LumiCal serves three major purposes:

  1. Measuring the rate of Bhabha events at low angles. The well known Bhabha scattering cross section will allow the precise determination of the luminosity of the ILC. Achieving the desired precision of 10-4 is a challenge.
  2. Reducing background by acting as a mask.
  3. Improving the hermeticity of the ILC detector by providing electron and photon identification down to polar angles of a few mrad.

The technology of a Si-W sandwich calorimeter is under investigation for the LumiCal.
One of the challenges for LumiCal is the needed mechanical precision. A laser based position monitoring system is under development for LumiCal.




Print this Document   Sitemap   Contact