Rapist? Check. Child rapist? Check. Serial child rapist? Check. Cop? Ooohhs he's going to get fucked up. 150 days should feel like 1500. He should be asking for protection and they will put him in a 7 x 7 cell 23 hours a day. For weeks. For his own safety.
He is a cop. It does not matter the crime. He will go to a country club prison with a cushy one person cell. His identity and history hidden from other inmates, who are non-violent offenders anyway.