background: the purpose of this study was to investigate the application of the monte carlo technique to calculate and analysis of dosimetric parameters for electron beams used in radiotherapy. this technique is based on statistical method and has a powerful role in different radiotherapy aspects. materials and methods: the simulated medical linear accelerator was the varian clinac 2100c. the e...

The level of photon beam stability required to meet measurement resolution goals varies from experiment to experiment, depending on experiment-specific photon phase space acceptance aperture and the sensitivity of measurement to electron beam motion within its 6-D phase space. Stability time scales range from hours to microseconds, depending on experiment sampling rate, data integration period ...

The high energy, high intensity polarized electron/positron beam (5 − 10GeV/10GeV) facility (eRHIC) which is under consideration at BNL will collide with the existing RHIC heavy ion (100GeV per nucleon) and polarized proton beam (50−250GeV). This facility will allow to significantly enhance the exploration of fundamental aspects of Quantum Chromodynamics (QCD), the underlying quantum field theo...

Abstract In this article, we consider the ratio of structure functions for heavy quark pair production at low values . The importance charm and beauty is examined according to Hadron Electron Ring Accelerator (HERA) data. behavior these ratios considered due hard pomeron gluon distribution function. results are in good agreement with HERA Expanding data range new energies unders...

Practically all synchrotron x-ray sources to data are based on the use of storage rings to produce the high current electron ~or positron! beams needed for synchrotron radiation ~SR!. The ultimate limitations on the quality of the electron beam, which are directly reflected in many of the most important characteristics of the SR beams, arise from the physics of equilibrium processes fundamental...