A structure for grounding an extreme ultraviolet mask (EUV mask) is provided to discharge the EUV mask during the inspection by an electron beam inspection tool. The structure for grounding an EUV mask includes at least one grounding pin to contact conductive areas on the EUV mask, wherein the EUV mask may have further conductive layer on sidewalls or/and back side. The inspection quality of the EU mask is enhanced by using the electron beam inspection system because the accumulated charging on the EUV mask is grounded. The reflective surface of the EUV mask on a continuously moving stage is scanned by using the electron beam simultaneously. The moving direction of the stage is perpendicular to the scanning direction of the electron beam.

A vibration damping system for a charged particle beam apparatus according to the present invention includes a column through which a charged particle beam passes, a vibration detection unit that detects vibration of the column, a damping mechanism that applies vibration to the column to suppress the vibration of the column, and a control device that controls the damping mechanism. The control device includes a damping gain control unit that amplifies a detection signal of the vibration detection unit with a set amplification factor and outputs an amplified detection signal as a control signal to the damping mechanism, and a saturation suppression unit that adjusts a feedback gain value of the damping gain control unit according to a detection signal of the vibration detection unit, a signal of the damping mechanism, and a maximum output value and a minimum output value of the damping mechanism.

A discharge detection apparatus includes a vacuum container, a conductive installation member in the vacuum container, the installation member being connected to the vacuum container so as to be retained by the vacuum container; a conductive antenna in the vacuum container; and a retainer comprising a material having a specific resistance of 1×10.sup.5 to 1×10.sup.11 (Ω.Math.cm), the retainer retaining the antenna with respect to the installation member without a contact between the installation member and the antenna, by means of a screw located through an inside of the antenna and an inside of the retainer.

Disclosed herein are apparatuses and systems for reentrant fluid delivery techniques. An example system includes at least a fluid delivery conduit extending between first and second electrical potentials, wherein the fluid delivery conduit is formed into a tilted helical so that a fluid flowing through the fluid delivery conduit experiences an electric field reversal through each winding of the fluid delivery conduit.

Disclosed herein are apparatuses and systems for reentrant fluid delivery techniques. An example system includes at least a fluid delivery conduit extending between first and second electrical potentials, wherein the fluid delivery conduit is formed into a tilted helical so that a fluid flowing through the fluid delivery conduit experiences an electric field reversal through each winding of the fluid delivery conduit.

A Faraday shielding apparatus includes a Faraday shielding plate and a heating circuit; the Faraday shielding plate includes a conductive ring and a plurality of conductive petal-shaped members radially symmetrically connected to the outer periphery of the conductive ring; when the heating circuit is used in the etching process, the Faraday shielding plate is heated by electricity. During the etching process, the heating circuit is conductively connected to the Faraday shielding plate, increasing the temperature of the Faraday shielding plate when it is energized, heating a medium window and reducing the amount of product deposits. During the cleaning process, the heating circuit and the Faraday shield are turned off, and the Faraday shielding plate is connected to a shielding power supply to clean the dielectric window. The output terminal of the heating power supply is filtered by way of a filter circuit unit, then connected to the Faraday shielding plate.

A Faraday shielding apparatus includes a Faraday shielding plate and a resistance wire attached to the lower end of the Faraday shielding plate; the Faraday shielding plate includes a conductive ring and a plurality of conductive petal-shaped members radially symmetrically connected to the outer periphery of the conductive ring; and an insulating and thermally conductivity layer is on the outer surface of the resistance wire. During the etching process, the heating circuit and the resistance wire are conductively connected, increasing the temperature of the resistance wire when it is energized. The Faraday shielding plate is between a radio frequency coil and the resistance wire to form a shield. The output terminal of the heating power supply is filtered by way of a filter circuit unit, then is connected to the resistance wire, preventing coupling between the radio frequency coil and the resistance wire.

An exemplary embodiment of the present invention provides a substrate treating apparatus, including: a chamber having an inner space; a shower head for partitioning the inner space into an upper first zone and a lower second zone, and formed with a plurality of through holes; a support unit for supporting a substrate in the second zone; a gas supply unit for supplying gas to the first zone; a plasma source for forming a plasma in the first zone by exciting the gas; and an adsorption plate coupled to the shower head, in which a surface of the adsorption plate is provided with a material that adsorbs radicals contained in the plasma.

An exemplary embodiment of the present invention provides a substrate treating apparatus, including: a chamber having an inner space; a shower head for partitioning the inner space into an upper first zone and a lower second zone, and formed with a plurality of through holes; a support unit for supporting a substrate in the second zone; a gas supply unit for supplying gas to the first zone; a plasma source for forming a plasma in the first zone by exciting the gas; and an adsorption plate coupled to the shower head, in which a surface of the adsorption plate is provided with a material that adsorbs radicals contained in the plasma.

Disclosed herein is an apparatus comprising: a source of charged particles configured to emit a beam of charged particles along a primary beam axis of the apparatus; a condenser lens configured to cause the beam to concentrate around the primary beam axis; an aperture; a first multi-pole lens; a second multi-pole lens; wherein the first multi-pole lens is downstream with respect to the condenser lens and upstream with respect to the second multi-pole lens; wherein the second multi-pole lens is downstream with respect to the first multi-pole lens and upstream with respect to the aperture.