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Ya. Karlik , Kamchatka Hydro-Physics Inst. V. Svet , Acoustic Inst., Moscow

Ya. Karlik , Kamchatka Hydro-Physics Inst. V. Svet , Acoustic Inst., Moscow “Converted Hydro-Acoustic Array MG-10M as Basic Module for a Deep-Water Nu-Telescope” ARENA Workshop, Zeuthen, Germany, 19 May, 2005

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Ya. Karlik , Kamchatka Hydro-Physics Inst. V. Svet , Acoustic Inst., Moscow

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  1. Ya. Karlik, Kamchatka Hydro-Physics Inst. • V. Svet, Acoustic Inst., Moscow • “Converted Hydro-Acoustic Array MG-10M as Basic • Module for a Deep-Water Nu-Telescope” • ARENA Workshop, Zeuthen, Germany, • 19 May, 2005 • Introduction: • Kamchatka array of 2400 hydrophones (BW up to 1.5 kHz). • Submarine array of 132 hydrophones – MG-10M (BW up to 25 kHz). • Key parameters of MG-10M. • IV Development of the project of a prototype module for nu-telescope using MG-10M..

  2. In 1987 Karlik, Learned, Svet and Zheleznykh suggested to use the Russian Navy stationary hydro-acoustical Kamchatka array AGAM of 2400 hydrophones for goals of the extremely high-energy Neutrino Astronomy (Proc. XXXII-nd Rencontres de Moriond)

  3. In 2000 the same authors (+Dedenko) considered possibilities of using for EHENA goals a portable hydro-acoustic system designated MG-10M, formerly used by the USSR Navy, now withdrawn from service.

  4. IV. PORTABLE SUBMARINE ANTENNA MG-10M as a basic module of the deep-water Neutrino Telescope

  5. The system MG-10M is the most suitable array to start the first ocean long-term experimental researches. This system has high enough factor of amplification (more than 1700) in a frequency band of 10-25 kHz, is capable to work on depths up to 400 meters, is compact and possesses a high degree of reliability (~10 years)

  6. SADCO collaboration has now: • one MG-10M antenna which was bought by INR and tested at a plant in St. Petersburg, • programs for simulations acoustic signals from cascades in water, transportation of the signals in the • Real Ocean etc.

  7. Acoustic pulses at distances of 0.4; 1; 3: 10 km by the electron cascade of 1019 eV in water with the LPM-effect

  8. Distribution of frequencies of acoustic signals at 0.4; 1; 3; 10 km by the electron cascade of 1021 eV in water with the LPM-effect

  9. Профиль вертикальной скорости звука, принятый в расчетах поля

  10. Длина каскада - 10 м. Угол наклона - 0 град. Глубина источника - 50 м.

  11. Длина каскада - 10 м. Угол наклона - 0 град. Глубина источника - 100 м.

  12. Длина каскада - 10 м. Угол наклона - 0 град. Глубина источника - 150 м.

  13. Длина каскада - 10 м. Угол наклона - 30 град. Глубина источника - 150 м.

  14. Conclusion • The most suitable place for tests and investigations with MG-10M is the Mediterranean Sea. • The most constructive way for realization of the suggested project is an international collaboration.

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