A self-contained hermetically sealed foil changer for advancing a portion of foil web into a position normal to the path of a high energy particle beam. The path of the beam is defined generally by an aperture plate and cooperating axially movable barrel such that the barrel can be advanced toward the plate thereby positioning a portion of the foil across the beam path and sealing the foil between the barrel and the plate to form a membrane across said beam path. A spooling apparatus contained in the foil changer permits selectively advancing a fresh supply of foil across the beam path without breaking the foil changer seal.
申请公布号
US4734586(A)
申请公布日期
1988.03.29
申请号
US19860836883
申请日期
1986.03.06
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY
发明人
CRIST, CHARLES E.;IVES, HARRY C.;LEIFESTE, GORDON T.;MILLER, ROBERT B.