H01J37/24

MEASUREMENT SYSTEM AND METHOD OF SETTING PARAMETER OF CHARGED PARTICLE BEAM DEVICE

A method of setting a parameter of a charged particle beam device, for shortening the time required to adjust an ABCC parameter. An inverse conversion processing unit generates a simulator input signal corresponding to an electron emitted from a sample. A simulation detector uses an arithmetic model that simulates a detector and executes arithmetic processing on the simulator input signal in a state in which characteristic information is reflected in an arithmetic parameter. A simulated image conversion unit executes arithmetic processing corresponding to an image conversion unit and converts a signal from the simulation detector into a simulated image. An ABCC search unit searches for an ABCC parameter with respect to the simulation detector so that an evaluation value obtained from the simulated image becomes a specified reference value, and outputs the ABCC parameter as a search result to an ABCC control unit of the actual machine.

Method and system for adjusting focal point position

The present disclosure relates to a method and system for adjusting a focal point position of an X-ray tube. The method may include: obtaining a first thermal capacity and a first position of a focal point of an X-ray tube; obtaining a second thermal capacity of the X-ray tube; determining a second position of the focal point the X-ray tube based on the second thermal capacity; determining a target grid voltage difference of a focusing cup of the X-ray tube based on the first position and the second position of the focal point; and adjusting the X-ray tube based on the target grid voltage difference.

In-situ plasma cleaning of process chamber components

Provided herein are approaches for in-situ plasma cleaning of ion beam optics. In one approach, a system includes a component (e.g., a beam-line component) of an ion implanter processing chamber. The system further includes a power supply for supplying a first voltage and first current to the component during a processing mode and a second voltage and second current to the component during a cleaning mode. The second voltage and current are applied to one or more conductive beam optics of the component, individually, to selectively generate plasma around one or more of the one or more conductive beam optics. The system may further include a flow controller for adjusting an injection rate of an etchant gas supplied to the beam-line component, and a vacuum pump for adjusting pressure of an environment of the beam-line component.

SYSTEM AND METHOD OF GENERATING HIGH VOLTAGE VARIABLE FREQUENCY ELECTROMAGNETIC RADIATION
20230097778 · 2023-03-30 ·

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.

Diagnostic System

The present disclosure proposes a diagnostic system capable of properly identifying the cause of even an error for which multiple factors or multiple compound factors may be accountable. The diagnostic system according to the present disclosure is provided with a learning device for learning at least one of a recipe defining operations of an inspection device, log data describing states of the device, or specimen data describing characteristics of a specimen in association with error types of the device, and estimates the cause of the error by using the learning device (refer to FIG. 4).

Controller and control techniques for linear accelerator and ion implanter having linear accelerator
11576252 · 2023-02-07 · ·

An apparatus may include global control module, the global control module including a digital master clock generator and a master waveform generator. The apparatus may also include a plurality of resonator control modules, coupled to the global control module. A given resonator control module of the plurality of resonator control modules may include a synchronization module, having a first input coupled to receive a resonator output voltage pickup signal from a local resonator, a second input coupled to receive a digital master clock signal from the digital master clock generator, and a first output coupled to send a delay signal to the master waveform generator.

Charged particle beam apparatus and control method

A charged particle beam apparatus acquires an image that is not affected by movement of a stage at a high speed. The apparatus includes: a charged particle source for irradiating a sample with a charged particle beam; a stage on which the sample is placed; a measurement unit for measuring a movement amount of the stage; a deflector; a deflector offset control unit, which is a feedback control unit for adjusting a deflection amount of the deflector according to the movement amount of the stage; a plurality of detectors for detecting secondary charged particles emitted from the sample by irradiation of the charged particle beam; a composition ratio calculation unit that calculates composition ratios of signals output from the detectors based on the deflection amount adjusted by the feedback control unit; and an image generation unit for generating a composite image by compositing the signals using the composition ratio.

Charged particle beam apparatus and control method

A charged particle beam apparatus acquires an image that is not affected by movement of a stage at a high speed. The apparatus includes: a charged particle source for irradiating a sample with a charged particle beam; a stage on which the sample is placed; a measurement unit for measuring a movement amount of the stage; a deflector; a deflector offset control unit, which is a feedback control unit for adjusting a deflection amount of the deflector according to the movement amount of the stage; a plurality of detectors for detecting secondary charged particles emitted from the sample by irradiation of the charged particle beam; a composition ratio calculation unit that calculates composition ratios of signals output from the detectors based on the deflection amount adjusted by the feedback control unit; and an image generation unit for generating a composite image by compositing the signals using the composition ratio.

CONTROLLER AND CONTROL TECHNIQUES FOR LINEAR ACCELERATOR AND ION IMPLANTER HAVING LINEAR ACCELARATOR
20230125883 · 2023-04-27 · ·

An apparatus may include global control module, the global control module including a digital master clock generator and a master waveform generator. The apparatus may also include a plurality of resonator control modules, coupled to the global control module. A given resonator control module of the plurality of resonator control modules may include a synchronization module, having a first input coupled to receive a resonator output voltage pickup signal from a local resonator, a second input coupled to receive a digital master clock signal from the digital master clock generator, and a first output coupled to send a delay signal to the master waveform generator.

Interferometric stage positioning apparatus

A stage apparatus for an e-beam inspection apparatus comprising: an object table (3) comprising an supporting surface, the object table configured to support a substrate (190) on the supporting surface; a positioning device (180) configured to a position the object table; a position measurement system (5) comprising a position sensor (8-10) configured to measure a height position of the object table parallel to a first axis, the first axis being substantially perpendicular to the supporting surface, the position sensor comprising an interferometer measurement system having an interferometer sensor (9, 10, 22), wherein a measurement beam (11, 15) of the interferometer sensor is configured to irradiate a reflective surface (13, 17) of the object table in a measurement direction, the measurement direction having a first component parallel to the first axis and a second component parallel to a second axis, the second axis being substantially perpendicular to the first axis.