Title:
FABRICATION OF CHOPPER FOR PARTICLE BEAM INSTRUMENT
Document Type and Number:
WIPO Patent Application WO2002101779
Kind Code:
A3
Abstract:
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.
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Inventors:
LECURSI NICHOLAS
LEGORE LAWRENCE J
JACKSON ROBERT H III
CROTHERS C BRONSON H
KLEBAN PETER H
FREDERICK BRIAN G
LEGORE LAWRENCE J
JACKSON ROBERT H III
CROTHERS C BRONSON H
KLEBAN PETER H
FREDERICK BRIAN G
Application Number:
PCT/US2002/018182
Publication Date:
October 16, 2003
Filing Date:
June 07, 2002
Export Citation:
Assignee:
UNIV MAINE (US)
STILLWATER SCIENT INSTR (US)
STILLWATER SCIENT INSTR (US)
International Classes:
H01J49/44; G01N23/05; G21K1/087; H01J49/02; H01J49/04; H01J49/06; H01J49/40; (IPC1-7): H01J27/02; H01J37/08; H01J49/40; G01N27/64
Foreign References:
| US4150319A | 1979-04-17 | |||
| US5465480A | 1995-11-14 |
Other References:
HONKANEN A ET AL: "Gas-silicon detector telescope for charged particle spectroscopy", NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, SECTION - A: ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, NORTH-HOLLAND PUBLISHING COMPANY. AMSTERDAM, NL, vol. 395, no. 2, 11 August 1997 (1997-08-11), pages 217 - 225, XP004097913, ISSN: 0168-9002
P. VLASAK: "An interleaved comb ion deflection gate for m/z selection in time-of-flight mass spectrometry.", REVIEW OF SCIENTIFIC INSTRUMENTS., vol. 67, no. 1, January 1996 (1996-01-01), AMERICAN INSTITUTE OF PHYSICS. NEW YORK., US, pages 68 - 72, XP002233167, ISSN: 0034-6748
P. VLASAK: "An interleaved comb ion deflection gate for m/z selection in time-of-flight mass spectrometry.", REVIEW OF SCIENTIFIC INSTRUMENTS., vol. 67, no. 1, January 1996 (1996-01-01), AMERICAN INSTITUTE OF PHYSICS. NEW YORK., US, pages 68 - 72, XP002233167, ISSN: 0034-6748
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