Introduction: Exposure to indoor radon increases the risk of lung cancer. This study examined the level of indoor radon in dwellings of Khorramabad city, by using passive alpha-track detector (CR-39) during winter of 2016. Materials and Methods: In the present study, we detected the concentration of indoor radon in 56 dwellings. A passive sampling instrument (alpha-track detector with CR-39 pol...

The track timing capabilities of a silicon drift detector based tracker for a future linear electron-positron collider are evaluated. We show such a detector can time tracks at the nanosecond, and for high-P T , sub-nanosecond level. This implies that, even for collider designs with the bunch spacing at 1.4 ns, every track can be assigned to a particular bunch crossing at a confidence level of ...

The radial distribution of track density on a solid-state nuclear track detector inside a diffusion chamber is a function of the fraction f of Po decay before deposition. In the present work, procedures are proposed to determine f experimentally by determining the track density distribution on an LR115 detector in a diffusion chamber. First, a relatively tall diffusion chamber, with a height of...

A tracking algorithm based on the Concurrent Track Evolution method has been developed to propagate track candidates which have been found in the main tracking system between vertex detector and RICH into the \trigger chamber" area between RICH and electromagnetic calorimeter. The performance of the method is tested on HERA-B Monte Carlo events with full detector simulation and in the framework...