Technology is described for vacuum electron device (e.g., sheet beam klystron) that includes a hollow tube structure. In one example, the hollow tube structure includes at least three resonant cavities and at least two drift tube sections. Each resonant cavity includes a cavity width along a major axis and a cavity height along a minor axis. Each drift tube section includes a drift tube section width and a drift tube section height, and the cavity height is greater than the drift tube section height. A first drift tube section is disposed between a first resonant cavity and a second resonant cavity. A second drift tube section is disposed between the second resonant cavity and a third resonant cavity. A drift tube section width of the first drift tube section is substantially different from a drift tube section width of the second drift tube section.

Technology is described for vacuum electron device (e.g., sheet beam klystron) that includes a hollow tube structure. In one example, the hollow tube structure includes at least three resonant cavities and at least two drift tube sections. Each resonant cavity includes a cavity width along a major axis and a cavity height along a minor axis. Each drift tube section includes a drift tube section width and a drift tube section height, and the cavity height is greater than the drift tube section height. A first drift tube section is disposed between a first resonant cavity and a second resonant cavity. A second drift tube section is disposed between the second resonant cavity and a third resonant cavity. A drift tube section width of the first drift tube section is substantially different from a drift tube section width of the second drift tube section.

A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse-jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse-jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

A chiral molecule can be defined as a molecule that has a non-superimposable mirror image. These mirror images can be referred to as enantiomers. The enantiomers generally have the same set of bond lengths and bond angles in their three-dimensional geometry. Apparatus and techniques described herein can be used to perform analysis of chiral molecules using cavity-enhanced molecular rotational spectroscopy. A sample cell can define a resonant cavity, and a sample introduction port can provide pulse jet injection of an analyte molecule and a chiral tag to allow analysis of a complex comprising the analyte and chiral tag.

There is provided herein an anode for a magnetron, the anode comprising: a cylindrical shell defining a longitudinal axis, a centre of the shell for accommodating a cathode of the magnetron; a plurality of vanes arranged at angular intervals around the shell, wherein an angular separation between each vane and its adjacent vane is configured to provide a cavity resonator of the magnetron, wherein each vane has a width extending radially inwardly from the shell toward the centre of the shell, and has a length continuously extending longitudinally in parallel with the longitudinal axis of the shell; and a plurality of annular strap rings for setting a resonant mode spectrum of the cavity resonator, wherein the strap rings are arranged at longitudinal intervals and concentrically with the longitudinal axis of the shell, wherein each vane comprises an inner vane segment arranged to face the cathode and a respective outer vane segment connected to the inner vane segment and interposed between the inner vane segment and the shell, and wherein the plurality of vanes are configured to support the plurality of strap rings between the respective inner and outer vane segments such that each vane couples alternate strap rings and each strap ring couples alternate vanes.

There is provided herein an anode for a magnetron, the anode comprising: a cylindrical shell defining a longitudinal axis, a centre of the shell for accommodating a cathode of the magnetron; a plurality of vanes arranged at angular intervals around the shell, wherein an angular separation between each vane and its adjacent vane is configured to provide a cavity resonator of the magnetron, wherein each vane has a width extending radially inwardly from the shell toward the centre of the shell, and has a length continuously extending longitudinally in parallel with the longitudinal axis of the shell; and a plurality of annular strap rings for setting a resonant mode spectrum of the cavity resonator, wherein the strap rings are arranged at longitudinal intervals and concentrically with the longitudinal axis of the shell, wherein each vane comprises an inner vane segment arranged to face the cathode and a respective outer vane segment connected to the inner vane segment and interposed between the inner vane segment and the shell, and wherein the plurality of vanes are configured to support the plurality of strap rings between the respective inner and outer vane segments such that each vane couples alternate strap rings and each strap ring couples alternate vanes.

A magnetron is provided and includes a tube body with a plurality of communicated first cavities therein, a plurality of anodes in the first cavities including a cylinder and a plurality of vanes, outer ends of the vanes are connected with an inner circumferential surface of the cylinder; a first resonant cavity and a second resonant cavity are formed between the adjacent vanes, the cylinder is provided with a plurality of coupling slots arranged at intervals and running through the cylinder to communicate the first resonant cavity with the first cavity; a plurality of cathode arranged in and coaxially with the cylinder; the cathodes and inner ends of the vanes are spaced apart; at least part of the cathodes are located inside vanes, and an output slot is defined on the tube body for communicating the first cavity with an outside.

Embodiments herein are directed to a resonator for an ion implanter. In some embodiments, a resonator may include a housing, and a first coil and a second coil partially disposed within the housing. Each of the first and second coils may include a first end including an opening for receiving an ion beam, and a central section extending helically about a central axis, wherein the central axis is parallel to a beamline of the ion beam, and wherein an inner side of the central section has a flattened surface.