A novel wire scanner has been developed with applications at linear acceler
ators where small beam spots or high intensities would otherwise destroy wi
res. A pattern of wires is supported on a thin membrane and remains in plac
e even when punctured by the beam. Many scans can be made before the materi
al needs to be replaced. Tests of the principle have been carried out at th
e Final Focus Test Beam at SLAG. (C) 1999 Elsevier Science B.V. All rights
reserved.