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    SYSTEM FOR CONTROLLING THE RESPECTIVE EMISSION CURRENTS FROM A PLURALITY OF CATHODES OF AN ION SOURCE DEVICE AND ION PROPULSION MOTOR
    21.
    发明授权
    SYSTEM FOR CONTROLLING THE RESPECTIVE EMISSION CURRENTS FROM A PLURALITY OF CATHODES OF AN ION SOURCE DEVICE AND ION PROPULSION MOTOR 失效
    用于控制离子源装置和离子推进电机的多重阴极的相应排放电流的系统

    公开(公告)号：EP0277203B1

    公开(公告)日：1991-01-16

    申请号：EP87905488.0

    申请日：1987-06-25

    Applicant: Hughes Aircraft Company

    Inventor： BEATTIE, John, R. ,  HANCOCK, Donald, J.

    IPC: F03H1/00 ,  H01J3/08

    CPC classification number: H01J27/022 ,  F03H1/0012 ,  F03H1/0037

    Abstract: An emission current control system for balancing the individual emission currents from an array of hollow cathodes (12, 14) has current sensors (28, 30) for determining the current drawn by each cathode from a power supply (18). Each current sensor has an output signal which has a magnitude proportional to the current. The current sensor output signals (V1, V2) are averaged, the average value so obtained being applied to a respective controller (32, 34) for controlling the flow of an ion source material through each cathode. Also applied to each controller are the respective sensor output signals (V1, V2) for each cathode and a common reference signal. The flow of source material through each hollow cathode is thereby made proportional to the current drawn by that cathode, the average current drawn by all of the cathodes, and the reference signal. Thus, the emission current of each cathode is controlled such that each is made substantially equal to the emission current of each of the other cathodes. When utilized as a component of a multiple hollow cathode ion propulsion motor, the emission current control system of the invention provides for balancing the thrust of the motor about the thrust axis and also for preventing premature failure of a hollow cathode source due to operation above a maximum rated emission current.

    METHODS AND SYSTEMS TO PERFORM PROTON COMPUTED TOMOGRAPHY
    22.
    发明申请
    METHODS AND SYSTEMS TO PERFORM PROTON COMPUTED TOMOGRAPHY 审中-公开
    用于执行质子计算机断层摄影术的方法和系统

    公开(公告)号：WO2017066358A1

    公开(公告)日：2017-04-20

    申请号：PCT/US2016/056693

    申请日：2016-10-12

    Applicant: LOMA LINDA UNIVERSITY

    Inventor： PAI, Ramdas, G. ,  SLATER, Jerry, D. ,  SCHULTE, Reinhard, W. ,  NIE, Ying ,  PAI, Sudha

    IPC: A61B5/113 ,  A61B6/03 ,  A61B5/08 ,  A61B5/055 ,  A61N5/10 ,  H01J3/08 ,  H01J3/14

    CPC classification number: A61B5/055 ,  A61B5/0044 ,  A61B5/0073 ,  A61B5/113 ,  A61B5/7207 ,  A61B6/032 ,  A61B6/4258 ,  A61B6/503 ,  A61B18/18 ,  H01J3/08 ,  H01J3/14

    Abstract: Embodiments include methods and systems to perform computed tomography. Respiratory signal data and imaging data associated with a heart can be received, and a target area of the heart can be determined responsive to the imaging data. An initial energy and a direction of a proton beam to deliver a Bragg peak of the proton beam to the target area can be determined. The initial energy and the direction of the proton beam then can be modified responsive to the respiratory signal data to generate a modified initial energy and a modified direction. A proton computed tomography controller can be instructed to deliver the proton beam to the heart at the modified initial energy and the modified direction.

    Abstract translation: 实施例包括执行计算机断层摄影的方法和系统。 可以接收与心脏相关联的呼吸信号数据和成像数据，并且可以响应于成像数据来确定心脏的目标区域。 可以确定质子束的初始能量和方向以将质子束的布拉格峰传送至目标区域。 然后可以响应于呼吸信号数据修改质子束的初始能量和方向，以生成修改的初始能量和修改的方向。 质子计算机断层扫描控制器可以被指示将质子束以改变的初始能量和修改的方向递送到心脏。

    Ionenerzeugungsvorrichtung
    23.
    发明专利
    Ionenerzeugungsvorrichtung 未知

    公开(公告)号：DE102018105790A1

    公开(公告)日：2018-09-20

    申请号：DE102018105790

    申请日：2018-03-13

    Applicant: DENSO CORP

    Inventor： KANESAKI MASAKI ,  YAMAGUCHI NOBUHISA ,  TAKAHASHI MASAYA

    IPC: H01J3/08

    Abstract: In einer Ionenerzeugungsvorrichtung (1, 1-1 und 1-2) entladen sich Entladungselektroden (21 bis 24) und erzeugen Ionen, wenn sie eine Ausgangsspannung aufnehmen, welche von einer Leistungsquelle (3) geliefert wird. Ein Entladungsbeurteilungsteil (4) beurteilt, ob sich jede Entladungselektrode (21 bis 24) korrekt entlädt. Ein Ausgangssteuerteil führt eine Regelung der Ausgangsspannung der Leistungsquelle (3) basierend auf dem Beurteilungsergebnis des Entladungsbeurteilungsteils (4) durch, sodass ein Verhältnis der Anzahl der Entladungselektroden (21 bis 24), welche sich korrekt entladen, zu einer Gesamtzahl der Entladungselektroden (21 bis 24) in dem Entladungselektrodenteil (2) nicht geringer ist als ein vorherbestimmtes Verhältnis.

    УСТРОЙСТВО УПРАВЛЕНИЯ ДОЗОЙ ИЗЛУЧЕНИЯ ДЛЯ УПРАВЛЕНИЯ ИМПУЛЬСОМ ЭЛЕКТРОННОГО ПУЧКА ВО ВРЕМЯ ПРОЦЕДУРЫ IORT
    24.
    发明专利
    УСТРОЙСТВО УПРАВЛЕНИЯ ДОЗОЙ ИЗЛУЧЕНИЯ ДЛЯ УПРАВЛЕНИЯ ИМПУЛЬСОМ ЭЛЕКТРОННОГО ПУЧКА ВО ВРЕМЯ ПРОЦЕДУРЫ IORT 未知

    公开(公告)号：EA201401287A1

    公开(公告)日：2015-04-30

    申请号：EA201401287

    申请日：2013-05-22

    IPC: A61N5/10 ,  H01J3/08

    Abstract: Устройствоуправлениядозойизлучения, предназначенноедляуправленияимпульсомэлектронногопучка, подаваемымвовремяпроцедуры IORT (интраоперационнойрадиационнойтерапии), содержащееШИМ-систему, выполненнуюс возможностьюобеспеченияинжекцииэлектроновприпостоянномнапряжениидлякаждогоимпульсавходногоэлектронногопучка (FE), отправляемогонавходэлектроннойпушки (G) линака (AL), такчтовыходнойэлектронныйпучок (FU), выходящийизлинака (AL), являетсяоченьстабильным, итакчтоизменениедозыизлучениявыходногоэлектронногопучка (FU) происходиттолькоиз-заизменениядлительностиподачивходногоэлектронногопучка (FE); приэтомизменениедозывыходногоэлектронногопучка (FU) прямопропорциональнодлительностиподачивходногоэлектронногопучка (FE).

    27.
    发明专利
    未知

    公开(公告)号：FR2669145B1

    公开(公告)日：1994-02-11

    申请号：FR9013938

    申请日：1990-11-09

    Applicant: THOMSON TUBES ELECTRONIQUES

    Inventor： DESMUR HENRI

    IPC: H01J3/02 ,  H01J23/06 ,  H01J23/34 ,  H01L31/09 ,  H03K17/10 ,  H03K17/78 ,  H01J3/08

    Abstract: An electron gun is modulated by an optoelectronic switching device. This switching device comprises a modulated light source and at least one GaAs or Si solid-state optoelectronic switch, this switch being non-conductive when not illuminated and conductive when illuminated by the modulated light source; the device also includes components to transmit the light from the source to the switch(es). In one embodiment, the modulated light source is a laser and in a second embodiment the source is a continuous source externally modulated by a mechanical or electrooptical device. The optoelectronic switching device is connected between a high-voltage source and the cathode of an electron gun, thus modulating the cathode. The invention is particularly applicable to microwave electron tubes.

    28.
    发明专利
    未知

    公开(公告)号：FR2641412A1

    公开(公告)日：1990-07-06

    申请号：FR8817484

    申请日：1988-12-30

    Applicant: THOMSON TUBES ELECTRONIQUES

    Inventor： EPSZTEIN BERNARD

    IPC: H01J3/18 ,  H01J1/304 ,  H01J3/02 ,  H01J3/08

    Abstract: The invention relates to an electron source (20) formed of at least one elementary electron emitter (31, 31b) comprising an emissive tip (34) having a very small radius of curvature and operating in accordance with the field emission principle. The invention applies particularly in the case of constructions employing technologies used for integrated circuits or in the area of thin-layered films, these technologies enabling a plurality of elementary emitters to be produced on one substrate. … The aim of the invention is in particular to enable an electron beam (F1) to be produced, the intensity of which is independent of possible variations in electron emission by the emissive tip 34. … The emissive tip (34) interacts with an extractor electrode (27), and according to a characteristic of the invention, a control electrode (29), having a negative potential relative to the extractor electrode (27), is arranged downstream of this latter in relation to the sense of propagation (41) of the beam (F1). … …

    30.
    发明专利
    未知

    公开(公告)号：DE2953928C2

    公开(公告)日：1985-07-11

    申请号：DE2953928

    申请日：1979-12-26

    Applicant: RAZIN, GENNADIJ IVANOVIC ,  DMITRIEV, STANISLAV PETROVIC, LENINGRAD, SU

    Inventor： RAZIN, GENNADIJ IVANOVIC ,  DMITRIEV, STANISLAV PETROVIC, LENINGRAD, SU

    IPC: H05H5/02 ,  B32B15/08 ,  B32B15/088 ,  B32B15/095 ,  B65D90/46 ,  G01R13/26 ,  G05F1/455 ,  H01J1/13 ,  H01J37/04 ,  H01J37/06 ,  H01J37/24 ,  H01J37/248 ,  H05H5/00 ,  H05H7/00 ,  H01J37/302 ,  H01J3/08 ,  G05F1/56

    Abstract: PCT No. PCT/SU79/00133 Sec. 371 Date Aug. 5, 1981 Sec. 102(e) Date Aug. 5, 1981 PCT Filed Dec. 26, 1979 PCT Pub. No. WO81/01937 PCT Pub. Date Jul. 9, 1981.Disclosed is an electron beam current stabilizing device comprising a sensing element (12) responsive to the beam current deviation from the predetermined value, a saw-tooth voltage shaper (14) connected to a high-voltage transformer (2) of an acceleration voltage source and providing periodic saw-tooth voltage, smoothly sloping portions thereof being shaped starting from the moment when the voltage at the high-voltage transformer (2) crosses zero, an adder (13) whose one input is connected to the output of the sensing element (12), and the other input, to the output of the shaper (14), a threshold element (15) connected to the output of the adder (13), a differentiator (16) connected to the output of the threshold element (15) to shape the electric driving pulses when the smoothly sloping portions of the saw-tooth voltage cross at the output of the adder (13) the threshold level of the threshold element (15), a light source connected to the output of the differentiator (16) to convert the electric driving pulses into the light pulses, and a photothyristor ( 11) controlled by light pulses and inserted into the primary winding of the heater transformer (5) supplied from one of the secondary windings of the high-voltage transformer (2).

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