Cosmic Ray Detection with IceTop / IceCube - Villa Olmo

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Unfolded Energy Spectra (IceTop-26) Proton assumption Iron assumption preliminary preliminary Two component assumption Isotropic flux condition requires consistent spectra in all zenith bands Best agreement in all three zenith bands for p/Fe two component model Works also for other reasonable composition models (e.g. poly-gonato) preliminary Not a composition measurement but a consistency check! 22
Muon Identification with IceTop Only histogram signal of tanks where the expected signal S exp is below threshold (< 1 VEM) (Effective cut on radial distance → only outer stations) Mostly low energy muons at the outer region of a shower Muon peak appears at ~1 VEM → Peak area (# muons) sensitive to primary composition 23
Page 1 and 2: Cosmic Ray Detection with IceTop /
Page 3 and 4: IceCube Site Amundsen-Scott Station
Page 5 and 6: Digital Optical Module Design Requi
Page 7 and 8: IceTop Station 7
Page 9 and 10: Local Coincidence and Trigger Tank
Page 11 and 12: Tank Signal Distribution HG-LG tran
Page 13 and 14: Lateral Distribution Energy: ~ 10 P
Page 15 and 16: Fit Procedure and Resolutions Nega
Page 17 and 18: Cosmic Ray Physics with IceCube 17
Page 19 and 20: IceTop Energy Reconstruction Proton
Page 21: Response Matrix One matrix for ea
Page 25 and 26: IceTop−IceCube Coincident Events
Page 27 and 28: Cosmic Ray Composition Proton fract
Page 29: Summary 90% of IceCube are install

Cosmic Ray Detection with IceTop / IceCube - Villa Olmo

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