Z Amato (STFC Rutherford Appleton Lab.), S Gärtner (STFC Rutherford Appleton Lab.), P Ghesquière (Department of Physical Sciences), TF Headen (STFC Rutherford Appleton Lab.), TGA Youngs (STFC Rutherford Appleton Lab.), DT Bowron (STFC Rutherford Appleton Lab.), LP Cavalcanti (STFC Rutherford Appleton Lab.), SE Rogers (STFC Rutherford Appleton Lab.), N Pascual (Department of Physical Sciences), O Auriacombe (Department of Physical Sciences), E Daly (Department of Physical Sciences), RE Hamp (Department of Physical Sciences), CR Hill (Department of Physical Sciences), TP Ragesh Kumar (Department of Physical Sciences), HJ Fraser (Department of Physical Sciences)