Uh, killing or trapping raccoons IS NOT RACCOON-PROOFING.
There are always more raccoons lined up to move in. And chances are pretty good that one of them will test your *actual* raccoon-proofing BEFORE you get a chance to trap or kill it.
Close the popdoor (securely, latched with a coonproof latch) by dusk every night without fail; put 1/2" hardwarecloth over all coop openings (windows, vents, etc) and don't put roosts right next to 'em; build the run out of something STRONG with holes no bigger than 2x4" (preferably smaller) and make sure that the bottom 2-3' of the run fence has something with 1/2" holes, ideally hardwarecloth. Do not use chickenwire for anything predatorproofing-related.
Good luck, have fun,
Pat