Quick Look at Segmentation

• Is the calorimeter too close to the IP to allow particles to separate?

• Take a look at two particles (e,p) with varying opening angles

  • 5 GeV e + p at q=900
  • step Dj by 20

• 1 cm2 towers

• Look at fraction of pion energy in towers hit by electron

• Overlap fractions:

  • 00: 9%
  • 20: 3%
  • 40: 1%
  • 60: 0.7%
  • 80: 0.5%

• pion shower starts later and spreads out more than electron’s.

Previous slide

Next slide

Back to first slide

View graphic version