In conclusion, we have shown that, building on the expertise being acquired in
CHORUS, NOMAD and NOMAD-STAR, and on the ideas discussed within the neutrino community,
the techniques of emulsion and silicon can be
combined into a powerful detector to search for 
oscillation.
The experiment will exploit the direct detection of the 
decay topology with an
effective kinematical analysis of the candidate events.
Recent advances in fast automatic scanning
techniques obviate the need for the preselection of events resulting in an improved
efficiency for the detection of . This efficiency is improved further by the accurate
extrapolation of tracks to the emulsion provided by the silicon tracker.
The scanning of all events appears feasible in about two years from
the end of the data taking.
A careful study of the CERN accelerator chain capabilities has shown that a gain of a factor of two in protons on target per second can be achieved by the existing SPS Wide Band Beam.
Taking all these factors together the detector described in this Letter of Intent
could improve the limit to be set by CHORUS and NOMAD, if they do not observe any
oscillation candidates, by a factor of twenty reaching a sensitivity of
at high
and 
at maximal mixing.
Alternatively, if the present short base line experiments detect a few
candidates this detector
would observe about 100 events (with a background of only one event) which would
allow a more detailed study of the oscillation parameters.
In a scenario involving a small 
and a second
large 
proposed recently to explain the LSND, solar and
atmospheric results, this experiment would observe about 20 events with negligible background.
It should be pointed out that Cold-Hot Dark Matter scenarios greatly
favour a 
with a mass of a few eV.
If such a neutrino resulted in a of 
then this
experiment could detect it even if an oscillation strength as low as
prevailed.
We believe that the detector can be realized in three years. A technical run in the year 2001 can be envisaged, with data-taking in the years 2002-2004.