[1] Rutherford Appleton Lab, ISIS Facil, Chilton, Oxon, England
[2] Rutherford Appleton Lab, Computat Sci & Engn Dept, Chilton, Oxon, England
[3] DESY, HASYLAB, Hamburg, Germany
[4] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[5] NRC, Chalk River, ON, Canada
[6] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON, Canada