Title:
FOCAL PLANE DETECTOR ASSEMBLY OF A MASS SPECTROMETER
Document Type and Number:
WIPO Patent Application WO2005088672
Kind Code:
A3
Abstract:
A focal plane detector assembly of a mass spectrometer includes an ion detector configured to detect ions crossing a focal plane of the spectrometer and an electrically conductive mesh lying in a plane parallel to the focal plane, positioned such that ions exiting a magnet of the mass spectrometer pass through the mesh before contacting the ion detector. The mesh is maintained at a low voltage potential, relative to a circuit ground, which shields ions passing through the magnet from high voltage charges from other devices, such as microchannel plate electron multipliers. The mesh may be mounted directly to the magnet or positioned some distance away. The detector array may include any suitable device, including a faraday cup detector array, a strip charge detector array, or a CCD detector array.
Inventors:
SCHEIDEMANN ADI A (CH)
KIBELKA GOTTFRIED P G (US)
LONG CLARE R (US)
DASSEL MARK W (US)
VASSILIOU EUSTATHIOS (US)
KIBELKA GOTTFRIED P G (US)
LONG CLARE R (US)
DASSEL MARK W (US)
VASSILIOU EUSTATHIOS (US)
Application Number:
PCT/US2005/007128
Publication Date:
August 10, 2006
Filing Date:
March 04, 2005
Export Citation:
Assignee:
OI CORP (US)
SCHEIDEMANN ADI A (CH)
KIBELKA GOTTFRIED P G (US)
LONG CLARE R (US)
DASSEL MARK W (US)
VASSILIOU EUSTATHIOS (US)
SCHEIDEMANN ADI A (CH)
KIBELKA GOTTFRIED P G (US)
LONG CLARE R (US)
DASSEL MARK W (US)
VASSILIOU EUSTATHIOS (US)
International Classes:
H01J49/32; G01N30/72; H01J43/00; H01J49/04; H01J49/48
Domestic Patent References:
| WO1999016103A1 | 1999-04-01 |
Foreign References:
| US5801380A | 1998-09-01 | |||
| US4672204A | 1987-06-09 | |||
| US6051831A | 2000-04-18 |
Other References:
WIZA JOSEPH LADISLAS: "MICROCHANNEL PLATE DETECTORS", NUCL INSTRUM METHODS JUN 1- 15 1979, vol. 162, no. 1-3 part 2, 1 June 1979 (1979-06-01), pages 587 - 601, XP002379065
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