ֵּ calorimeter requirements
- Rapidity coverage - largest possible to observe rare processes. The best granularity for
|
|<2.5 (e/
), coarser for 2.5<||<5 (jet,ETmiss).
- Electron reconstruction capability from 1-2 GeV (e from b-decays) up to 5 TeV (Z' and W'
decays)
- Exellent energy resolution over the energy range 10-300 GeV (to achieve 1% mass
resolution for H ->
and H -> 4e channels).
- Total thickness of at least 24 radiation lengths at = 0 (to keep contribution to the energy
resolution from longitudinal fluctuations of high-energy showers (E>500 GeV) to an
acceptable level.
- Dynamic range 50 MeV (electronic noise per channel) to 3 TeV (e from decays of Z' and W'
with masses 5-6 TeV).
- Energy-scale precision 0.1% (200 MeV precision on the Higgs mass) Linearity of response
better than 0.5% (up to 300 GeV).
- Measurement of the shower direction e with a resolution of ~50 mrad/sqrt(E)
- Exellent /jet,
e/jet,
/jet separation
- Speed of response, noise, high granularity, bunch-crossing identification, neutron
fluences up to 1015 n/cm2 and rad.doses up to 200 kGy (over 10 years)...
