (butyl-phenyl-bipheny-oxydiazole) organic scintillator material. Cherenkov light emitted by particle interactions was detected by an array of 1220 photomultipliertubes. The experiment collected data from 1993to 1998.
*Athanassopoulos "et al", "The Liquid Scintillator Neutrino Detector and LAMPF Neutrino Source", Nucl. Instrum. Meth. A388 (1997) 149-172. [http://arxiv.org/abs/nucl-ex/9605002 nucl-ex/9605002]
* [http://www.lanl.gov/news/releases/archive/01-122.shtml LSND strengthens evidence for neutrino oscillations]
* [http://www.nu.to.infn.it/exp/all/lsnd/ LSND scientific publications]
* [http://www.slac.stanford.edu/spires/find/experiments/www2?expt=LAMPF-1173 LSND scientific publications, SPIRES database]
Wikimedia Foundation. 2010.