Description
The T2K collaboration is preparing a rise of the beam intensity to increase the exposure aimed at establishing leptonic CP violation at 3 $\sigma$ level for a significant fraction of the possible $\delta_{CP}$ values. The near detector ND280 upgrade could reduce the overall statistical and systematic uncertainties at the appropriate level of better than 4%.
We have developed an innovative concept comprising a totally active Super-Fine-Grained-Detector (SuperFGD), 2 High Angle Time Projection Chamber (HA-TPC) and 6 TOF planes.
The HA-TPC will be used for 3D track reconstruction, momentum measurement and particle identification and will be equipped with 32 resistive bulk Micromegas (34x42 cm$^2$) covered by a 400 kOhm/square diamond like carbon foil to spread the charge over the pad plane, each pad being approximatively 1 cm$^2$.
The first resistive Micromegas modules have been tested in a test beam at CERN and at DESY. Results of these test beams will be shown in this talk.
