Most Helpful Guy
Ask the people on duty there or if you study in a law college or criminolgy there are some professors maybe who knows anout it
Most Helpful Girl
Google is your friend in this case.
There's actually a tv show about it called "60 Days In"
(I can't post a link yet so you have to search for it.)
So it's definitely has been done before (is being done).
It's not so rare. I remember hearing about voluntary lock up situations when I was a kid (long ago lol!)
Just google and ask around your local police station, your criminology professor, etc.