  We present a model of supersymmetry breaking mediated through a small extra
dimension. Standard model matter multiplets and a supersymmetry-breaking (or
``hidden'') sector are confined to opposite four-dimensional boundaries while
gauge multiplets live in the bulk. The hidden sector does not contain a singlet
and the dominant contribution to gaugino masses is via anomaly-mediated
supersymmetry breaking. Scalar masses get contributions from both anomaly
mediation and a tiny hard breaking of supersymmetry by operators on the
hidden-sector boundary. These operators contribute to scalar masses at one loop
and in most of parameter space, their contribution dominates. Thus it is easy
to make all squared scalar masses positive. As no additional fields or
symmetries are required below the Planck scale, we consider this the simplest
working model of anomaly mediation. The gaugino spectrum is left untouched and
the phenomenology of the model is roughly similar to anomaly mediated
supersymmetry breaking with a universal scalar mass added. We identify the main
differences in the spectrum between this model and other approaches. We also
discuss mechanisms for generating the mu term and constraints on additional
bulk fields.
