A Manipulator Control System for Creating Radiation Maps Using Mercuric Iodide (HgI2) Detectors
نویسندگان
چکیده
In this paper we describe the development of a robotic system that uses Mercuric Iodide (HgI2) sensors to create a map of radiation intensity in the environment. The sensors are mounted at the end-effector of a PUMA 560 manipulator. Data from these sensors is used to compute the radiation intensity. A control system is developed that moves the endeffector along constant intensity contours. The experiments use light sources (instead of radiation sources) and demonstrate the efficacy of such a system to create radiation maps.
منابع مشابه
A Manipulator Control System for Creating Radiation Maps Using Mercuric Iodide (Hgb) Detectors
In this paper we describe the development of a robotic system that uses Mercuric Iodide (HgI2) sensors to create a map of radiation intensity in the environment. The sensors are mounted at the end-effector of a PUMA 560 manipulator. Data from these sensors is used to compute the radiation intensity. A control system is developed that moves the endeffector along constant intensity contours. The ...
متن کاملSystematic investigation of the signal properties of polycrystalline HgI2 detectors under mammographic, radiographic, fluoroscopic and radiotherapy irradiation conditions.
The signal properties of polycrystalline mercuric iodide (HgI2) film detectors, under irradiation conditions relevant to mammographic, radiographic, fluoroscopic and radiotherapy x-ray imaging, are reported. Each film detector consists of an approximately 230 to approximately 460 microm thick layer of HgI2 (fabricated through physical vapour deposition or a screen-print process) and a thin barr...
متن کاملComparison of 5 and 10mm thick HgI2 pixelated g-ray spectrometers
HgI2 detectors fabricated with pixelated anodes were tested as potential room temperature spectrometers. Spectra were obtained with 5 and 10mm thick devices, and their results were compared. The 5mm thick devices showed some effect of the anode weighting potential, while the 10mm thick devices showed the effects of charge diffusion/sharing and electron trapping. A resolution near 1.4% FWHM usin...
متن کاملPlatelet growth of mercuric iodide
The Faile growth method, when used with purified mercuric iodide (HgI2), along with low molecular weight polyethylene, has yielded tetragonal prismatic HgI2 crystals. Thermal desorption-gas chromatography/mass spectroscopy (TD-GC/MS) studies reveal the existence of alkanes and ketones in the growth ampoules along with low molecular weight polyethylene, presumably decomposition byproducts from, ...
متن کاملSpectroscopy on Thick HgI2 Detectors: A Comparison Between Planar and Pixelated Electrodes
Thick mercuric iodide (HgI 2 ) detectors are investigated as potential room temperature gamma-ray spectrometers. By using pixelated anodes the induced charge on the electrode is dependent mainly on electron movement and is almost independent of the depth of interaction. Moreover, by reading out the planar cathode signal simultaneously, the depth of interaction can be determined and any effects ...
متن کامل