Measuring Emittance with the MICE Trackers Submitted by Adam Dobbs on 30 Apr 2012 at 21:59 Id: 77 Last modification: 30 Apr 2012 21:59 Contribution type: Poster Content The international Muon Ionization Cooling Experiment (MICE) is designed to provide a proof-of-principle demonstration of ionization cooling, for application in a future Neutrino Factory or Muon Collider facility. Ionization cooling involves the reduction of the phase space of a muon beam via a series of absorbers, with subsequent re-acceleration in the longitudinal direction provided by RF cavities. Specifically MICE is required to take a muon beam of tunable emittance between 140 MeV/c and 240 MeV/c, and reduce the emittance by ~10%, measured before and after cooling with an absolute precision of 0.1%. The emittance measurement is provided by two scintillating fiber trackers, one at either end of the cooling channel. Each tracker is surrounded by a 5 T superconducting solenoid. This poster describes the design and construction of the MICE trackers and their in use in the MICE emittance measurement. Summary Description of the design of the MICE scintillating fiber trackers and their use in measuring emittance.