Patent ID: 8746666

Claim:
An apparatus adapted to hold a plurality of pieces of media, each of said pieces of media having an inner diameter and an outer diameter, said apparatus used in conjunction with ion implantation equipment, comprising: a carrier, having a first diameter and a plurality of openings of a second diameter, smaller than said first diameter, each opening passing through said carrier and adapted to hold a piece of media such that two surfaces of said piece of media are exposed; a plurality of passive restraint elements, each associated with one of said openings and disposed along an outer edge of said associated opening, wherein each of said plurality of passive restraint elements is configured to hold a piece of media in said associated opening; and a plurality of active restraint elements, each associated with one of said openings and disposed along said outer edge of said associated opening and operating in conjunction with at least one of said plurality of passive restraint elements, each of said active restraint elements having a first position wherein said piece of media is held in said associated opening, and a second position wherein said piece of media is released from said associated opening, each active restraint element comprising: a wafer holder; a biasing element biased to hold said wafer holder against said piece of media in said first position; and a manual actuator disposed on an outer edge of said carrier, wherein actuation of said manual actuator causes said wafer holder to move to said second position so as to release said piece of media from said associated opening, wherein said plurality of active restraint elements operate independently from one another.