A Brooklyn man was sentenced Monday to 18 years ​behind bars for raping his 8-year-old stepdaughter — who kept the sickening sex attack a secret until revealing it in a college-application essay nearly a decade later. Albert Tarrats, 62, remained mum throughout his sentencing in Brooklyn Supreme Court, but prosecutor Anna Krutaya read a statement from his victim, who ​wrote that she’s still haunted by his monstrous crimes. “Getting closure and justice on this horrific situation is the best thing I could have gotten from this experience,” the now-18-year-old woman wrote.