  The Compact Linear Collider (CLIC) is a concept for a future linear collider
that would provide e$^+$e$^-$ collisions at up to 3 TeV. The physics aims
require a detector system with excellent jet energy and track momentum
resolution, highly efficient flavour tagging and lepton identification
capabilities, full geometrical coverage extending to low polar angles, and
timing information of the order of nanoseconds to reject beam-induced
background. To deal with these requirements, an extensive R&D programme is in
place to overcome current technological limits. The CLIC detector concept
includes a low-mass all-silicon vertex and tracking detector system and
fine-grained calorimeters designed for particle flow analysis techniques,
surrounded by a 4 T solenoid magnet. An overview of the requirements and design
optimisations for the CLIC detector concept is presented.
