H01J2237/0216

BEAM STEERING CORRECTION FOR ATTENUATING THE DEGRADATION OF POSITIONAL ACCURACY OF CHARGED PARTICLE AND LASER LIGHT BEAMS CAUSED BY MECHANICAL VIBRATIONS
20210305009 · 2021-09-30 · ·

An apparatus comprising a beam emitter to emit a beam comprising electrons, ions or laser-light photons toward a target substrate. A motion sensor to detect mechanical vibrations of the target substrate. The motion sensor is mechanically coupled to the target substrate, a processor coupled to an output of the motion sensor. The processor is to generate a vibration correction signal proportional to the mechanical vibrations detected by the motion sensor, and beam steering optics coupled to the processor. The beam steering optics are to deflect the beam according to the vibration correction signal to compensate for the mechanical vibrations of the target substrate.

Charged particle beam irradiation apparatus

A charged particle beam irradiation apparatus according to an embodiment includes: an optical column; a stage; a mount supporting the stage; a chamber provided on the mount and supporting the optical column; a detector configured to detect movement of the stage; actuator units each including a curved plate, a piezoelectric element, and a connector connected configured to transmit a first force generated by a change of the curvature of the curved plate to the mount; and an actuator control circuit configured to control the voltage applied to the piezoelectric element of each of the actuator units based on movement information, so that the first force is transmitted from the actuator units to the mount against a second force acting on the mount due to the movement of the stage.

Cooling apparatus for charged particle beam device
11127561 · 2021-09-21 · ·

A secondary storage container is a member which surrounds a primary storage container. A vaporized coolant generated in a primary storage space flows into and is stored in the secondary storage container. Radiant heat is blocked by the secondary storage container in a cooled state. Heat transferred to the primary storage container is reduced by a heat conducting path including the secondary storage container.

Multi-charged-particle-beam writing apparatus and beam evaluating method for the same
11024485 · 2021-06-01 · ·

In one embodiment, a multi-charged-particle-beam writing apparatus includes a shaping aperture array plate including a plurality of first apertures through which a charged particle beam passes to form multiple beams, a movable stage on which a writing target substrate is placed, an inspection aperture plate disposed on the stage, the inspection aperture plate including a second aperture through which one of the multiple beams passes, a current detector detecting a current of the beam that has passed through the second aperture of the inspection aperture plate, a deflector deflecting the multiple beams, the deflector controlling deflection of one of the multiple beams such that the one beam is located at a predetermined position in a region including the second aperture and a surrounding region of the second aperture, and a calculator obtaining a beam position based on the beam current detected by the current detector.

CRYOTRANSFER HOLDER AND WORKSTATION

A workstation is described for mounting specimens into a cryotransfer holder at cryogenic temperature. The workstation allows rotation about the cryotransfer holder axis to improve access to the sample placement area on the holder and to facilitate easy removal and retrieval of the sample after imaging. The cryotransfer holder includes a cylindrical dewar configured to maintain a constant center of mass about the holder axis regardless of orientation of the dewar.

Charged particle beam optical apparatus, exposure apparatus, exposure method, control apparatus, control method, information generation apparatus, information generation method and device manufacturing method
10984982 · 2021-04-20 · ·

A charged particle beam optical apparatus has a plurality of irradiation optical systems each of which irradiates an object with a charged particle beam and a first control apparatus configured to control a second irradiation optical system on the basis of an operation state of a first irradiation optical system.

Cooling Apparatus for Charged Particle Beam Device
20210110993 · 2021-04-15 ·

A secondary storage container is a member which surrounds a primary storage container. A vaporized coolant generated in a primary storage space flows into and is stored in the secondary storage container. Radiant heat is blocked by the secondary storage container in a cooled state. Heat transferred to the primary storage container is reduced by a heat conducting path including the secondary storage container.

Charged particle beam device, objective lens module, electrode device, and method of inspecting a specimen

A charged particle beam device for inspecting a specimen is described. The charged particle beam device includes a beam source for emitting a charged particle beam, an electrode for influencing the charged particle beam, and a damping unit provided on the electrode for damping vibrations of the electrode. Further, an objective lens module with an electrode is described, wherein a damping unit is provided on the electrode. Further, an electrode device is described, wherein a mass damper is mounted on a disk-shaped electrode body of the electrode device.

CHARGED PARTICLE BEAM DEVICE, OBJECTIVE LENS MODULE, ELECTRODE DEVICE, AND METHOD OF INSPECTING A SPECIMEN

A charged particle beam device for inspecting a specimen is described. The charged particle beam device includes a beam source for emitting a charged particle beam, an electrode for influencing the charged particle beam, and a damping unit provided on the electrode for damping vibrations of the electrode. Further, an objective lens module with an electrode is described, wherein a damping unit is provided on the electrode. Further, an electrode device is described, wherein a mass damper is mounted on a disk-shaped electrode body of the electrode device.

CHARGED PARTICLE BEAM APPARATUS
20200365368 · 2020-11-19 · ·

According to an embodiment, a charged particle beam apparatus includes a stage; a chamber; an emission source of the charged particle beam; an electronic optical system configured to emit the charged particle beam; an optical column including the emission source and the electronic optical system; a charged particle detector configured to detect a position of the charged particle beam; a first actuator configured to provide a frequency vibration to the stage based on a first excitation signal; a second actuator configured to provide a frequency vibration to the optical column based on a second excitation signal; a third actuator configured to provide a frequency vibration to the chamber based on a third excitation signal; and a controller configured to generate the first to third excitation signals.