A cable may include a plurality of twisted pairs of individually insulated conductors, a separator positioned between the twisted pairs, and a jacket formed around the twisted pairs and the separator. The separator may include a longitudinally extending spine positioned between the plurality of twisted pairs, and one or more respective projections extending from the spine at each of a plurality of longitudinally spaced locations. Each projection at a given spaced location may extend between a respective set of adjacent twisted pairs. Additionally, a respective longitudinal gap of at least approximately five centimeters may be present between each adjacent pair of longitudinally spaced locations.

A coaxial cable connector comprises: an inner sleeve which has a first outer flange and a first surface; a nut coaxially arranged with the inner sleeve and comprising a first inner flange and a threaded portion, wherein the threaded portion of the nut is adapted to engage with a threaded surface of a connector of an electronic device; a first inner ring coaxially arranged with the inner sleeve and comprising a ring portion and a plurality of elastic portions, one end of each of the plurality of elastic portions comprising a second outer flange disposed between the ring portion and the first outer flange; and an outer sleeve coaxially arranged with the first inner ring and the inner sleeve, wherein when the outer sleeve moves toward the nut, an engaging bump of the outer sleeve presses the second outer flange to enable the second outer flange to move toward the outer surface of the inner sleeve.

An impedance-matched coaxial conductor for a vacuum environment, comprising an electrically conducting inner conductor, an electrically conducting outer hollow conductor configured to surround the inner conductor substantially along its entire length, whereby the outer hollow conductor is separated from the inner conductor, at least an electrically isolating element positioned between the inner conductor and the outer hollow conductor in order to maintain the separation between them, a space between the inner conductor and the outer hollow conductor being vacuum pumpable. An electrically conducting contacting element for a vacuum environment, which is configured to establish an electrical contact between a first conductor and a second conductor, comprising a body made from an electrically conducting material; at least a through hole in the body, configured to accept inside the hole the first conductor in form of an elongated electrical conductor; at least a first threaded hole in the body, oriented substantially perpendicular to the through hole, and extending from an outside surface of the body to the through hole, the threaded hole being configured to accept a screw; and at least a second threaded hole in the body. A time-of-flight mass analyzer comprising a plurality of functional parts selected from at least the following list: an ion source, an extraction region, a drift region, a reflectron, and a detector; a single vacuum flange configured to connect on a vacuum chamber; a plurality of platforms; at least one pillar for each of the plurality of platforms, configured for fixing and distancing the corresponding platform either to the single vacuum flange or to a neighboring platform from the plurality of platforms; each of the plurality of platforms being configured to gather a subset of the plurality of functional parts to obtain a subassembly; and the subassemblies and the single vacuum flange being arranged to form a longish elongated assembly in which each of the platforms defines a mechanical reference in the longish elongated assembly.

A coaxial cable includes an inner conductor including a central part and a conductive layer surrounding the central part, an insulator surrounding the inner conductor, and an outer conductor surrounding the insulator. The central part includes either a cavity or a portion made of resin material.