摘要:
A system and method are disclosed for controlling an ion beam. A deceleration lens (7000) is disclosed for use in an ion implanter. The lens may include a suppression electrode (102), first and second focus electrodes, and first and second shields. The shields may be positioned between upper and lower portions of the suppression electrode. The first and second shields are positioned between the first focus electrode and an end station of the ion implanter. Thus positioned, the first and second shields protect support surfaces of said first and second focus electrodes from deposition of back- streaming particles generated from said ion beam. In some embodiments, the first and second focus electrodes may be adjustable to enable the electrode surfaces to be adjusted with respect to a direction of the ion beam. By adjusting the angle of the focus electrodes, parallelism of the ion beam can be controlled. Other embodiments are described and claimed.
摘要:
A vapor deposition source that includes a substantially vertical plate (122) to which first and second filament posts (118 and 120) are coupled. The vapor deposition source also includes a filament (100B) having a first end (102B) and a second end (104B). The filament (100B) provides a substantially concentric source of electrons. The first end (102B) of the filament (100B) is connected to the first filament post (118) and the second end (104B) of the filament (100B) is connected to the second filament post (120). The first end (102B) of the filament (100B) is substantially vertically aligned with the second end (104B) of the filament (100B) when the filament (100B) is connected to the first and second posts (118 and 120).
摘要:
A silicon-based showerhead electrode is provided where backside inserts are positioned in backside recesses formed along the backside of the electrode. The backside inserts comprise a threaded outside diameter, a threaded inside diameter, and a tool engaging portion formed in the threaded inside diameter. The tool engaging portion is formed such that the backside insert further comprises one or more lateral shielding portions between the tool engaging portion and the threaded outside diameter to prevent a tool engaged with the tool engaging portion of the backside insert from extending beyond the threaded outside diameter of the insert. Further, the tool engaging portion of the backside insert comprises a plurality of torque-receiving slots arranged about the axis of rotation of the backside insert. The torque -receiving slots are arranged to avoid on-axis rotation of the backside insert via opposing pairs of torque receiving slots.
摘要:
A kinematic electrode mount is provided for an ion implanter in which an electrode insert member having an electrode body portion which defines an aperture, is inserted into an electrode support frame. In one embodiment, a first kinematic alignment pin of the insert member engages a first, groove-shaped kinematic alignment surface of the electrode support frame to align the first alignment pin in two orthogonal directions relative to the electrode support frame. In addition, a second kinematic alignment pin of the insert member engages a second kinematic alignment surface of the electrode support frame to align the insert member in a rotational orientation relative to the electrode support frame. A plurality of flanges of the insert member engage the electrode support frame to retain the insert member in the aligned position and to electrically couple the electrode insert member to the electrode support frame. A spring positioned between the electrode insert member and the electrode support frame biases the electrode insert member in the aligned and retained position relative to the electrode support frame. Inanother embodiment, the electrode support frame has alignment pins and the insert member has alignment slots.
摘要:
The invention relates to a collimator electrode stack (70), comprising: - at least three collimator electrodes (71-80) for collimating a charged particle beam along an optical axis (A), wherein each collimator electrode comprises an electrode body with an electrode aperture for allowing passage to the charged particle beam, wherein the electrode bodies are spaced along an axial direction (Z) which is substantially parallel with the optical axis, and wherein the electrode apertures are coaxially aligned along the optical axis; and - a plurality of spacing structures (89) provided between each pair of adjacent collimator electrodes and made of an electrically insulating material, for positioning the collimator electrodes at predetermined distances along the axial direction. Each of the collimator electrodes (71-80) is electrically connected to a separate voltage output (151-160). The invention further relates to a method of operating a charged particle beam generator.
摘要:
The present invention relates to a cathode for an X-ray tube, an X- ray tube, a system for X-ray imaging, and a method for an assembly of a cathode for an X-ray tube. In order to provide a cathode with an improved and facilitated assembly, a cathode (10) for an X-ray tube is provided, comprising a filament (12), a support structure (14), a body structure (16), and a filament frame structure (18). The filament is provided to emit electrons towards an anode in an electron emitting direction (24), and the filament at least partially comprises a helical structure (26). Further, the filament is held by the support structure, which is fixedly connected to the body structure. The filament frame structure is provided for electron-optical focussing of the emitted electrons, and the filament frame structure is provided adjacent to the outer boundaries of the filament. The filament frame structure comprises frame surface portions arranged transverse to the emitting direction, and the filament frame structure is held by the support structure.
摘要:
A silicon-based showerhead electrode is provided where backside inserts are positioned in backside recesses formed along the backside of the electrode. The backside inserts comprise a threaded outside diameter, a threaded inside diameter, and a tool engaging portion formed in the threaded inside diameter. The tool engaging portion is formed such that the backside insert further comprises one or more lateral shielding portions between the tool engaging portion and the threaded outside diameter to prevent a tool engaged with the tool engaging portion of the backside insert from extending beyond the threaded outside diameter of the insert. Further, the tool engaging portion of the backside insert comprises a plurality of torque-receiving slots arranged about the axis of rotation of the backside insert. The torque -receiving slots are arranged to avoid on-axis rotation of the backside insert via opposing pairs of torque receiving slots.
摘要:
Techniques for reducing an electrical stress in a acceleration/deceleration system are disclosed. In one particular exemplary embodiment, the techniques may be realized as an acceleration/deceleration system. The acceleration/deceleration system may comprise an acceleration column including a plurality of electrodes having apertures through which a charged particle beam may pass. The acceleration/deceleration system may also comprise a plurality of voltage grading components respectively electrically coupled to the plurality of electrodes. The acceleration/deceleration system may further comprise a plurality of insulated conductors disposed proximate the plurality of voltage grading components to modify an electrical field about the plurality of voltage grading components.