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MELO, G. R. de. Development of monitoring station to record temperature, humidity and supply voltage of HPGe Hyper-Pure Germanium detectors.. 2019. 80 p. Dissertação (Mestrado em Tecnologia Nuclear), Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, São Paulo. A low-cost microcontrollers and sensors system has been developed to monitoring environmental conditions of laboratories where HPGe detectors are used, aimed at automating the control task of the necessary conditions to guarantee the quality of the measures, that have been carried out for many years manually not always with the necessary frequency. The purpose of this work was to develop a monitoring station, together with its controller software, based on an Arduino UNO microcontroller equipped with four thermohygromic sensors to monitor different parts of the environment to which the hyper-pure germanium detector is installed. voltage sensor to monitor its supply voltage, plus a thermocouple to monitor the interior of the dewar. A software based on the C-Sharp language, and a dedicated MySQL database, was developed with friendly interface and allowing to export the results obtained in the form of reports. The system was tested in a Canberra detector model GC2018, where the four thermohygrometers were positioned in different places, allowing to monitor the conditions with determined intervals of at least one minute. To ensure the reliability of the measurements the sensors were calibrated by means of measurements in environments with varying conditions and monitored by device thermohygrometer with a calibration certificate. It has been verified that only one sensor inside and one outside the shield is required. The thermocouple proved to be adequate to monitor the detector cooling and the voltage sensor was not adequate. The measurements of humidity and temperature were made together with measures of resolution of the detector and it was not possible to observe a correlation between the results, indicating that the detector is little sensitive to the observed variations. The system can be replicated if desired, with the improvements suggested in this study, resulting in a low cost and efficient station, including in the LAN itself for other equipment.

Desenvolvimento de estação de monitoramento para registro de temperatura, umidade e tensão de alimentação de detectores HPGe-Germânio Hiper-Puro