The ATLAS Detector
Diameter: 25m
Length: 46m
Barrel Toroid Length: 26m
Overall weight: 7000 tonnes
~100 million electronic channels
3000 km of cables
Calorimeters
Measure the energies carried by the particles
Liquid Argon (LAr) Calorimeter
- Barrel 6.4 m long, 53 cm thick,
110,000 channels.
- Works with Liquid Argon at -183º C
- LAr endcap consists of the forward
calorimeter, electromagnetic (EM) and
hadronic endcaps.
- EM endcaps each have thickness
0.632 m and radius 2.077 m.
- Hadronic endcaps consist of two
wheels of thickness 0.8 m and 1.0 m
with radius 2.09 m.
- Forward calorimeter has three
modules of radius 0.455 m and
thickness 0.450 m each.
Tile Calorimeter (TileCal)
- Barrel made of 64 wedges,
each 5.6 m long and 20 tonnes.
- Each Endcap has 64 wedges, each
2.6 m long.
- 500,000 plastic scintillator tiles.
Muon System
Identfies and measures the momenta of muons
Thin Gap Chambers
For triggering and 2nd coordinate
measurement (non-bending direction) at ends of detector.
Resistive Plate Chambers
For triggering and 2nd coordinate
measurement in central region.
- 380,000 channels
- Electric Field 5,000 V/mm
Monitored Drift Tubes
Measure curves of tracks.
- 1,171 chambers with total 354,240
tubes (3 cm diameter, 0.85-6.5 m long).
- Tube resolution 80 μm
Cathode Strip Chambers
Measure precision coordinates at ends of detector.
- 70,000 channels
- Resolution 60 μm
|
