What is "egs"

EGS may refer to:

Engineering and transport:

• Egilsstadir Airport in Iceland (IATA Airport Code)
• Experimental Geodetic Satellite, a Japanese satellite - see Experimental Geodetic Payload

Education:

• Enfield Grammar School, an English school
• Ermysted's Grammar School, an English school
• European Graduate School, a Swiss private university

Science:

• Edinburgh Geological Society
• Electron Gamma Shower, a computer simulation program - see EGS (program)
• Enhanced Geothermal System, technology to extract electrical energy from geothermic sources
• Entire Genome Sequencing, the sequencing of an organism's entire genome
• European Geophysical Society, now part of the European Geosciences Union
• Extended Groth Strip, an image taken by the Hubble Space Telescope

• Enhanced Graphics System, graphics system used with the Amiga computer - see ReTargetable Graphics
• Emergency gas supply, a reserve supply of breathing gas for underwater diving
• Expert Global Solutions, a business process outsourcing company based in Texas

The EGS (Electron Gamma Shower) computer code system is a general purpose package for the Monte Carlo simulation of the coupled transport of electrons and photons in an arbitrary geometry for particles with energies from a few keV up to several TeV. It was developed at SLAC. Some have referred to EGS as the de facto gold standard for clinical radiation dosimetry. FLURZnrc is an add-on for EGS that calculates particle flux. CAVRZnrc is an add-on for ion chamber simulations. SPRRZnrc calculates stopping power ratios.

The SLAC version of EGS is no longer actively developed. There are two forks which are being actively maintained:

• EGSnrc, maintained by the Ionizing Radiation Standards Group, Institute for National Measurement Standards, National Research Council of Canada 1
• EGS, maintained by KEK, the Japanese particle physics research facility 2