公开(公告)号：EP3876262A1

公开(公告)日：2021-09-08

申请号：EP21159901.4

申请日：2021-03-01

申请人： Thermo Finnigan LLC

发明人： OSER, Harald ,  MATHUR, Raman

IPC分类号： H01J49/42 ,  H01J49/06

摘要： A first multipole assembly includes a first plurality of rod electrodes arranged about an axis and configured to confine ions radially about the axis. A second multipole assembly disposed adjacent to the first multipole assembly includes a second plurality of rod electrodes arranged about the axis and configured to confine the ions radially about the axis. An orientation of the first multipole assembly about the axis is rotationally offset relative to an orientation of the second multipole assembly about the axis.

公开(公告)号：EP3528278A1

公开(公告)日：2019-08-21

申请号：EP19168726.8

申请日：2011-03-31

申请人： Thermo Finnigan LLC

发明人： KOVTOUN, Viatcheslav V. ,  MATHUR, Raman

IPC分类号： H01J43/30 ,  G01T1/16 ,  H01J43/18 ,  H01J49/02

摘要： A method of operating a particle detector is introduced, the method comprising the steps of receiving incident particles that represent at least one input signal in the particle detector, emitting electrons from a first dynode in response to receiving the incident particles, directing the emitted electrons to a plurality of additional dynodes arranged in a cascading relationship, measuring a detection current generated at an intermediate dynode, and regulating a gain to at elast one dynode positioned downstream of the intermediate dynode based on the measured detection current.

公开(公告)号：EP2553708B1

公开(公告)日：2019-05-22

申请号：EP11714190.3

申请日：2011-03-31

申请人： Thermo Finnigan LLC

发明人： KOVTOUN, Viatcheslav, V. ,  MATHUR, Raman

IPC分类号： H01J49/02 ,  H01J43/30 ,  G01T1/16 ,  H01J40/14 ,  H01J43/04 ,  H01J43/18 ,  H01J43/24

公开(公告)号：EP2553708A1

公开(公告)日：2013-02-06

申请号：EP11714190.3

申请日：2011-03-31

申请人： Thermo Finnigan LLC

发明人： KOVTOUN, Viatcheslav, V. ,  MATHUR, Raman

IPC分类号： H01J43/30

CPC分类号： H01J40/14 ,  G01T1/16 ,  H01J43/04 ,  H01J43/18 ,  H01J43/24 ,  H01J43/30 ,  H01J49/025

摘要： A novel electron multiplier that regulates in real time the gain of downstream dynodes as the instrument receives input signals is introduced. In particular, the methods, electron multiplier structures, and coupled control circuits of the present invention enable a resultant on the fly control signal to be generated upon receiving a predetermined threshold detection signal so as to enable the voltage regulation of one or more downstream dynodes near the output of the device. Accordingly, such a novel design, as presented herein, prevents the dynodes near the output of the instrument from being exposed to deleterious current pulses that can accelerate the aging process of the dynode structures that are essential to the device.