  Computing the gluon component of momentum in the nucleon is a difficult and
computationally expensive problem, as the matrix element involves a
quark-line-disconnected gluon operator which suffers from ultra-violet
fluctuations. But also necessary for a successful determination is the
non-perturbative renormalisation of this operator. As a first step we
investigate here this renormalisation in the RI-MOM scheme. Using quenched QCD
as an example, a statistical signal is obtained in a direct calculation using
an adaption of the Feynman-Hellmann technique.
