公开(公告)号：US09697982B2

公开(公告)日：2017-07-04

申请号：US15091639

申请日：2016-04-06

Applicant: Euclid TechLabs, LLC

Inventor： Sergey V Baryshev ,  Chunguang Jing ,  Jiaqi Qiu ,  Sergey Antipov ,  Gwanghui Ha ,  June W Lau ,  Yimei Zhu

IPC: H01J37/04 ,  H01J37/147 ,  H01J37/06

CPC classification number: H01J37/06 ,  H01J37/045 ,  H01J37/1472 ,  H01J2237/04 ,  H01J2237/0432 ,  H01J2237/061 ,  H01J2237/1508

Abstract: An ElectroMagnetic-Mechanical Pulser can generate electron pulses at rates up to 50 GHz, energies up to 1 MeV, duty cycles up to 10%, and pulse widths between 100 fs and 10 ps. A modulating Transverse Deflecting Cavity (“TDC”) imposes a transverse modulation on a continuous electron beam, which is then chopped into pulses by an adjustable Chopping Collimating Aperture. Pulse dispersion due to the modulating TDC is minimized by a suppressing section comprising a plurality of additional TDC's and/or magnetic quadrupoles. In embodiments the suppression section includes a magnetic quadrupole and a TDC followed by four additional magnetic quadrupoles. The TDC's can be single-cell or triple-cell. A fundamental frequency of at least one TDC can be tuned by literally or virtually adjusting its volume. TDC's can be filled with vacuum, air, or a dielectric or ferroelectric material. Embodiments are easily switchable between passive, continuous mode and active pulsed mode.

公开(公告)号：US20200343013A1

公开(公告)日：2020-10-29

申请号：US16662434

申请日：2019-10-24

Applicant: Euclid Techlabs, LLC

Inventor： Chunguang Jing ,  Jiaqi Qiu ,  Ao Liu ,  Eric John Montgomery ,  Yubin Zhao ,  Wade Rush ,  Roman Kostin ,  Alexei Kanareykin

IPC: G21K1/04 ,  H01J37/26

Abstract: An electromagnetic mechanical pulser implements a transverse wave metallic comb stripline TWMCS kicker having inwardly opposing teeth that retards a phase velocity of an RF traveling wave to match the kinetic velocity of a continuous electron beam, causing the beam to oscillate before being chopped into pulses by an aperture. The RF phase velocity is substantially independent of RF frequency and amplitude, thereby enabling independent tuning of the electron pulse widths and repetition rate. The TWMCS further comprises an electron pulse picker (EPP) that applies a pulsed transverse electric field across the TWMCS to deflect electrons out of the beam, allowing only selected electrons and/or groups of electrons to pass through. The EPP pulses can be synchronized with the RF traveling wave and/or with a pumping trigger of a transverse electron microscope (TEM), for example to obtain dynamic TEM images in real time.

公开(公告)号：US10319556B2

公开(公告)日：2019-06-11

申请号：US15368051

申请日：2016-12-02

Applicant: Euclid TechLabs, LLC

Inventor： Chunguang Jing ,  Jiaqi Qiu ,  Sergey V Baryshev ,  June W Lau ,  Yimei Zhu

IPC: H01J37/04 ,  H01J37/317

Abstract: An ElectroMagnetic-Mechanical Pulser (“EMMP”) generates electron pulses at a continuously tunable rate between 100 MHz and 20-50 GHz, with energies up to 0.5 MeV, duty cycles up to 20%, and pulse widths between 100 fs and 10 ps. A dielectric-filled Traveling Wave Transmission Stripline (“TWTS”) that is terminated by an impedance-matching load such as a 50 ohm load imposes a transverse modulation on a continuous electron beam. The dielectric is configured such that the phase velocity of RF propagated through the TWTS matches a desired electron energy, which can be between 100 and 500 keV, thereby transferring electromagnetic energy to the electrons. The beam is then chopped into pulses by an adjustable aperture. Pulse dispersion arising from the modulation is minimized by a suppressing section that includes a mirror demodulating TWTS, so that the spatial and temporal coherence of the pulses is substantially identical to the input beam.

公开(公告)号：US20160293377A1

公开(公告)日：2016-10-06

申请号：US15091639

申请日：2016-04-06

Applicant: Euclid TechLabs, LLC

Inventor： Sergey V. Baryshev ,  Chunguang Jing ,  Jiaqi Qiu ,  Sergey Antipov ,  Gwanghui Ha ,  June W. Lau ,  Yimei Zhu

IPC: H01J37/06 ,  H01J37/147 ,  H01J31/00

CPC classification number: H01J37/06 ,  H01J37/045 ,  H01J37/1472 ,  H01J2237/04 ,  H01J2237/0432 ,  H01J2237/061 ,  H01J2237/1508

Abstract: An ElectroMagnetic-Mechanical Pulser can generate electron pulses at rates up to 50 GHz, energies up to 1 MeV, duty cycles up to 10%, and pulse widths between 100 fs and 10 ps. A modulating Transverse Deflecting Cavity (“TDC”) imposes a transverse modulation on a continuous electron beam, which is then chopped into pulses by an adjustable Chopping Collimating Aperture. Pulse dispersion due to the modulating TDC is minimized by a suppressing section comprising a plurality of additional TDC's and/or magnetic quadrupoles. In embodiments the suppression section includes a magnetic quadrupole and a TDC followed by four additional magnetic quadrupoles. The TDC's can be single-cell or triple-cell. A fundamental frequency of at least one TDC can be tuned by literally or virtually adjusting its volume. TDC's can be filled with vacuum, air, or a dielectric or ferroelectric material. Embodiments are easily switchable between passive, continuous mode and active pulsed mode.

Abstract translation: 电磁机械脉冲发生器可以以高达50GHz的速率产生电子脉冲，能量高达1MeV，占空比高达10％，脉冲宽度在100fs和10ps之间。 调制横向偏转腔（“TDC”）对连续电子束施加横向调制，然后通过可调节的切割准直孔将其切成脉冲。 由调制TDC引起的脉冲色散由包括多个附加TDC和/或磁四极管的抑制部分最小化。 在实施例中，抑制部分包括磁性四极杆和TDC，随后是四个额外的四极杆。 TDC可以是单电池或三电池。 至少一个TDC的基本频率可以通过字面或实际调整其音量进行调节。 TDC可以填充真空，空气或电介质或铁电材料。 实施例可在无源连续模式和有源脉冲模式之间容易切换​​。

公开(公告)号：US10804001B1

公开(公告)日：2020-10-13

申请号：US16662434

申请日：2019-10-24

Applicant: Euclid Techlabs, LLC

Inventor： Chunguang Jing ,  Jiaqi Qiu ,  Ao Liu ,  Eric John Montgomery ,  Yubin Zhao ,  Wade Rush ,  Roman Kostin ,  Alexei Kanareykin

IPC: G21K1/04 ,  H01J37/26

Abstract: An electromagnetic mechanical pulser implements a transverse wave metallic comb stripline TWMCS kicker having inwardly opposing teeth that retards a phase velocity of an RF traveling wave to match the kinetic velocity of a continuous electron beam, causing the beam to oscillate before being chopped into pulses by an aperture. The RF phase velocity is substantially independent of RF frequency and amplitude, thereby enabling independent tuning of the electron pulse widths and repetition rate. The TWMCS further comprises an electron pulse picker (EPP) that applies a pulsed transverse electric field across the TWMCS to deflect electrons out of the beam, allowing only selected electrons and/or groups of electrons to pass through. The EPP pulses can be synchronized with the RF traveling wave and/or with a pumping trigger of a transverse electron microscope (TEM), for example to obtain dynamic TEM images in real time.

公开(公告)号：US10515733B1

公开(公告)日：2019-12-24

申请号：US16393469

申请日：2019-04-24

Applicant: Euclid Techlabs, LLC

Inventor： Chunguang Jing ,  Jiaqi Qiu ,  Ao Liu ,  Eric John Montgomery ,  Yubin Zhao ,  Wade Rush ,  Roman Kostin ,  Alexei Kanareykin

IPC: G21K1/04

Abstract: An electromagnetic mechanical pulser implements a transverse wave metallic comb stripline TWMCS kicker having inwardly opposing teeth structured to retard a phase velocity of an RF traveling wave propagated therethrough to match the kinetic velocity of a continuous electron beam simultaneously propagated therethrough. The kicker imposes transverse oscillations onto the beam, which is subsequently chopped into pulses by an aperture. The RF phase velocity is substantially independent of RF frequency and amplitude, thereby enabling independent tuning of the electron pulse widths and repetition rate. The exterior surface of the kicker is conductive, thereby avoiding electron charging. In embodiments, various elements of the kicker and/or aperture can be mechanically varied to provide further tuning of the pulsed electron beam. A divergence suppression section can include a mirror TWMCS and/or magnetic quadrupoles. RF can be applied to a down-selecting TWMCS downstream of the aperture to reduce the pulse repetition rate.

公开(公告)号：US09913360B1

公开(公告)日：2018-03-06

申请号：US15338569

申请日：2016-10-31

Applicant: Euclid TechLabs, LLC

Inventor： Sergey Antipov ,  Roman Kostin ,  Sergey Kuzikov ,  Chunguang Jing ,  Jiaqi Qiu

IPC: H05H7/16 ,  H05H9/04 ,  H05H7/02 ,  H05H7/08

CPC classification number: H05H9/048 ,  H05H7/02 ,  H05H7/08 ,  H05H7/16 ,  H05H7/22 ,  H05H2007/025 ,  H05H2007/027 ,  H05H2007/084 ,  H05H2007/227

Abstract: A resonant apparatus such as a resonant waveguide module in an RF particle accelerator includes an unbrazed joint that provides a reliable vacuum seal and RF contact between resonators with precisely controlled internal geometry. The joint can be disassembled and reassembled without degradation. Hard, stainless steel end faces include knife edges pressed into a copper central component, such as a gasket. The knife edges extend the waveguide interiors without gaps or interruptions. The central component serves as a coupling iris or other functional component of the resonant apparatus, thereby allowing the central component to have substantial dimensions that inhibit mechanical distortions thereof. The waveguides and knife edges can be copper plated. Embodiments include embedded passages and/or recesses used for cooling, radiation shielding, magnetic focusing coils, and/or electron optics element formed by permanent magnets.

公开(公告)号：US20170162361A1

公开(公告)日：2017-06-08

申请号：US15368051

申请日：2016-12-02

Applicant: Euclid TechLabs, LLC

Inventor： Chunguang Jing ,  Jiaqi Qiu ,  Sergey V. Baryshev ,  June W. Lau ,  Yimei Zhu

IPC: H01J37/065 ,  H01J37/04

CPC classification number: H01J37/045 ,  H01J37/3178 ,  H01J2237/0432 ,  H01J2237/065 ,  H01J2237/2802

Abstract: An ElectroMagnetic-Mechanical Pulser (“EMMP”) generates electron pulses at a continuously tunable rate between 100 MHz and 20-50 GHz, with energies up to 0.5 MeV, duty cycles up to 20%, and pulse widths between 100 fs and 10 ps. A dielectric-filled Traveling Wave Transmission Stripline (“TWTS”) that is terminated by an impedance-matching load such as a 50 ohm load imposes a transverse modulation on a continuous electron beam. The dielectric is configured such that the phase velocity of RF propagated through the TWTS matches a desired electron energy, which can be between 100 and 500 keV, thereby transferring electromagnetic energy to the electrons. The beam is then chopped into pulses by an adjustable aperture. Pulse dispersion arising from the modulation is minimized by a suppressing section that includes a mirror demodulating TWTS, so that the spatial and temporal coherence of the pulses is substantially identical to the input beam.