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11.发明申请公开(公告)号：WO2020121167A1
公开(公告)日：2020-06-18
申请号：PCT/IB2019/060574
申请日：2019-12-09
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： DZIEKONSKI, Eric Thomas
Abstract: An MCP detector (620) receives an ion packet along an ion path (601) of mass spectrometer through a hollow central cylindrical tube (621) of the MCP detector. The MCP detector includes coaxial rings (622) of MCPs surrounding the hollow central cylindrical tube. The MCP detector transmits the ion packet along the ion path to an ELIT (610) through holes in the center of a first set of reflectron plates (613) of the ELIT to oscillate the ion packet between the first set and a second set of reflectron plates (614) of the ELIT. The ELIT transmits the oscillated ion packet back to the MCP detector along the ion path through the holes of the first set. The MCP detector detects ions of the oscillated ion packet that are radially deflected from the ion path using the rings of MCPs. The MCP detector allows ions to be transmitted to or from either port of the ELIT.
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公开(公告)号：WO2019229599A1
公开(公告)日：2019-12-05
申请号：PCT/IB2019/054295
申请日：2019-05-23
Applicant: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Inventor： DZIEKONSKI, Eric Thomas
Abstract: A mass spectrometer is operated to simultaneously measure precursor and product ion data over a number of acquisitions. For each acquisition, the following steps are performed. Ion transfer optics inject ions from an ion beam into an ELIT causing the ions to oscillate axially between two electric fields produced by two the sets of reflectrons. The ELIT measures a time domain image current of the oscillating ions from ion injection to a total acquisition time, Tacq1 , and fragments the oscillating ions at one or both turning points of the oscillating ions adding product ions to the oscillating ions. The fragmentation is performed at a delay time relative to the ion injection that is increased by a time increment in each subsequent acquisition making the fragmentation dependent on ion position. The measured time domain image current is stored as a row or column of a two-dimensional matrix.
