Device and method for two-dimensional detection of particles or electromagnetic radiation
AssigneesRoentdek Mandels GmbH, Oxford Nanascience Ltd.
InventorsOttmar Jagutzki, Horst Schmidt-Böcking, Volker Mergel, Alfred Cerezo, Min Huang
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Abstract
The invention concerns a device and method for two-dimensional imaging and timing of particles or electromagnetic radiation with improved pulse-pair resolution. A detector, e.g. a michrochannel plate detector with a delay-line anode with three or more conductive members is used as exemplary embodiment for achieving these requirements. Redundant position and timing information is used for uniquely determine the timing and position of two or more particles, even if they arrive at the same time at the detector.
Claims29
A device for detecting the position of a particle, the device comprising a delay-line anode (1) which includes at least first, second and third non-parallel conductive members (4a, 4b, 4c) for receiving electromagnetic pulses (30), each one of the conductive members (4a, 4b, 4c) forming a propagation line for electromagnetic signals and having a first and a second terminating end, at least some of which provide a propagated signal to an electronic analyser.
A method for detecting the spatial position of an electromagnetic pulse, which method comprises the following steps:
- (a) providing at least a first, second and a third conductive member (4a, 4b, 4c) having each a first and second terminating ends;
- (b) receiving an electromagnetic pulse on a portion (30) of said first, second and third conductive members (4a, 4b, 4c);
- (c) propagating said electromagnetic pulse on said conductive members (4a, 4b, 4c);
- and
- (d) determining the local position of said portion (30) of said first, second and third conductive members by measuring the the signal propagation time of said electromagnetic pulse on said first, second and third conductive members;
- and reconstructing the position of said portion (30) of said first, second and third conductive members from said signal propagation times.
A device for detecting the position of a particle, the device comprising a delay-line anode (1) which includes at least first, second and third non-parallel conductive members (4a, 4b, 4c) for receiving electromagnetic pulses (30), each one of the conductive members (4a, 4b, 4c) forming a propagation line for electromagnetic signals and having a first and a second terminating end, at least some of which provide a progagated signal to an electronic analyser, comprising a fluorescent screen in a form of a phosphor screen (50), disposed adjacent to the first, second and third non-parallel conductive members (4a, 4b, 4c).
A device for detecting the position of a particle, the device comprising a delay-line anode (1) which includes at least first, second and third non-parallel conductive members (4a, 4b, 4c) for receiving electromagnetic pulses (30), each one of the conductive members (4a, 4b, 4c) forming a propagation line for electromagnetic signals and having a first and a second terminating end, at least some of which provide a propagated signal to an electronic analyser, further comprising a high resistance layer located close to said first, second and third non-parallel conductive members (4a, 4b, 4c) for receiving an electromagnetic pulse.
A method for detecting the spatial position of an electromagnetic pulse, which method comprises the following steps:
- (a) providing at least a first, second and a third conductive member (4a, 4b, 4c) having each a first and second terminating ends;
- (b) receiving an electromagnetic pulse on a portion (30) of said first, second and third conductive members (4a, 4b, 4c);
- (c) propagating said electromagnetic pulse on said conductive members (4a, 4b, 4c);
- and
- (d) determining the local position of said portion (30) of said first, second and third conductive members by measuring the time of the arrival of said electromagnetic pulse at least one of said first and second terminating ends, wherein a fluorescent screen, in a form of a phosphor screen (50), is provided adjacent the first, second and third conductive members (4a, 4b, 4c).
A method for detecting the spatial position of an electromagnetic pulse, which method comprises the following steps:
- (a) providing at least a first, second and a third conductive member (4a, 4b, 4c) having each a first and second terminating ends;
- (b) receiving an electromagnetic pulse on said first, second and third conductive members (4a, 4b, 4c);
- (c) propagating said electromagnetic pulse on said conductive members (4a, 4b, 4c);
- and
- (d) determining the spatial position of said electromagnetic pulse by measuring the time of the arrival of said electromagnetic pulse at said first and second terminating ends of said first, second and third conductive members;
- and p1 (e) determining said spatial position by the time differences of the arrival of said electromagnetic pulse at said first and second terminating ends.
Dependencies are inferred from the claim text.