Reconstruction Algorithm Comparison

» Introduction

» Monte Carlo sample

» Processing times

» Trigger level
      » effective area
      » angular resol. vs energy
      » efficiency
      » energy spectra
      » angular resol. vs declination
      » events vs azimuth
      » fakes
      » summay table

      » comparison 9, 21, 80 lines
      » check retriggering

  » Cut set 1
      » effective area
      » angular resol. vs energy
      » efficiency
      » energy spectra
      » angular resol. vs declination
      » events vs azimuth
      » fakes
      » summay table

      » comparison 9, 21, 80 lines
      » check retriggering

» Cut set 2
      » effective area
      » angular resol. vs energy
      » efficiency
      » energy spectra
      » angular resol. vs declination
      » events vs azimuth
      » fakes
      » summay table

      » comparison 9, 21, 80 lines
      » check retriggering

» Cut set 3
      » effective area
      » angular resol. vs energy
      » efficiency
      » energy spectra
      » angular resol. vs declination
      » events vs azimuth
      » fakes
      » summay table

      » comparison 9, 21, 80 lines
      » check retriggering

» Event rates vs zenith cut
     » corsika events
     » cosmic signal
     » atmospheric neutrinos

» Preliminary conclusions

Comments to:
zornoza@icecube.wisc.edu

Event rates vs zenith cut

Here we show the effect of a cut in the reconstructed zenith angle on the event and data rates. We also show the effect in the up-going neutrino signal and atmospheric neutrinos. The results shonwn here correspond to the 21-line detector.

At the end of this section we also compare the results of linefit for different threshold in the number of DOMs which produce a trigger.

Corsika events

Distribution of reconstructed zenith angle (first guesses and llhs)

First guesses

Log-likelihood

Rate of events surviving a cut in the zenith angle

First guesses:

Range: 0-180

Range: 60-100

Log-likelihoods:

Range: 0-180

Range: 60-100

Here you can see a table with these results.

We can also translate these numbers into a data event rate taking into account that a trigger at 8 hit DOMs, corresponds to ~10 kB/s.

Cosmic neutrinos

Distribution of reconstructed zenith angles for a cosmic neutrino spectrum:

These plots show the fraction of cosmic signal surviving a cut in the reconstructed zenith angle:

First guesses:

Range: 0-180

Range: 60-100

Log-likelihoods:

Range: 0-180

Range: 60-100

Here you can see a table with these results.

Atmospheric neutrinos

Distribution of reconstructed zenith angles for a atmospheric neutrinos:

These plots show the fraction of cosmic signal surviving a cut in the reconstructed zenith angle:

First guesses:

Range: 0-180 deg

Range: 60-100 deg

Log-likelihoods:

Range: 0-180 deg

Range: 60-100 deg

Here you can see a table with these results.

Event rates vs threshold

We compare here the rates (form corsika events) vs the cut in the zenith angle for different thresholds in the number of hit DOMs to trigger the detector.

Range: 0-180 deg

Range: 60-100 deg

This is the effect of the hit DOM threshold on the cosmic signal.

Range: 0-180 deg

Range: 60-100 deg

We also include the rates of atmospheric neutrinos for different zenith cuts and hit DOM thresholds.

Range: 0-180 deg

Range: 60-100 deg