US 2014/0231657 A1 · RADIATION DETECTOR DEVICE FOR REJECTING AND EXCLUDING INCOMPLETE CHARGE COLLECTION EVENTS

Abstract

A radiation detector device is provided that is capable of distinguishing between full charge collection (FCC) events and incomplete charge collection (ICC) events based upon a correlation value comparison algorithm that compares correlation values calculated for individually sensed radiation detection events with a calibrated FCC event correlation function. The calibrated FCC event correlation function serves as a reference curve utilized by a correlation value comparison algorithm to determine whether a sensed radiation detection event fits the profile of the FCC event correlation function within the noise tolerances of the radiation detector device. If the radiation detection event is determined to be an ICC event, then the spectrum for the ICC event is rejected and excluded from inclusion in the radiation detector device spectral analyses. The radiation detector device also can calculate a performance factor to determine the efficacy of distinguishing between FCC and ICC events.

Claims61

Dependent claims

A radiation detector device, comprising:

at least one radiation detector element configured to generate electrical charges in response to radiation interacting with a radiation detector material;
at least one anode connected to the at least one radiation detector element and configured to output electrical signals from the radiation detector material corresponding to generated electrical charges;
at least one shared cathode connected to one or more of the at least one radiation detector elements and configured to output electrical signals from the radiation detector material corresponding to generated electrical charges;
a specialized radiation detector chip (SRDC) connected to the at least one anode and connected to the at least one shared cathode, wherein the SRDC is configured to receive the electrical signals, sense parameters of the received electrical signals, and output the sensed electrical signal parameters;
a non-transitory computer readable storage medium storing a full charge collection (FCC) event correlation function and instructions for performing a correlation value comparison algorithm utilizing the FCC event correlation function as a reference curve to determine whether correlation values calculated for the sensed electrical signal parameters fit a FCC event correlation function profile;
and
a processor connected to the non-transitory computer readable storage medium and connected to the SRDC, wherein the processor is configured to receive the sensed electrical signal parameters, calculate correlation values for the sensed electrical signal parameters, and execute the instructions for performing the correlation value comparison algorithm.

4 more elements

A method of evaluating charge collection events in a radiation detector device, the method including:

generating electrical charges in at least one radiation detector element in response to radiation interacting with a detector material;
outputting electrical signals corresponding to the generated electrical charges from the at least one radiation detector element by at least one anode connected to the at least one radiation detector element;
outputting electrical signals corresponding to the generated electrical charges from the at least one radiation detector element by at least one shared cathode connected to one or more of the at least one radiation detector elements;
receiving the electrical signals by a specialized radiation detector chip (SRDC) connected to the at least one anode and connected to the at least one shared cathode;
sensing parameters of the received electrical signals by the SRDC;
outputting the sensed electrical signal parameters by the SRDC;
receiving at a processor connected to the SRDC the sensed electrical signal parameters;
calculating by the processor correlation values for the sensed electrical signal parameters;
and
executing by the processor, based on instructions for performing a correlation value comparison algorithm and a full charge collection (FCC) event correlation function stored in a non-transitory computer readable storage medium connected to the processor, the correlation value comparison algorithm utilizing the FCC event correlation function as a reference curve to determine whether the correlation values fit a FCC event correlation function profile.

7 more elements

Dependencies are inferred from the claim text.

Radiation detector device for rejecting and excluding incomplete charge collection events

Life of this patent

Radiation detector device for rejecting and excluding incomplete charge collection events

Life of this patent

Abstract

Claims61