Abstract:
Apparatuses, systems, and methods for ion traps are described herein. One apparatus includes a number of microwave (MW) rails and a number of radio frequency (RF) rails formed with substantially parallel longitudinal axes and with substantially coplanar upper surfaces. The apparatus includes two sequences of direct current (DC) electrodes with each sequence formed to extend substantially parallel to the substantially parallel longitudinal axes of the MW rails and the RF rails. The apparatus further includes a number of through-silicon vias (TSVs) formed through a substrate of the ion trap and a trench capacitor formed in the substrate around at least one TSV.
Abstract:
An electron gun also has a cathode for emitting electrons, a heater cap which contains a heater for applying the cathode with thermal energy for emitting electrons, a retainer for securing the cathode on the heater cap by clamping the peripheral edge of the cathode onto the heater cap, and a cylindrical Wehnelt supporter. The cylindrical Wehnelt supporter has a Wehnelt electrode for focusing an electron beam that is formed in such a shape that an average angle of the surface thereof with respect to an outermost shell of the electron beam matches a Pierce angle, and three or more heater cap supporters for securely supporting the heater cap at a position at which an electron emitting surface of the cathode and an opening formed through the Wehnelt electrode satisfy a predetermined perveance.
Abstract:
Certain embodiments described herein are directed to devices that can be used to align the components of a source assembly in a source housing. In some examples, a terminal lens configured to couple to the housing through respective alignment features can be used to retain the source components in a source housing to provide a source assembly.
Abstract:
Structure de guidage de particules chargées en électricité par des électrodes (11) reliées à un manchon (12) par des structures de support (14) qui consistent selon l'invention en des rayons contraints en traction. Un bon centrage des électrodes (11) est maintenu ainsi qu'un faible dégazage.
Abstract:
In the present invention, a cathode (60) for an x-ray tube (12) is formed with a large area flat emitter (55). To reduce the aberrations to a minimum, the emission area (237) in the flat emitter (55) has a non-rectangular shape and focusing pads (85) arranged around the emitter (55). In an exemplary embodiment, the flat emitter (55) has a non-rectilinear polygonal shape for an emission area (237) on the emitter (55) in order to increase the emission current from the emitter (55) at standard voltage levels without the need to run the emitters (55) at a higher temperature, add additional emitters (55) to the cathode (60) and/or to coat the emitters (55) with a low work function material.
Abstract:
Optical patterns and lithographic techniques are used as part of a process to embed parallel and evenly spaced conductors in the non-planar surfaces of an insulator to produce high gradient insulators. The approach extends the size that high gradient insulating structures can be fabricated as well as improves the performance of those insulators by reducing the scale of the alternating parallel lines of insulator and conductor along the surface. This fabrication approach also substantially decreases the cost required to produce high gradient insulators.