Lake Baikal Neutrino Experiment Present and Future

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Lake Baikal Neutrino Experiment Present and Future. G.V.Domogatsky (INR, Moscow) for the Baikal collaboration. The Baikal Collaboration. Institute for Nuclear Research, Moscow, Russia . Irkutsk State University, Irkutsk, Russia. Skobeltsyn Institute of Nuclear Physics MSU, Moscow, Russia. - PowerPoint PPT Presentation

Text of Lake Baikal Neutrino Experiment Present and Future

  • Lake Baikal Neutrino ExperimentPresent and FutureG.V.Domogatsky (INR, Moscow)for the Baikal collaboration

  • 1366m Depth

  • Neutrino Telescope NT200+ (April, 2005)

  • The NT-200 Telescope*Installation 1993-1998

  • CampIce as a natural deployment platform~ 2 monthsNANP03

  • GOALSNatural flux of neutrinos with energy E>15GeV (search for point sources of neutrinos)WIMPMagnetic MonopolesDiffuse flux of very high energy (E>10 TeV) neutrinos

  • April 1998 - February 2003 , 1038 d, 372 events.

  • Atmospheric Muon-Neutrinos - With looser cuts, 1998-2002: 372 events. Nm(>15GeV)/Nm(>1GeV)~1/7 A higher statistics neutrino sample for Point-Source Search.- MC: 385 ev. Expected (15%BG). Skyplot (galactic coordinates)E_thr ~ 15GeV

  • Event selection criteria:

    hit channel multiplicity - Nhi t> 35 ch,upward-going monopole -(zi-z)(ti-t)/(tz) > 0.45 & o

    Background - atmospheric muons

  • Search for High Energy -Cascades* (BG)

  • Optical properties

  • Fiducial volumeVg(NT-200)AMANDA II Position of cascade vertexNeutrino Energy, lg(E/eV)

  • UPPER LIMITS ON THE DIFFUSE NEUTRINO FLUX (theoretical and experimental) -200+3

  • NT200+ commissioned April 2005 1. 3 outer strings were installed

    2. New DAQ final modernization - 2 Underwater PC with Flex DSL modem (1 Mbod), Underwater Ethernet - Synchronization unit * time synchronization NT200 outer strings * event clusterization

    3. New Software DOS -> Linux, Remote control

    4. New 2 cables to shore (2x4 km)

    5. Calibration - New bright Laser

  • NT200+

  • NT200+ time synchronization (new laser)mm

  • NT200+ Start of operation April 2005 Examples of events

  • NT200+ as a module of Gigaton (km3) Detector in Lake Baikal

  • NT200+ as a module of Gigaton (km3) Detector in Lake Baikal

  • A Gigaton (km3) Detector in Lake Baikal. 624m280m70m70m120m208m

  • Baikal GVDSchedule Milestones06-07 R&D, Testing NT200+08 Technical Design08-14 Fabrication (OMs, cables, connectors, electronics) 10-12 Deployment (0.1 0.3) km313-14 Deployment (0.3 0.6) km315-16 Deployment (0.6 0.9) km3