A key player in the health fraud scandal of Atlas Copco in Sudbury has received a lengthy prison term. Paul Caron has been sentenced to six-and-a-half years after Copco was overbilled by $22-million over many years. The judge has ordered Caron to pay Copco $10-million. If the fine is still outstanding 10 years after his release, he’ll go back to prison for another six-and-a-half years. Caron is 72. A partner in the scheme, 73-year-old Dirk Plate got five years and has to pay Copco back nearly $78,000. Plate has one year to pay the full amount after he’s released and if he doesn’t, it’s back to prison for another five years.