Jeremy Huddleston, Abilene Christian University / Brookhaven National LaboratoryTitle: Target Length Dependency for Reconstructing Product Angles with the Crystal Ball DetectorAuthors: J. Huddleston, M. Sadler (Abilene Christian University)Abstract: Experiments 913 and 914 are fixed target experiments using the Crystal Ball detector for baryon spectroscopy at Brookhaven National Laboratory. The Crystal Ball is a four-pi detector that was originally used for head on collision experiments at SLAC in the 1970's. It is made up of 672 sodium iodide crystals, forming a spherical shape (less an entrance and exit tunnel) with photomultiplier tubes attached to each crystal. A proton (hydrogen) target is used with an incident beam of either kaons or pions, depending on the desired reaction. The focus of my poster will concern how changes in the target length would affect the Crystal Ball's ability to reconstruct angles from energy clusters within the detector produced by the reactions. |