FABRICATION OF CHOPPER FOR PARTICLE BEAM INSTRUMENT
摘要
A technique for providing a grid for a gate such as utilized in gating a stream of ions or other particles in a spectrometer instrument. The grid of wires may, for example, be a so-called Bradbury-Nielson Gate that consists of a set of two electrically isolated sets of equally spaced wires that lie substantially in the same plane and alternate in potential. The method utilized to provide is to first fabricate a frame of an insulating substrate having a hole and depositing metal film patterns such that conductive portions are formed on either side of the hole. Conductive portions on either side form a series of terminating pads on the portion of the substrate closest to the hole and a bus bar. Grid wires are then formed by stretching a section of wire with desired constant tension across the hole and bonding the ends of the wire to a respective one of the pads on one side and bus bar on the other side. The method provides a rapid, inexpensive way to fabricate such modulating devices.
申请公布号
WO02101779(A2)
申请公布日期
2002.12.19
申请号
WO2002US18182
申请日期
2002.06.07
申请人
UNIVERSITY OF MAINE;STILLWATER SCIENTIFIC INSTRUMENTS
发明人
LECURSI, N;LEGORE, L., J.;JACKSON, R., H.;CROTHERS, C., B.;KLEBAN, P.;FREDERICK, BRIAN, G.