Method and system for increasing radiation sensitivity in semiconductor detectors

A system, comprising:

• a plurality of semiconductor crystals, each of the semiconductor crystals having a respective cross-strip electrical pattern with a plurality of anode channels and a plurality of cathode channels;
• a processing system including a processor;
• and
• a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
• measuring in a first one of the semiconductor crystals one or more anode channels and one or more cathode channels and measuring in a second one of the semiconductor crystals one or more anode channels and one or more cathode channels;
• determining whether an energy of a sum of the one or more anode channels of the first semiconductor crystal is within an energy window;
• determining whether an energy of a sum of the one or more anode channels of the second semiconductor crystal is within the energy window;
• responsive to the energy of the sum of the one or more anode channels of the first semiconductor crystal being within the energy window and the energy of the sum of the one or more anode channels of the second semiconductor crystal being within the energy window:
• separating the one or more anode channels and the one or more cathode channels of the first semiconductor crystal into first combinations of anode-cathode channel pairs;
• separating the one or more anode channels and the one or more cathode channels of the second semiconductor crystal into second combinations of anode-cathode channel pairs;
• creating a plurality of sequences of interaction points from the first combinations of anode-cathode channel pairs of the first semiconductor crystal;
• creating a plurality of sequences of interaction points from the second combinations of anode-cathode channel pairs of the second semiconductor crystal;
• for each of the plurality of sequences in the first semiconductor crystal, determining a respective direction difference angle via use of each of the plurality of sequences of the second semiconductor crystal;
• determining from among the direction difference angles a determined one of the direction difference angles that has a smallest value;
• and
• setting, as initial interaction positions of photons, selected ones of the anode-cathode channel pairs that correspond to a sequence that has the determined direction difference angle that has the smallest value.

A non-transitory machine-readable storage medium comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, the operations comprising:

• measuring in a first crystal two or more channels and measuring in a second crystal one or more channels;
• determining whether an energy of a sum of the two or more channels of the first crystal is within an energy window;
• determining whether an energy of a sum of the one or more channels of the second crystal is within the energy window;
• responsive to the energy of the sum of the two or more channels of the first crystal being within the energy window and the energy of the sum of the one or more channels of the second crystal being within the energy window:
• creating a plurality of sequences of interaction points from the two or more channels of the first crystal;
• creating one or more sequences of interaction points from the one or more channels of the second crystal;
• for each of the plurality of sequences in the first crystal, determining a respective direction difference angle via use of each of the one or more sequences of the second crystal;
• determining from among the direction difference angles a determined one of the direction difference angles that has a smallest value;
• and
• setting, as initial interaction positions of photons, selected ones of the channels that correspond to a sequence that has the smallest direction difference angle.