Detector Characteristics Requested by FCC-ee

Basic geometry:

Radius of tracking system

Vertex Detector

• Barrel: 3 double layers Pixels with 3 micrometer resolution
  • Rin = 30.825 mm
  • Rout= 60 mm
  • MaxZ= 130 mm
• Endcap: Double layers where petals are arranged in a "Spiral" geometry. Pixels with 3 micrometer resolution
  • Min z: 160 mm
  • Max z: 298.8 mm
  • Min r: 33 mm
  • Max r: 102 mm
  • Dz between first and last sensitive layer: 136 mm
  • Petal angle: 45 degree

Silicon Tracker:

Technology not decided yet, should be either "large" pixels or short strips, or a combination of the two. Will comprise an “Inner Tracker” and an “Outer Tracker” in the barrel.

• Rin=61 mm
• Rout=1500 mm
• MaxZ = 2345 mm

Length of magnetic field coverage

• Solenoid:
  • Rin = 3440 mm
  • Rout = 4304 mm
  • MaxZ = 4129 mm

Magnetic filed intensity:

• • Field on central axis = 4 T

Tracking coverage in eta/theta,

Eta/phi granularity of hcal and ecal

• ECal: 5.1 mmx 5.1 mm cells (Silicon)
• HCAL: 30 mm x 30 mm cells (Scintillator)

Momentum resolution formula for charged tracks

energy resolution for electrons and photons

momentum resolution for muons

impact parameters resolution

Where and (Design CDR)

identification and mis-idenfication efficiency for particles: muons, electron, pions, kaons, ...

MUONS: CDR page 150 Isolated muons: efficiency: ~100% for theta>10 deg, purity ~100% Muons in jets: efficiency ~90 & for theta>10 deg, purity ~95%

neutral hadron energy fraction lost in hcal and ecal (sum =1)

energy resolution formula for jets

b-tag efficiency (optional)

-- NikiforosNikiforou - 2015-05-06