Instrument Analysis Workshop Series

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Instrument Analysis Workshop Series

• Eduardo do Couto e Silva
• All Hands Meeting
• March 17 , 2005

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Who are we ?
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New Web Page
Added after the workshop
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Goals for the Workshop Series
Prepare for Instrument Data Analysis

• Familiarizing LAT Collaborators with the
• LAT instrument
• Front-End Electronics
• Trigger and Data Acquisition
• Data Analysis Software
• Data taking plans during LAT integration using
• Cosmic rays
• Van de Graaff photons
• Create a forum to
• exchange knowledge between all subsystems and
  hardware and software oriented people
• Use simulated and real Data to
• exercise reconstruction algorithms (mostly with
  real data)
• exercise the data analysis tools and provide
  feedback to developers
• Develop expertise to
• uncover and quantify any instrumental effects
  that could have an impact on the LAT science data
• start the work that will evolve into the Science
  Operations Group of the ISOC
• create a core and trained group to participate in
  the beam tests analysis effort (after instrument
  delivery)

We are at this stage now
Develop ownership of the LAT instrument
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The Workshop Series

• Instrument Analysis Workshop 1 (June 7-8, 2004)
• Kick off meeting
• Homogenize the knowledge from people who will do
  the data analysis
• Assign projects using Monte Carlo simulated
  data
• Instrument Analysis Workshop 2 (September 27,
  2004 )
• Discuss results from MC projects assigned during
  Workshop 1
• Discuss results from projects derived from REAL
  data collected with the Engineering Models (CAL
  and TKR)
• Instrument Analysis Workshop 3 (March 10, 2005)
• Analysis of real data from the first two towers
• Instrument Analysis Workshop 4 (Summer, 2005)
• Analysis of real data from XX-towers (TBD)
• Instrument Analysis Workshop 5 (September, 2005
  TBR)
• LAT Data Analysis (and to validate Monte Carlo
  simulation)

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Improved SAS Software in time for data taking
From Leon/Tracy/Bill/Johanns talk
From Zach and Daves talks
Good agreement between true and reconstructed
distributions for 100 MeV muons in MC Simulations
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TKR Calibration
From Hiros talks
TOT before calibration
TOT after calibration
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TKR Efficiencies and Bad Channels
From Johanns talk
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Trigger Studies Tower A data
Preliminary results from Martin taken the day
before the presentation! Currently being reviewed
within the Trigger/Electronics group
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Trigger Studies
From Luiss talk
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Trigger Studies
From Luiss talk
From Johanns talk
From Luiss talk
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CAL and TKR together !
From Benoits talk
MC
DATA
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Finding muons in tower A data
From Billss talk
We can turn the cuts around demand CT Probs. lt
.1, only 1 track and 8-10 Xtals
Results 6627 Events
Layer by Layer
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Search for Photon Candidates too!
From Billss talk
Energy Spectrum of Gamma Candidates Is the
"bump" at 600 1000 MeV due to p0 production
in Bldg 33?
Angular Distribution Small FoV due to Track Cal
Info.
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Tower A - Photon candidate
From Anders based on Bills selection. For more
see Anderss talk
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Special Thanks to

• Diana, Debbie and Jeff for the organization and
  good food !
• Thanks to the entire IT team who gave us the
  first tower data 2 weeks before the workshop!
• Everyone who helped debug and improve the
  software infrastructure
• Thanks Richard and SAS for the support and
  patience with our requests usually due
  tomorrow(we made it!)
• Sure we want morewe will always do
• European/Japanese Collaborators who are providing
  substantial contribution
• NRL and Pisa for providing the whenever-you-can
  support during construction phase
• Everyone in the recently created Trigger group,
  who gave us a first look at their preliminary
  data
• Bill and Steve for the guidance and support
• Couldnt do it without you !
• Anders, Xin and Warren
• Hard-working, creative, dependable and fun to
  work with