AN ANALOG SIGNAL MEASUREMENT SYSTEM AND GAMMA RAY DETECTOR WITH TARGETED AUTOMATED GAMMA SPECTROSCOPY

• Main Authors: CLARKE, CHRISTOPHER JAMES MCINNIS, MCFADDEN, ROBERT CASSIN
• Format: Patent
• Language: English; French
• Published: 22.10.2009
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; TARIFF METERING APPARATUS; TESTING

An analog signal measurement system and a gamma ray detector with targeted automated gamma spectroscopy for gamma radiation surveillance system are disclosed. The analog signal measurement system has dynamically programmable lower and upper level discriminators for measuring an analog signal thereagainst, and logic devices for receiving input from the discriminators to generate digital signals. The gamma ray detector comprises a gamma ray detector for converting a gamma ray photon into an analog pulse, and a single channel analyzer or the analog signal measurement system. The gamma ray detector further includes dynamically programmable lower and upper level discriminators for converting the analog pulse generated from the gamma ray detector into a digital signal, a resettable programmatically controlled counter for counting the digital signal and a computing device that controls the lower and upper level discriminators for defining a gamma ray energy window and measures gamma count rate for that energy window.