  Due to the Helium-3 crisis, alternatives to the standard neutron detection
techniques are becoming urgent. In addition, the instruments of the European
Spallation Source (ESS) require advances in the state of the art of neutron
detection. The instruments need detectors with excellent neutron detection
efficiency, high-rate capabilities and unprecedented spatial resolution. The
Macromolecular Crystallography instrument (NMX) requires a position resolution
in the order of 200 um over a wide angular range of incoming neutrons. Solid
converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are
proposed to meet the new requirements. Charged particles rising from the
neutron capture have usually ranges larger than several millimetres in gas.
This is apparently in contrast with the requirements for the position
resolution. In this paper, we present an analysis technique, new in the field
of neutron detection, based on the Time Projection Chamber (TPC) concept. Using
a standard Single-GEM with the cathode coated with 10B4C, we extract the
neutron interaction point with a resolution of better than sigma = 200 um.
