sector[ntrTRD] = Int_t(trackRef->Alpha()/AliTRDgeometry::GetAlpha());
AliDebug(10, Form(" [%2d] x[%7.2f] y[%7.2f] z[%7.2f] Sec[%2d]", itr, trackRef->LocalX(), trackRef->LocalY(), trackRef->Z(), sector[ntrTRD]));
if(x < xmin){
sector[ntrTRD] = Int_t(trackRef->Alpha()/AliTRDgeometry::GetAlpha());
AliDebug(10, Form(" [%2d] x[%7.2f] y[%7.2f] z[%7.2f] Sec[%2d]", itr, trackRef->LocalX(), trackRef->LocalY(), trackRef->Z(), sector[ntrTRD]));
if(x < xmin){