The LEP injection monitors: design and first results with beam

The LEP (Large Electron Positron collider) injection monitors are comprised of split foil monitors, luminescent screens, and beam stoppers. The monitors are described with particular emphasis on their special features, including their low loss factors, their protection against synchrotron radiation, and the screen read-out with a CCD (charge coupled device) chip. The results obtained during the positron injection tests in the LEP in July 1988 are reported.<>