DOI: 10.7910/dvn/xanwat
title: Neutrino effective area tables for IceCube-Gen2

description: &lt;h1 id="neutrino-effective-area-tables-for-icecube-gen2"&gt;Neutrino
effective area tables for IceCube-Gen2&lt;/h1&gt;
&lt;p&gt;This package contains tabulated neutrino effective areas for the
detector described in the &lt;a href=""&gt;Technical Design Report for the
IceCube-Gen2 Neutrino Observatory&lt;/a&gt;.&lt;/p&gt;
&lt;p&gt;The effective areas are stored in a JSON file
&lt;code&gt;gen2_tdr_effective_areas.json&lt;/code&gt;. The top-level object
contains metadata relating to how the table was made, while effective
areas are stored in the &lt;code&gt;data&lt;/code&gt; object. Each element of this
array is an object representing the effective area of a particular event
selection (&lt;code&gt;channel&lt;/code&gt;) and detector (&lt;code&gt;detector&lt;/code&gt;).
The attributes of this object are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;code&gt;detector&lt;/code&gt;: the detector used (IceCube, Gen2-Optical,
Gen2-Radio)&lt;/li&gt;
&lt;li&gt;&lt;code&gt;channel&lt;/code&gt;: event signature for optical detection
(shadowed_tracks, unshadowed_tracks, cascades, starting_tracks,
double_cascades)&lt;/li&gt;
&lt;li&gt;&lt;code&gt;energy&lt;/code&gt;: 1-D array of bin edges in neutrino energy at
the surface of the Earth, in GeV&lt;/li&gt;
&lt;li&gt;&lt;code&gt;cos_zenith&lt;/code&gt;: 1-D array of bin edges in cosine of zenith
angle of the neutrino arrival direction. At the South Pole,
&lt;code&gt;cos(zenith) =~ -sin(declination)&lt;/code&gt;.&lt;/li&gt;
&lt;li&gt;&lt;code&gt;area&lt;/code&gt;: 3-D array of effective areas in m^2. The
dimensions are: neutrino type (anti-electron neutrino, electron
neutrino, anti-muon neutrino, muon neutrino, anti-tau neutrino, tau
neutrino), neutrino energy (in bins given by &lt;code&gt;energy&lt;/code&gt;),
direction (in bins given by &lt;code&gt;cos_zenith&lt;/code&gt;),&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;For IceCube-Gen2, the &lt;code&gt;detector&lt;/code&gt;/&lt;code&gt;channel&lt;/code&gt;
combinations are:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Gen2-Optical / shadowed_tracks: through- and downgoing tracks
detected in the IceCube-Gen2 Optical Array whose trajectory passes
through the footprint of the IceCube-Gen2 Surface Array. Such events
have a reduced background from penetrating atmospheric muons.&lt;/li&gt;
&lt;li&gt;Gen2-Optical / unshadowed_tracks: throughgoing tracks detected in
the IceCube-Gen2 Optical Array whose trajectory does not pass through
the footprint of the IceCube-Gen2 Surface Array. This includes
down-going events with significant background from penetrating
atmospheric muons as well as up-going events with only atmospheric
neutrino background.&lt;/li&gt;
&lt;li&gt;Gen2-Optical / cascades: events starting in the instrumented volume
of the IceCube-Gen2 Optical Array and classified as cascades.&lt;/li&gt;
&lt;li&gt;Gen2-Optical / starting_tracks: events starting in the instrumented
volume of the IceCube-Gen2 Optical Array and classified as starting
tracks.&lt;/li&gt;
&lt;li&gt;Gen2-Optical / double_cascades: events starting in the instrumented
volume of the IceCube-Gen2 Optical Array and classified as double
cascades.&lt;/li&gt;
&lt;li&gt;Gen2-Radio / radio_events: events detected by the IceCube-Gen2 Radio
Array.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Effective areas calculated in the same framework are provided for the
existing 86-string IceCube detector for comparison:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;IceCube / shadowed_tracks: through- and downgoing tracks detected in
IceCube whose trajectory passes through the footprint of IceTop.&lt;/li&gt;
&lt;li&gt;IceCube / shadowed_tracks: through- and downgoing tracks detected in
IceCube whose trajectory does not pass through the footprint of
IceTop.&lt;/li&gt;
&lt;li&gt;IceCube / cascades: events starting in the instrumented volume of
the IceCube-Gen2 Optical Array and classified as cascades.&lt;/li&gt;
&lt;li&gt;IceCube / starting_tracks: events starting in the instrumented
volume of the IceCube-Gen2 Optical Array and classified as starting
tracks.&lt;/li&gt;
&lt;li&gt;IceCube / double_cascades: events starting in the instrumented
volume of the IceCube-Gen2 Optical Array and classified as double
cascades.&lt;/li&gt;
&lt;/ul&gt;