We have examined long term changes in signal amplitude gain, energy resolution and detection efficiency for the active components of the PIBETA detector system. Beam defining plastic scintillation counters were operated in a ∼ 1 MHz stopped π + beam for a period of 297 days, accumulating radiation doses of up to 2 · 10 6 rad. Detectors in the charged particle tracking system—a pair of cylindric...

The Miniaturized Detector for Application in Space (MIDAS) is a compact device with dimensions 5 x 1 cm3 which combines position sensitive Si detectors and fast neutrons spectrometer. MIDAS developed purpose to act as linear energy transfer (LET) spectrometer the charged particles measure dose equivalent from both neutrons. It based on fully depleted monolithic active pixel sensors track deposi...

A national radon survey is still lacking for Greece. Some groups have carried out several more or less local or extended radon surveys and valuable experience has been gained. After the first preliminary survey carried out by our group, where 500 Kodak LR-115 etched track detectors were placed in Greek schools and dwellings for one year, indoor radon measurements were continued by placing the s...