Comparison of OM Responses at Different Sites

1. Comparison of OM Responses at Different Sites Zh.-A. Dzhilkibaev, A. Gazizov and Ch. Spiering

2. N = N + N g m d Response of OM to Muon Tracks Uniformtrack N – muon’s light m d N – -el. light (8% N ) d m Sites Lake Baikal (BAIKAL) Mediterranean (ANTARES) Antarctic ice (AMANDA)

3. Optical Parameters Light wave-length: 350 nm – 600 nm BAIKALAMANDAANTARES Absorption - Scattering - Scattering Function - Inverse light velocity, ns/m - ~20 m ~100 m ~60 m 30–50 m ~3 m 50-70 m 0.85-0.9 0.9-0.95 ~0.85 4.68-4.5 4.59-4.44 4.73-4.55

4. absorption scattering

5. scattering function

6. Time differences (350 nm – 600 nm) Refraction index

7. Characteristics of OM angular sensitivity quantum efficiency

8. Influence of light velocity and absorption on OM time response (without scattering)

9. FWHM of the time distribution (without scattering)

10. Dependence of OM response on its orientation

11. Time distributions BAIKAL AMANDA ANTARES r = 10 m r = 10 m r = 25 m r = 25 m

12. Integral time distributions N(<t) r=10 m, cos(q)=-1 r=25 m, cos(q)=-1 r=60 m, cos(q)=-1

13. r=10 m, cos(q)=1 r=25 m, cos(q)=1 r=60 m, cos(q)=1

14. Number of photoelectrons as a function of distance

15. SUMMARY