Studies with a TPC and development of a procedure to measure ion feedback Dan Peterson, mentor As part of the development of a detector for the International Linear Collider, physicists from Cornell and Purdue are investigating properties of advanced readout devices for a charged particle detection device called a Time Projection Chamber (TPC). During the summer of 2006, we will be measuring the spatial resolution of various readout options using cosmic rays detected in a test chamber located at Cornell. We also plan to develop a means for detecting and comparing the rate of (undesirable) ion feedback, the migration of positive charge back into the detector volume. Data is collected using a sophisticated multi-channel sampling analog-to-digital-converter data acquisition system. The summer student will participate in data-taking, monitoring the data quality and analyzing and interpreting data. Much of the studentŐs activity will be creating an analysis package in C++. The student should have the ability to write programs in C++ and have completed an undergraduate course in electrostatics.