The Electron-Muon Ranger (EMR) is a totally active scintillator

detector (TASD) to be installed in the muon beam of the Muon

Ionization Cooling Experiment (MICE) - the R&D project for the future

neutrino factory. The EMR is made of 48 intersecting layers. Each

layer consists of 59 triangular scintillator bars. Each bar

incorporates a wave-length shifting (WLS) fiber that collects light

emitted by the scintillator. At the faces of each bar the WLS fiber is

coupled to a light guide that transfers light to a PMT. Scintillatior

bars are read out at both sides, one side is connected to a

single-channel PMT and the other - to the 64-channel PMT. The

granularity of the detector allows us to identify tracks and measure

particle ranges and shower shapes. The EMR will be installed at the

very end of the MICE cooling channel and will stop and measure all

outgoing particles. Currently it is being built at the University of

Geneva and it is planned to install it in MICE by the end of 2012.