Abstract:
An ultraviolet light source with direct feed gas injection includes a chamber comprising a plasma confinement region and defining an aperture adjacent to the plasma confinement region that passes light generated by the plasma. A magnetic core is positioned around the plasma confinement region and is configured to generate a plurality of plasma current loops that converges in the plasma confinement region during operation. A feed gas injector is coupled to a gas port in the chamber and has an output that is positioned proximate to a boundary of the plasma confinement region so that the feed gas injector provides a feed gas to the plasma confinement region that creates a differential pressure in the plasma confinement region. A high voltage region is coupled to the plasma confinement region. An exhaust port is configured to be coupled to a pump that controls a pressure in the chamber.
Abstract:
The present invention relates to a method for reducing the power consumption of a charged particle system, the charged particle system comprising at least one charged particle optics element and a cooling assembly configured for cooling the at least one charged particle optics element, the method comprising the steps of running the charged particle system in a standby mode, wherein the total power consumption of the charged particle system is reduced compared to running the charged particle system in an operating mode. Furthermore, the present invention relates to a respective charged particle system.
Abstract:
A simple and environment-friendly production equipment for carbon nano-materials includes a short-circuit generator and an AC/DC rectifier. A carbon nano vacuum device for producing the carbon nano-materials is connected with two output ends of the AC/DC rectifier. An alternate current is generated by the short-circuit generator and then is rectified into a direct-current power supply through the AC/DC rectifier to provide a power supply for a first graphite rod and a second graphite rod in the same direction, so as to generate a high-voltage electric arc at a junction of the first graphite rod and the second graphite rod, and plasma ionization is conducted on substances on the two graphite rods through the high-voltage electric arc, so that carbon atoms in the two graphite rods are decomposed, and carbon nano-materials are separated out and collected into a nano collector through a graphite cover.
Abstract:
A multicolumn charged particle beam exposure apparatus includes a plurality of column cells which generate charged particle beams, and the column cell includes a yoke which is made of a magnetic material and generates a magnetic field of a predetermined intensity distribution around an optical axis of the column, and a coil which is wound around the yoke. The coil includes a plurality of divided windings, which are driven by different power sources.
Abstract:
An arc treatment device includes an arc detector operable to detect whether an arc is present in a plasma chamber, an arc energy determiner operable to determine an arc energy value based on an energy supplied to the plasma chamber while the arc is present in the plasma chamber, and a break time determiner operable to determine a break time based on the determined arc energy value.
Abstract:
A method for matching the impedance of the output impedance of a high-frequency power supply arrangement to the impedance of a plasma load includes, in a first impedance matching mode, matching the impedance of the output impedance of the high-frequency power supply arrangement by changing the frequency of the high-frequency signal produced. If the frequency is outside a specified frequency range, in a second impedance matching mode the impedance of the output impedance of the high-frequency power supply arrangement is matched by mechanically or electrically modifying a circuit which is arranged downstream of the high-frequency signal producer.
Abstract:
X-ray CT apparatus is provided in which the photon energy distribution of X-rays to be radiated is flattened. X-ray CT apparatus includes an X-ray tube, a detector, a data acquisition system, a tube voltage generator, and a grid controller. The X-ray tube radiates X-rays onto a subject. The detector includes multiple detection elements for detecting photons forming the X-rays. The data acquisition system counts the number of the detected photons to acquire projection data based on the counted photons. The tube voltage generator applies the tube voltage to the X-ray tube while changing the tube voltage of the X-ray tube in a predetermined cycle. A tube current controller decreases the tube current upon an increase in the tube voltage, and increases the tube current upon a decrease in the tube voltage. Thus, the photon energy distribution of the X-rays radiated from the X-ray tube is flattened.
Abstract:
The present invention provides an inductively coupled, magnetically enhanced ion beam source, suitable to be used in conjunction with probe-forming optics to produce an ion beam without kinetic energy oscillations induced by the source.
Abstract:
Disclosed is a surge protection system for use with an ion source assembly. The system comprises a high voltage power source coupled in series with a thermionic diode and an ion source assembly. The high voltage power supply is enclosed in the pressure tank and drives the ion source assembly. The thermionic diode is comprised of an insulating tube disposed between the ion source assembly enclosure and the output of the high voltage power supply and makes use of existing ion source assembly components to limit damage to the power supply during arc failures of the ion source assembly.
Abstract:
Methods of reducing glitch rates within an ion implanter are described. In one embodiment, a plasma-assisted conditioning is performed, wherein the bias voltage to the extraction electrodes is modified so as to inhibit the formation of an ion beam. The power supplied to the plasma generator in the ion source is increased, thereby creating a high density plasma, which is not extracted by the extraction electrodes. This plasma extends from the ion source chamber through the extraction aperture. Energetic ions then condition the extraction electrodes. In another embodiment, a plasma-assisted cleaning is performed. In this mode, the extraction electrodes are moved further from the ion source chamber, and a different source gas is used to create the plasma. In some embodiments, a combination of these modes is used to reduce glitches in the ion implanter.