Editing Compact Linear Collider (section)

=== Detector Layers ===
CLICdet consists of four main layers of increasing radius: vertex and tracking system, [[calorimeters]], [[solenoid]] [[magnet]], and [[muon]] detector.<ref name="Alipour_CERN-2017" />
[[File:Compact Linear Collider CLICTD.tif|alt=|thumb|280x280px|A silicon pixel detector prototype for CLIC: "CLICTD" – a monolithic CMOS chip containing both sensor and readout, shown here on an electronics board during testing]]
The vertex and tracking system is located at the innermost region of CLICdet and aims to detect the position and momenta of particles with minimum adverse impact on their [[energy]] and [[trajectory]]. The vertex detector is cylindrical with three double layers of detector materials at increasing radii and has three segmented disks at each end in a spiral configuration to aid air flow cooling. These are assumed to be made of 25x25 μm2 silicon pixels of thickness 50&nbsp;μm, and the aim is to have a single point resolution of 3&nbsp;μm. The tracking system is made of [[silicon]] [[sensor]] modules expected to be 200&nbsp;μm thick.<ref name=Alipour_CERN-2017/>

The calorimeters surround the vertex and tracking system and aim to measure the energy of particles via absorption. The electromagnetic calorimeter (ECAL) consists of ~40 layers of silicon/tungsten in a sandwich structure; the hadronic calorimeter (HCAL) has 60 [[steel]] absorber plates with [[scintillation (physics)|scintillating]] material inserted in between.<ref name="Alipour_CERN-2017" />

These inner CLICdet layers are enclosed in a superconducting solenoid magnet with a field strength of 4 [[tesla (unit)|T]]. This magnetic field bends charged particles, allowing for [[momentum]] and [[electric charge|charge]] measurements. The magnet is then surrounded by an [[iron]] yoke which would contain large area detectors for muon identification.<ref name="Alipour_CERN-2017" />

The detector also has a luminosity calorimeter (LumiCal) to measure the products of [[Bhabha scattering]] events, a beam calorimeter to complete the ECAL coverage down to 10 {{not a typo|mrads}} polar angle, and an intra-train feedback system to counteract luminosity loss due to relative beam-beam offsets.<ref name="Alipour_CERN-2017" />