Solenoid

About: Solenoid is a research topic. Over the lifetime, 19278 publications have been published within this topic receiving 114721 citations.

Solenoid operated valve

Abstract: A solenoid operated valve with a primary diaphragm type valve member controlled in accordance with the fluid pressure on opposite sides thereof and a solenoid operated pilot valve having a fixed axially extending pilot valve outlet tube extending through a central opening in the diaphragm valve member and operable for selectively referencing the fluid pressure on one side of the diaphragm with the valve outlet pressure.

Air flow recorder, generator and analysis system for inhalation device testing and modeling

Abstract: An air flow device for use in recording, analyzing, replicating, and generating breathing patterns. A piping structure provides receipt and transfer of pressurized gas through the device. The piping structure has a source connection for receiving a single constant source of pressurized gas. Aspirators are connected to the piping structure for receiving pressurized gas from the source connection and for selectively creating an output pressurization comprising a positive pressure gas flow and a negative pressure gas flow at a proportional solenoid valve. A balancing valve is connected to the piping structure for controlling and calibrating the output pressurization of the aspirators. A control system provides control of the aspirators, the balancing valve, and a solenoid valve. A solenoid valve is mechanically connected to the piping structure with pneumatic input and output connections and electronically connected to the control system with data input and output connections. The solenoid valve provides patterned pneumatic flow between the aspirators and a system model according to air flow commands received by the solenoid from the control system. The system model, in one embodiment, is a breath actuated inhaler device.

Magnetic Shield Material Characterization for the Facility for Rare Isotope Beams' Cryomodules

Abstract: The saturation fields of cylindrical cryogenic magnetic shields, for quarter-wave resonator cavities, of diameters ranging from 229 to 447 mm were measured at 300 and 10 K. A 0.86 T normal conducting solenoid and a 2.5 T superconducting solenoid were used at 300 and 10 K, respectively. The shielding of the high magnetic field region of the cavity, due to fringe fields entering the shield through the beam-port holes of the shield, was examined. The relative initial permeability of toroidal samples from two cryogenic shielding materials were measured at 0.358 A/m, at different frequencies, to extrapolate the static value. These samples were also exposed to external fields up to 0.86 T at 300 K, and the residual magnetic field was measured to check for magnetization of the shielding materials. Results indicate that the performances of the measured cryogenic shielding materials are dependent on the magnitude of the applied field. The performances are improved at cryogenic temperatures only when the shields are exposed to small magnetic fields. At greater fields, however, the performance is degraded at cryogenic temperatures. The shielding materials are not magnetized when exposed to fields up to 0.86 T.

High magnetic field generation for laser-plasma experiments

Abstract: An electromagnetic solenoid was developed to study the effect of magnetic fields on electron thermal transport in laser plasmas. The solenoid, which is driven by a pulsed power system supplying 30 kJ, achieves magnetic fields of 13 T. The field strength was measured on the solenoid axis with a magnetic probe and optical Zeeman splitting. The measurements agree well with analytical estimates. A method for optimizing the solenoid design to achieve magnetic fields exceeding 20 T is presented.