PARTICLE BEAM SYSTEM
    75.
    发明申请

    公开(公告)号:US20190088440A1

    公开(公告)日:2019-03-21

    申请号:US16196081

    申请日:2018-11-20

    摘要: Particle beam system comprising a particle source; a first multi-aperture plate with a multiplicity of openings downstream of which particle beams are formed; a second multi-aperture plate with a multiplicity of openings which are penetrated by the particle beams; an aperture plate with an opening which is penetrated by all the particles which also penetrate the openings in the first and the second multi-aperture plate; a third multi-aperture plate with a multiplicity of openings which are penetrated by the particle beams, and with a multiplicity of field generators which respectively provide a dipole field or quadrupole field for a beam; and a controller for feeding electric potentials to the multi-aperture plates and the aperture plate so that the second openings in the second multi-aperture plate respectively act as a lens on the particle beams 3 and feed adjustable excitations to the field generators.

    Charged particle beam device, simulation method, and simulation device

    公开(公告)号:US09966225B2

    公开(公告)日:2018-05-08

    申请号:US15329638

    申请日:2014-07-28

    申请人: HITACHI, LTD.

    摘要: A simulation device calculates a detection number of electrons generated by charged particles radiated to a sample by a simulation and generates a simulation image of the sample. The simulation device holds penetration length information (272) in which incidence conditions of the charged particles and a penetration length are associated with each other, sample configuration information (271) which shows a configuration of a sample, and emission electron number information in which the incidence conditions of the charged particles and an emission electron number are associated with each other. The simulation device calculates the number of electrons emitted from a predetermined incidence point, on the basis of incidence conditions at the predetermined incidence point, the penetration length information (272), the sample configuration information (271), and the emission electron number information.

    Apparatus for suppression of arcs in an electron beam generator

    公开(公告)号:US09875874B2

    公开(公告)日:2018-01-23

    申请号:US15341699

    申请日:2016-11-02

    IPC分类号: H01J29/98

    摘要: An apparatus for suppression of arcs in an electron beam generator including: a first module providing an operating voltage; a second module including a coil suitable for a voltage of at least 10 kV, and at least one free-wheeling diode connected in parallel to the coil; a third module including a first circuit component configured to detect a first actual value for electric voltage, and a first signal is producible when the first actual value falls below a first threshold value, a second circuit component by which a second actual value for electric current is detectable, and a second signal is generated when the second actual value exceeds a second threshold value, a control logic, which optionally links the first and second signals and a resultant output signal is producible; a semiconductor-based switch suitable for the voltage of at least 10 kV, which is opened based on the output signal.