Etcheverry Hall indoor and outdoor devices installed

The dosimeter network has added both indoor and outdoor locations at UC Berkeley!

Our highly sensitive air monitor data tells us that there are significant variations in radiation levels due to changes in weather. To see these effects with our dosimeters, we need devices installed outdoors. We have installed a station on the roof of Etcheverry Hall, next to our high precision air monitor. To make comparisons between indoor and outdoor levels, and to control for potential non-weather related variations, we have installed a second device inside, in Prof. Vetter's office in Etcheverry Hall.

Our outdoor station now also includes a higher sensitivity CsI detector able to provide information about the energy of gamma radiation measured, along with several environmental sensors that provide contextual data for any variations in radiation levels seen with our dosimeters.

                                                                                               

Data from our basic silicon sensor with indoor and outdoor locations.

                       

Data from our cesium-iodide crystal giving precise counting statistics and energy information that allows for source identification.

                                               

Data from our air quality sensors. The top graph shows particulate concentrations, which can be used to determine the air quality index, and the lower shows the CO2 concentration in parts-per-million.

                       

Basic weather data (temperature, pressure, and humidity) which may influence air quality and radiation data.

                       
                                                 

Fig 1. Ali Hanks mounts the roof device next to the air vents in our roof enclosure.

 

Fig 2. Ross Meyer helping to install our roof device.