Brief Summary of a Meeting on Electron Generation at LHC Collimators 26.02.2003 present: Alfredo Ferrari, Daniel Schulte, Frank Zimmermann ---------------------------------------------------- This is a complicated problem. In principle many jaws, magnetic fields, and beam fields (skin depth?!) should be included. Impact parameters of the order of 100 nm or even less are not trivial either (variation of dE/dx? surface roughness?). FLUKA stops at 10 keV. This cut off could be decreased to 1 keV at the expense of greatly increased computing time. SNS/BNL data at 28 MeV are interesting but cannot directly be applied to our problem, as the physics of the shower is greatly different. An experiment at the SPS (or PS) would be desirable, perhaps by modifying an existing collimator. We may want to propose one, once we have an estimate of the electron flux. Plan: Calculate energy spectrum and fluence (spectrum weighted with cos theta) for 1 jaw and one typical impact parameter of 100 nm at 7 TeV. (Simulation uses about 40000 incident protons.) Gather data on secondary emission yield for higher-energetic electrons.