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. - презентация

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 I.Introduction: Kamchatka array of 2400 hydrophones (BW up to 1.5 kHz). II.Submarine array of 132 hydrophones – MG-10M (BW up to 25 kHz). III.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)

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6 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of using for EHENA goals a portable hydro-acoustic system designated MG-10M, formerly used by the USSR Navy, now withdrawn from service.

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

8 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 kHz, is capable to work on depths up to 400 meters, is compact and possesses a high degree of reliability (~10 years)

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11 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.

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

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

14 Профиль вертикальной скорости звука, принятый в расчетах поля

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

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

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

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

19 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.