Beam Detector Assembly for the Fermilab Energy Doubler

Abstract
The testing and production of the Fermilab Energy Doubler has necessitated the development of a detection device to locate a proton beam with an accuracy and repeatability of ± .5 mm relative to the centerline of a 2-7/8" bore tube. This information is essential for focusing and "steering" of the beam around a four mile synchrotron. The detectors are positioned, to measure horizontal and vertical off-axis displacement, alternately at each quadrupole magnet. The severity of the operating environment, as well as stringent electrical parameters, have necessitated the development of a number of design innovations. Both the mechanical and electrical considerations will be discussed as they relate to operational criteria.

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