Monte Carlo Studies of the Tower of Power Detector

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Monte Carlo Studies of theTower of Power Detector

• Sean R Stratton
• Rutgers University

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Recap From Last Time

• Using MC program to generate data for a tower of
  power detector.
• Detector consisting of 15 mirrors 5 rings each
  3 mirrors wide.
• Goal is to detect more events in the 1016 to 1017
  eV range.

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What Has Changed?

• Increased the number of mirrors from 15?33.
• Simulating mirrors with 3x the area of the
  standard detector.
• Throwing events all around detector instead of
  making the footprint cut.

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Questions

• How many more events will be seen at the
  1016?1017 eV range?
• What do the events look like?
• 5th ring or 5th wheel?

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The Tower of Power Detector

• 33 Mirrors covering 90o of azimuth (15 mirrors in
  rings 3, 4, and 5).
• Extra mirrors in rings 1 2 to catch edge
  effects.
• TP3 version uses triple-area mirrors in rings 3,
  4, and 5.

Yellow boxes correspond to standard area mirrors,
Green boxes are triple-area mirrors in TP3
MC. White boxes are not used while making tower
MC.
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The Tower of Power Detector

• The mirror is circular and roughly 4m in
  diameter.
• The radius of curvature and cluster box
  separation are maximized for best detector
  response.
• Winston Cones simulated in ray tracing program,
  not in the MC (yet).

The Winston Cone shown is 10.11cm long
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TP3 Data Generation and Reconstruction Method

• Determined via ray tracing program that
  triple-area detector will collect 2.88 times more
  light.
• Modified MC to increase light to mirror if member
  of ring 3, 4, or 5.
• Modified Doug Bergmans ruspgf program to
  increase mirror area if elevation angle gt 30.5o

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Monte Carlo Running Parameters

• Throwing along an e-3 spectrum.
• Using parameters from data set 2.
• No adjacent mirror trigger in tower detector MC
  (yet).
• Using the same E/Rp cut for Standard and Tower of
  Power detectors.

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Profile Mismatch Problem
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Note no adjacent mirror trigger in tower
detector MCs.
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Results of MC Data
Numbers in parentheses are normalized to the
standard detector by number of thrown events
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(No Transcript)
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Tens digit is the ID of the highest ring
triggered, the ones digit is the number of rings
triggered in that event
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Whats Next?

• Include neighboring mirror trigger in TOP MC.
• Fix the profile mismatch problem in ruspgf
  analysis.