The BaBar experiment uses data since 1999 in examining the violation of charge and parity (CP) symmetry in the field of high energy physics. This event simulation experiment is a compute intensive task due to the complexity of the Monte-Carlo simulation implemented on the GEANT engine. Data needed as input for the simulation (stored in the ROOT format), are classified into two categories: condi...

The problem of a jet modelling at the CMS test beam experiments has been studied using GEANT 3.21 package. A simple experimental setup consisting of an active target and a hodoscope in the forward hemisphere is proposed to separate spectator jets from single particles which passed the target without interaction. The rejection factor of proposed algorithm for single particles is better then 1000...

An iron sampling calorimeter with warm-liquid ionization chambers has been tested at the CERN SPS in order to study the signal development and to verify the energy calibration of the hadron calorimeter in the KASCADE-Grande air shower experiment. The absolute energy calibration of the detectors is discussed. Results of the analysis of the lateral and longitudinal shower development in the calor...

The STAR experiment at RHIC is a large acceptance detector. The ElectroMagnetic Calorimeter (EMC) will provide a sensitive trigger to study high pt jets and hard photons in AuAu, pp, and pAu collisions. The capability for the EMC to trigger on jets and direct photons was studied for trigger level 0. Trigger efficiencies and expected process rates were obtained for pp and pAu reactions, which wi...

Geant4 is a toolkit for the simulation of the passage of particles through matter. It provides a comprehensive set of tools for geometry, tracking, detector response, run, event and track management, visualization and user interfaces. Geant4 also has an abundant set of physics models that handle the diverse interactions of particles with matter across a wide energy range. However, there are als...

در این کار پژوهشی، نمونه‌های هیدروکسی اپتایت آلاییده با ناخالصی‌های سریم، گادولونیم و ترکیبی از دو ناخالصی به روش هیدروترمال سنتز شدند. منظور بررسی فازهای بلوری تشکیل یافته هرکدام شده، کد MAUD که یک نرم‌افزار برای تجزیه تحلیل ساختار ماده استفاده پراش بر اساس ریتولد است، شد. پاسخ دزیمتری ترمولومینسانس نمونه‌ها مورد قرار گرفت یافته‌ها نشان داد نمونه‌ ترکیبی، سطح میانی است. مشخص شد افزودن سریم می‌...

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...

Nowadays, different mature IP-QoS standards and architectures for multimedia networking (e.g. Virtual Laboratory, E-Learning) are available for integration and testing in real scenarios. This article discusses the results of the end-to-end performance testing activity carried out over the European-wide MOICANE Project Pilot, a scalable GEANT-based network where the intelligence is concentrated ...