Compact scintillation detector

A device

• a scintillator;
• a photon detector at least partially enclosed by the scintillator;
• at least one reflector at least partially enclosing the scintillator and configured to direct photons emitted by the scintillator to the photon detector;
• and
• an integrating sphere having a concave surface oriented toward (a) the scintillator and (b) the photon detector.

A device comprising:

• a segmented scintillator;
• a plurality of photon detectors at least partially enclosed by the segmented scintillator;
• and
• at least one reflector at least partially enclosing the segmented scintillator and configured to direct photons emitted by the segmented scintillator to at least one of the plurality of photon detectors;
• wherein, for each segment of the segmented scintillator, a photon detector of the plurality of photon detectors is configured to read out that segment, and at least one of the plurality of photon detectors is substantially enclosed within the space between scintillator segments.

An oilfield wellbore device comprising:

• an oilfield string;
• at least one scintillation detection device on the oilfield string, the scintillation detection device comprising:
• a scintillator having an inner surface and an outer surface,
• a photon detector at least partially enclosed by the scintillator, and
• at least one reflector extending inside the inner surface of the scintillator and extending outside the outer surface of the scintillator thereby at least partially enclosing the scintillator and the at least one reflector is configured to direct photons emitted by the scintillator to the photon detector;
• and
• a pressure housing enclosing the at least one scintillation detection device.