Radiation detection system, a radiation sensing unit, and methods of using the same

摘要

A radiation sensing unit for a radiation detection system can include a scintillator and a photosensor optically coupled to the scintillator. In an embodiment, the radiation detection system may provide an output signal to a particular radiation flux that is substantially temperature independent over a normal operating temperature range for the scintillator. The radiation sensing unit may further include a controllable radiation source configured to emit radiation and another photosensor coupled to controllable radiation source. A radiation detection system can include a radiation sensing unit and a control module that is coupled to the controllable radiation source and the photosensors. The control module may control the controllable radiation source and control a power supply coupled to the second photosensor in response to signals from the photosensors. In another aspect, a dynode tap from a photomultiplier tube can be used during calibration. Methods of using the foregoing are disclosed.

主权项

1. A radiation detection system comprising:
a controllable radiation source configured to emit a first radiation having a first radiation electromagnetic spectrum; a scintillator coupled to the controllable radiation source and configured to emit a second radiation, wherein the second radiation has a second electromagnetic radiation spectrum different from the first radiation electromagnetic spectrum; a first photosensor coupled to the controllable radiation source, wherein the first photosensor is more responsive to the first radiation as compared to the second radiation; a second photosensor optically coupled to the scintillator, wherein the second photosensor is more responsive to the second radiation as compared to the first radiation; and a control module coupled to the controllable radiation source and the first and second photosensors, wherein the control module is configured to:
control the controllable radiation source; andcontrol a power supply coupled to the second photosensor in response to at least signals from the first and second photosensors, or control an amplifier coupled to an output of the second photosensor.