IceCube has been designed as a discovery instrument with improved :

1. IceCube!! IceCube has been designed as a discovery instrument with improved: telescope area detection volume energy measurement of secondary muons and electromagnetic showers identification of neutrino flavor angular resolution

2. The IceCube Collaboration Institutions: 11 US, 8 European and 1 Japanese • Bartol Research Institute, University of Delaware • BUGH Wuppertal, Germany • Universite Libre de Bruxelles, Brussels, Belgium • CTSPS, Clark-Atlanta University, Atlanta USA • DESY-Zeuthen, Zeuthen, Germany • Institute for Advanced Study, Princeton, USA • Lawrence Berkeley National Laboratory, Berkeley, USA • Department of Physics, Southern University and A\&M College, Baton Rouge, LA, USA • Dept. of Physics, UC Berkeley, USA • Institute of Physics, University of Mainz, Mainz, Germany • Dept. of Physics, University of Maryland, USA • University of Mons-Hainaut, Mons, Belgium • Dept. of Physics and Astronomy, University of Pennsylvania, Philadelphia, USA • Dept. of Astronomy, Dept. of Physics, SSEC, University of Wisconsin, Madison, USA • Physics Department, University of Wisconsin, River Falls, USA • Division of High Energy Physics, Uppsala University, Uppsala, Sweden • Dept. of Physics, SCFAB, Stockholm University, Stockholm, Sweden • University of Alabama • Vrije Universiteit Brussel, Brussel, Belgium • Chiba University, Japan Also AMANDA only IceCube

3. Grid North 100 m AMANDA South Pole SPASE-2 Dome Skiway IceCube:Top View 80 strings 60 modules/string Volume 1 km3 Depth 1400-2400 m Counting House

4. IceTop AMANDA South Pole IceCube Skiway 80 Strings 4800 PMT 1400 m 2400 m

5. - flavors and energy ranges Filled area: particle id, angle, energy Shaded area: energy and angle.

6. µ-events in IceCube Eµ=6 PeV Eµ=10 TeV AMANDA-II 1 km Measure energy by counting the number of fired PMT. (This is a very simple but robust method)

7. Cascade event ne + N --> e- + X The length of the actual cascade, ≈ 10 m, is small compared to the spacing of sensors 1 PeV ≈ 500 m diameter Fully active calorimeter with linear energy resolution Sensitivity for diffused flux about the same as for muons E = 375 TeV

8. “Double Bang” t + N --> t- + X t + X • E << 1 PeV: Single cascade • (2 cascades coincide) • E ≈ 1 PeV: Double bang • E >> 1 PeV: Second cascade + tau track

9. 1 pp core AGN (Nellen) 2 p core AGN Stecker & Salomon) 3 p „maximum model“ (Mannheim et al.) 4 p blazar jets (Mannh) 5 p AGN (Rachen & Biermann) 6 pp AGN (Mannheim) 7 GRB (Waxman & Bahcall) 8 TD (Sigl) Diffuse Fluxes: Predictions and Limits Mannheim & Learned, 2000 Macro Baikal Amanda IceCube

10. IceCube deployment schedule