Radiant energy – With charged particle beam deflection or focussing – With detector
Reexamination Certificate
2006-10-19
2009-02-03
Wells, Nikita (Department: 2881)
Radiant energy
With charged particle beam deflection or focussing
With detector
C250S287000, C250S286000, C250S251000, C250S309000
Reexamination Certificate
active
07485872
ABSTRACT:
A detector for detecting a particle is disclosed. The detector includes a charge emitter that emits a charge in response to receipt of the particle, an anode for receiving the emitted charge, and electronics for determining whether there is received charge on the anode. The anode may include a pad for receiving the charge and a plurality of conduits (such as transmission lines) for transmitting the charge to the electronics. The anode may be designed to reduce the variance in the path length from the pad of the anode to the electronics. For example, the plurality of conduits in the anode may be constructed such that the transit time of the charge from the pad varies less than a predetermined time. Further, a capacitive element may be included in the detector in order to capacitively couple with the charge emitter. The capacitive element may include a grid that is in the same layer as the pads of the anode in order to provide a short and less variable circuit return path to the charge emitter.
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Credo Tim
Frisch Henry J.
Sanders Harold
Tang Fukun
Brinks Hofer Gilson & Lione
The University of Chicago
Wells Nikita
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