Brookhaven Science Associates, Lcc

Endicott Interconnect Technologies, Inc.

Gianluigi Degeronimo

Paul O'Connor

Joseph Grosholz, Jr

A radiation detection and counting system () includes a radiation detector element () for outputting a signal related to an energy of a radiation event received thereby and an amplifier () for amplifying the signal output by the detector element (). A gain equalization circuit () adjusts the gain of the amplified output signal and a plurality of comparators () compare the gain adjusted amplified output signal to a like plurality of different valued threshold signals that are independently adjustable of each other A plurality of counters () is operative whereupon only the counter associated with the one comparator () that changes state in response to the peak of the gain adjusted amplified output signal exceeding the value of the trigger threshold signal thereof is incremented. A storage () stores the incremented value of each counter () accumulated over a sample time interval and data output logic circuit () transfers the stored accumulated counts out of the storage.

Multi-window signal processing electronics architecture for photon counting with multi-element sensors

A device and method for measuring a depth of interaction of an ionizing event and improving resolution of a co-planar grid sensor (CPG) are provided. A time-of-occurrence is measured using a comparator to time the leading edge of the event pulse from the non-collecting or collecting grid. A difference signal between the grid signals obtained with a differential amplifier includes a pulse with a leading edge occurring at the time-of-detection, measured with another comparator. A timing difference between comparator outputs corresponds to the depth of interaction, calculated using a processor, which in turn weights the difference grid signal to improve spectral resolution of a CPG sensor. The device, which includes channels for grid inputs, may be integrated into an Application Specific Integrated Circuit. The combination of the device and sensor is included. An improved high-resolution CPG is provided, e.g., a gamma-ray Cadmium Zinc Telluride CPG sensor operating at room temperature.

Device and method for the measurement of depth of interaction using co-planar electrodes

An apparatus and method for analog-to-digital conversion and peak detection includes at least one stage, which includes a first switch, second switch, current source or capacitor, and discriminator. The discriminator changes state in response to a current or charge associated with the input signal exceeding a threshold, thereby indicating whether the current or charge associated with the input signal is greater than the threshold. The input signal includes a peak or a charge, and the converter includes a peak or charge detect mode in which a state of the switch is retained in response to a decrease in the current or charge associated with the input signal. The state of the switch represents at least a portion of a value of the peak or of the charge.

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Syosset, NY, United States of America

Gianluigi Degeronimo