Abstract:
An apparatus and method for fast changing a focal length of a charged particle beam the method comprising the step of changing a control signal in response to a relationship between the control signal voltage value and the focal length of the charged particle beam.
Abstract:
In a high voltage, variable frequency radiation generation system, a carrier signal supplied to a primary coil of a transformer is varied, e.g., turned ON and OFF at variable frequencies. The ON duration and/or the average amplitude of the carrier signal may also be varied. Moreover, the carrier signal may be modulated using an audio signal. The parameters to control the variation of the carrier can be provided as a recipe via a software application. A server can provide different types of apps providing different control features. The server may also collect user characteristic data and recipe usage data, and may facilitate exchange of these data and may recommend recipes based on a particular user characteristic.
Abstract:
The invention relates to a charged particle lithography system for transferring a pattern onto the surface of a target. The system comprises a beam generator, a beam stop array and a modulation device. The beam generator is arranged for generating a plurality of charged particle beamlets, the plurality of beamlets defining a column. The beam stop array has a surface for blocking beamlets from reaching the target surface and an array of apertures in the surface for allowing the beamlets to reach the target surface. The modulation device is arranged for modulating the beamlets to prevent one or more of the beamlets from reaching the target surface or allow one or more of the beamlets to reach the target surface, by deflecting or not deflecting the beamlets so that the beamlets are blocked or not blocked by the beam stop array. The modulation device comprises a plurality of apertures with associated modulators; and a plurality of light sensitive elements, both arranged in arrays. A surface area of the modulation device comprises an elongated beam area comprising an array of apertures and associated modulators, and a power interface area for accommodating a power arrangement for suitably powering elements within the modulation device. The power interface area being located alongside a long side of the elongated beam area and extending in a direction substantially parallel thereto.
Abstract:
A focused ion beam device is described. The focused ion beam device includes an ion beam column including an enclosure (14,17) for housing a gas field ion source emitter (12,13) with an emitter area for generating ions, an electrode (18) for extracting ions from the gas field ion source emitter, one or more gas inlets (110,112) adapted to introduce a first gas and a second gas to the emitter area, an objective lens (20) for focusing the ion beam generated from the first gas or the second gas, a voltage supply (72) for providing a voltage between the electrode and the gas field ion source emitter, and a controller (172,472) for switching between a first voltage and a second voltage of the voltage supply for generating an ion beam of ions of the first gas or an ion beam of ions of the second gas.
Abstract:
An electron beam apparatus having an electron analyzer (28) is achieved which can control the illumination lens system (22) by feedback without adversely affecting the imaging action even if a specimen (23) is positioned within the magnetic field of the objective lens. The apparatus has an energy shift control module (37) for controlling energy shift. On receiving instructions about setting of energy shift from the CPU (36), the control module (37) issues an instruction for shifting the accelerating voltage to a specified value to an accelerating-voltage control module (33) . The control module also sends information about the energy shift to an energy shift feedback control module (38), which calculates the feedback value and supplies information about corrections of lenses and deflection coils to a TEM optics control module (34) . The feedback value is multiplied by a corrective coefficient that can be calibrated.
Abstract:
An apparatus and method for fast changing a focal length of a charged particle beam the method comprising the step of changing a control signal in response to a relationship between the control signal voltage value and the focal length of the charged particle beam.
Abstract:
A magnetic lens is disclosed, which includes: a magnetic yoke (10), an exciting coil (20) and a power supply controlling system (30). The magnetic yoke (10) is at outside of the exciting coil (20) and surrounds the coil (20); the exciting coil (20) is made up of litz wires; the power supply controlling system (30) is arranged to supply power to the exciting coil (20) and control the flow directions and magnitudes of the currents in the exciting coil (20). A method for controlling the magnetic lens is also disclosed.