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Atmospheric Neutrino Software Update

In this talk presented by Andy Blake from Cambridge University on December 7, 2006, the AtNu software update is discussed, focusing on atmospheric neutrino analysis using AtNu Ntuples. The presentation highlights the class structure of Ntuples through the AtNuEvent package and tools for event display and analysis provided by AtNuUtils. Significant gains were made in data processing, with short Ntuples simplifying the analysis of far detector data, comprising 40 million events, facilitating the exploration of atmospheric and beam neutrinos, as well as cosmic-ray muons.

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Atmospheric Neutrino Software Update

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  1. Atmospheric Neutrino Software Update Andy Blake Cambridge University Thursday December 7th 2006

  2. AtNu Ntuples • Contained vertex atmospheric • neutrino analysis carried out • using AtNu Ntuples. • – Ntuple classes in AtNuEvent • package (class structure right). • – Ntuples filled using NtpMaker • module in AtNuOutput package. • – Documentation in doc-db #2361. • – Event display and analysis tools • provided by AtNuUtils package. • [B. Speakman]. Andy Blake, Cambridge University AtNu Software Talk, slide 2

  3. AtNuUtils Event Display

  4. AtNu Short Ntuples • AtNuAna package in CVS distills important physics analysis • variables from AtNu Ntuples into lightweight ROOT ntuples. • – no dependencies other than on ROOT itself. • Information contained in short ntuples: • Reconstruction • Every reconstructed track. • Overall shower information. • Summary of strip information. • Summary of veto shield information. • Data/MC • Basic event information. • Data quality monitoring. • Beam monitoring. • MC truth. Event Selection Event topology variables. Event kinematics variables. Event selection variables. Event Type Event Containment (FC/PC). Event Direction (UP/DN). Cosmic Muon. Multiple Muon. Beam Spill. Andy Blake, Cambridge University AtNu Software Talk, slide 4

  5. AtNu Short Ntuples • Have generated AtNu short ntuples for all far detector data • between August 1st 2003 and February 28th 2006. • – 40M events. • – 600Mb/month. • Enables easy introduction to far detector physics analyses. • – Atmospheric neutrinos. • – Upward-going muons. • – Cosmic-ray muons. • – Beam neutrinos. • See http://www.hep.phy.cam.ac.uk/minos/atnu_ntuples/ Andy Blake, Cambridge University AtNu Software Talk, slide 5

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