The Baikal Neutrino Telescope: From NT200 to NT200+

We review the status of the Baikal Neutrino Telescope, which has recently been upgraded to the 5 Mton detector NT200+. We present results on searches for upward going atmospheric neutrinos and relativistic magnetic monopoles, obtained from 1998–2002 with the predecessor detector NT200. A search for very high energy neutrinos yields an upper limit on the extraterrestrial di-use neutrino ux for 20 TeV < E < 50 PeV. We describe the strategy of upgrading NT200 to NT200+ and creating a detector on the Gigaton (km3) scale at lake Baikal. R&D activities on that next stage detector have been started.