We review the present status of the Baikal Neutrino Project. The construction and performance of the large deep underwater Cherenkov detector for muons and neutrinos, NT-200, which is currently under construction in Lake Baikal are described. Some results obtained with the first stages of NT-200 -NT-36 (1993-95), NT-72 (1995-96) and NT-96 (1996-97) are presented, including the first clear neutrino candidates selected with 1994 and 1996 data.
We review the present status of the Baikal Neutrino Project. The construction and performance of the large deep underwater Cherenkov detector NT-200 with 192 PMTs , which is currently taking data in Lake Baikal, are described. Some results from intermediate detector stages are presented.
We present the results of a search for high energy extraterrestrial neutrinos with the Baikal underwater Cherenkov detector NT200, based on data taken in 1998 -2003. Upper limits on the diffuse fluxes of ν e + ν µ + ν τ , predicted by several models of AGN-like neutrino sources, are derived. For an E −2 behavior of the neutrino Preprint submitted to Elsevier Science 2 March 2018 spectrum, our limit is E 2 Φ ν (E) < 8.1 × 10 −7 cm −2 s −1 sr −1 GeV over an neutrino energy range 2 × 10 4 ÷ 5 × 10 7 GeV. The upper limit on the resonantν e diffuse flux is Φν e <3.3×10 −20 cm −2 s −1 sr −1 GeV −1 .
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