Abstract
T2K (Tokai to Kamioka) is a 295km long-baseline experiment in Japan, which is due to start taking commissioning data late in 2009. It is designed to measure muon-neutrino oscillations to other flavours. This will enable the measurement of some of the components of the MNSP mixing matrix. One of the UK's main contributions is the construction of an Electromagnetic Calorimeter (ECal) for the near detector, ND280, situated 280m downstream from the neutrino production target. This poster focuses on the Downstream ECal. Construction of this key module is due to begin in October 2007. It is then to be packaged and shipped to CERN in Spring 2009 for calibration tests and it is the aim that it will be installed in Tokai later in 2009. Lancaster University is responsible for the construction of the DS-ECal.