1. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
2. Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, U.K.
3. Department of Materials, Imperial College London, South Kensington, Exhibition Road, London SW7 2AZ, U.K.
4. Scientific Computing Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX, U.K.
5. Nottingham Trent University, Clifton Campus, 211 Erasmus Darwin Building, Nottingham NG11 8NS, U.K.
6. Institut Laue Langevin, 6 rue Jules Horowitz 38042, Grenoble Cedex 9, France
7. Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K.