摘要:
Sterilization apparatus for sterilizing packaging containers(2), the sterilization apparatus comprising a first carousel (20) for supporting a plurality of sterilization devices (50), the sterilization devices (50) being adapted to sterilize an interior of the packaging containers (2) by electron beam irradiation, and a transport system for transporting the packaging containers (2), the transport system comprising a second carousel (40) coaxial with the first carousel (20), wherein the first carousel (20) comprises a first rotatable shaft (28) and the second carousel (40) comprises a separate second rotatable shaft (44) coaxial with the first rotatable shaft (20).
摘要:
The present invention relates to a method of forming a three- dimensional article through successively depositing individual layers of powder material that are fused together so as to form the article, comprising a method of operating a triode electron beam source including a cathode (102), a grid (104) and an anode (106) with the following steps: (a) setting an electron beam current, a cathode heating power, a grid potential Ug and a cathode potential Uc to predetermined start values; (b) reducing the cathode heating power and decreasing a Ug - Uc potential difference for mainintainig a predetermined electron beam current; (c) detecting an X-ray signal emanating from the electron beam source with at least one X-ray detector (190); (d) repeating said reducing and detecting steps until the detected X- ray signal is above a predetermined value; and (e) increasing the cathode heating power by a predetermined safety value above the heating power value which resulted in X-ray signals above said predetermined value. Thereby, the lowest acceptable cathode heating power without affacting the electron beam current is determined and thus the lifetime of the cathode element is prolonged.
摘要:
Sterilization device, in particular for sterilization of packaging material, comprising a first chamber, a barrier element and a connection area, wherein the first chamber is adapted to provide charge carriers for sterilization, characterized in that the connection area is connected to a third chamber so that the barrier element forms at least one part of the boundary of a volume in which a first atmosphere exists.
摘要:
A power supply for supplying an electric power to an electron gun, which is used in an electron microscope, and an electron microscope having the same are disclosed. The power supply includes a base board, and at least one sub-board vertically mounted on the base board to supply an electric power to an anode electrode, a filament for emitting electrons, and a grid. The at least one sub-board can include a first sub-board to supply an accelerating volatage to the anode electrode, a second sub-board to supply a heating current to the filament, and a third sub-board to supply a grid volatage to the grid.
摘要:
System and method for heating an apex of a tip of a charged particle source, for example, a gas ion source, comprising a detector configured to detect light generated by the tip apex, and a controller coupled with the charged particle source and the detector so that the controller can control heating of the tip apex based on the light detected by the detector.
摘要:
A power supply for supplying an electric power to an electron gun, which is used in an electron microscope, and an electron microscope having the same are disclosed. The power supply includes a base board, and at least one sub-board vertically mounted on the base board to supply an electric power to an anode electrode, a filament for emitting electrons, and a grid. The at least one sub-board can include a first sub-board to supply an accelerating volatage to the anode electrode, a second sub-board to supply a heating current to the filament, and a third sub-board to supply a grid volatage to the grid.
摘要:
A heating assembly (36) for heating a cathode (38) of an electron gun (30) of an exposure apparatus (10) includes a radiation source (42) and a beam shaper (44). The radiation source (42) generates a source beam (46). The beam shaper (44) receives the source beam (46) and selectively shapes the source beam (46) into a shaped beam (48) that is directed to the cathode (38). In certain embodiments, the beam shaper (44) can readily change the shape and intensity profile of the shaped beam (48) to achieve a desired electron beam (32) from the electron gun (30). In one embodiment, the radiation source (42) generates a pulsed source beam (46).
摘要:
A heating assembly (36) for heating a cathode (38) of an electron gun (30) of an exposure apparatus (10) includes a radiation source (42) and a beam shaper (44). The radiation source (42) generates a source beam (46). The beam shaper (44) receives the source beam (46) and selectively shapes the source beam (46) into a shaped beam (48) that is directed to the cathode (38). In certain embodiments, the beam shaper (44) can readily change the shape and intensity profile of the shaped beam (48) to achieve a desired electron beam (32) from the electron gun (30). In one embodiment, the radiation source (42) generates a pulsed source beam (46).