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This work reports on the characterization of TlBr detectors for use in nuclear medicine. Several different detectors have been used to assess the potential performance of the material. A 12 mm thick detector with a Frisch collar has been used to achieve an energy resolution of 3.5% at 511 keV and 2.3% at 662 keV. A 0.4 mm thick detector biased at 200 V has been operated in coincidence with an LSO...
We present our recent development of high-temperature superconducting (HTS) Josephson terahertz (THz) detector arrays for imaging. The device is made of 10 Au thin-film antennae-coupled YBa2Cu3Ox−7 step-edge Josephson junction detectors. The design and characterization of the THz detector array, the development of multi-channel biasing and read-out electronics, and the system integration will be described.
In this paper we explore an adaptation of a high-temperature superconducting (HTS) Josephson R-SQUID (Resistive Superconducting Quantum Interference Device) heterodyne oscillator for the detection of terahertz (THz) radiation. This approach can be potentially applied for a large array detector readout in the frequency domain. The design concepts for the R-SQUID THz detector and early measurement results...
We describe here the realization of a terahertz (THz) imager based on a high-Tc superconducting (HTS) Josephson junction detector. The detector, made of an YBa2Cu3O7-x (YBCO) step-edge junction, is coupled to a thin-film antenna and a hemispheric silicon lens. Images of high visual quality are obtained at temperatures above 77 K. The results demonstrated the potential of a HTS superconducting detector...
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