Patent ID: 7066107

Claim:
A shield system for use in a plasma chamber, comprising: a top shield plate configured to be attached with a top interior surface of the plasma chamber; a bottom shield plate configured to be attached with a bottom interior surface of the plasma chamber; a rear shield plate configured to be attached with a rear interior surface of the plasma chamber, wherein a rear edge of said top shield plate meets a top edge of said rear shield plate, and wherein a rear edge of said bottom shield plate meets a bottom edge of said rear shield plate, such that said top shield plate, said bottom shield plate and said rear shield plate fit together to substantially cover the chamber's interior surfaces, thus reducing depositions on the inside surfaces of the plasma chamber, while the plasma chamber is operating; and a top extension shield plate, said top extension shield plate having an edge substantially equal in size to an edge of said top shield plate, said top extension shield plate having a groove along said edge of said top extension shield plate, said top shield plate further comprising a tongue along said edge of said top shield plate, wherein said groove of said top extension shield plate is configured to engage said tongue of said top shield plate.