Several of the faculty members in the Physics and Astronomy department will be hiring students to do summer research with them this summer. The job descriptions can be found at http://apps.carleton.edu/curricular/physics/for_students/ResearchatCarleton/summer_carl_opps/.
Contact the individual faculty member if you would like more information or would like to apply for the job. Information on how to apply for summer positions in other departments can be found on the CISMI website at http://serc.carleton.edu/cismi/researchopps.html. Check it out!