The IDEA detector is general purpose detector designed for experiments at future e+e– colliders (FCCee and CepC). It is a new, innovative, and possibly more cost-effective concept of particle detector.
Components
- Silicon vertex detector
- Short-drift, ultra-light wire chamber
- Dual-readout calorimeter
- Thin and light solenoid coil inside calorimeter system
- Muon system made of 3 layers located inside the return joke
Vertex detector
Inspired by ALICE Internal Tracking System, it is based on the Monolithic Active Pixel Sensors (MAPS) technology, which allows for high precision tracking.
5 MAPS layers are foreseen: three inner layers (R = 1.7 – 2.3 – 3.1 cm) with 20×20 μm2 pixels, and 2 outer layers (R = 32 – 34 cm) with 50×100 μm2 pixels.
The expected performances are :
- point resolution of ~3 μm
- 100% efficiency
- Extremely low fake hit rate
Drift chamber
The Drift Chamber is a full stereo, low mass, unique volume, co-axial to the 2 T solenoidal field.
The special feature of this detector is its high transparency: the total amount of material in radial direction, towards the barrel calorimeter, is of the order of 1.6% X0, whereas, in the forward and backward directions, this is equivalent to about 5.0% X0. The drift chamber is 400 cm long, with an inner radius of 35 cm and an outer one of 200 cm. The sensitive volume comprises 56 448 squared drift cells.
Dual-readout calorimeter
The variation of the e.m. fraction is intrinsic to hadronic showers. The Dual-Readout technique addresses this problems extracting fem by the simultaneous measurement of Cherenkov and scintillation light produced by the shower particles. The results obtained so far with prototypes, support the statement that fiber-sampling Dual-Readout calorimeters may reach resolutions of the order of 10%/√E or better for em showers and around 30%/√E for hadronic showers, together with particle ID capabilities.
Muon system
Muon detection systems in large HEP experiments need to identify muons and measure their momentum with accurate precision. The μ-Rwell technology provides good tracking efficiency and both precise space resolution on the coordinates of a muon track (about 200-300 μm) and good time resolution.
μ-Rwell technology
The μ-RWELL is a compact single amplification stage intrinsically spark protected MPGD. It is composed of only two elements: the drift cathode and the μ-RWELL PCB, which merges, in a unique structure, a WELL patterned matrix as single amplification stage, a resistive layer and a rigid PCB readout electrode.
The best option for equipping very large surfaces of the muon detector is using tiles of μ-RWELL detectors of a size 50 × 50 cm2 to realize three or four detector stations. Each station could be equipped with a couple of layers of μ-RWELL detectors. This would make the whole muon system very modular with components which can be mass produced by industry.
