Geometry Optimization of a Phased Array Feed on the Arecibo Telescope for Maximum Survey Efficiency

A wide-field receiver for the Arecibo Telescope is currently in development, the Advanced L band Phased Array Camera for Arecibo (ALPACA). The Arecibo optical system provides a new challenge for design optimization of phased array feeds. We report on results from a simulation and design optimization study aimed at determining the element layout and geometry that maximizes the receiver sensitivity, field of view, and survey speed.