The Geant4 simulation toolkit is currently adopted by many particle physics experiments, including those at the Large Hadron Collider and ones proposed for future lepton hadron colliders. In present era of precision tests Standard Model increasingly detailed detectors colliders scenario, plays a key role. It required to remain reliable stable detector simulations same time undergo major improve...

Monitoring and intercalibration of the ATLAS TileCal is based on a hydraulically driven gamma source system. Extensive R&D has been carried out and has led to a detailed design for the full ATLAS TileCal. A prototype system has been built and tested on the Barrel and Extended Barrel modules. The realisation of the Cs source system, results concerning its performance, comparisons with other cali...

We present results from beam tests of a fast, finegrained electromagnetic calorimeter. This work was part of a program of research and development of detectors suitable for use at the Superconducting Supercollider (SSC). Our research was motivated specifically by a conceptual design of an SSC experiment dedicated to the measurement of muons produced in high-energy p ro ton -p ro ton collisions ...