Scintillator Telescope in the AGS Extracted Beamline

An instrument for probing beam halo and obtaining beam profiles is discussed. The device described here is a prototype version, to obtain data and prepare for a more permanent device. The goals of the permanent device are to allow slow extracted beam emittances to be more routinely measured and to have a diagnostic for probing the wings of the beam distribution. The device works on secondary emission from thin targets, as well as scattering into two scintillator telescopes. The targets are movable over the entire aperture at the device. Data will be presented, as well as a description of the design of the system