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81. 发明专利

JPH10282300A CHARGED PARTICLE IRRADIATION DEVICE AND METHOD FOR OPERATING IT 失效
公开(公告)号：JPH10282300A
公开(公告)日：1998-10-23
申请号：JP23211197
申请日：1997-08-28
申请人： HITACHI LTD
发明人： AKIYAMA HIROSHI , HIRAMOTO KAZUO , MATSUDA KOJI , NORIMINE TETSUROU
IPC分类号： G21K1/093 , A61N5/10 , G21K5/04 , G21K5/10 , H01J37/21
摘要： PROBLEM TO BE SOLVED: To make it possible to inhibit half-shadow blur by passing a charged particle beam through the same via point of a scatterer regardless of the intensity of a magnetic field generated by a scanning magnet. SOLUTION: A charged particle beam 9 from a accelerator passes through quadripolar electromagnets 1 to 5 and is deflected in the same xz face by deflection electromagnets 6 to 8. On this occasion, a scanning magnet 50 between the quadripolar electromagnets 4 and 5 generates a magnetic field in the (y) direction perpendicular to the deflection xz face of the deflection electromagnet 6 and scans the charged particle beam 9 in the deflection xz face. Moreover, a scanning electromagnet 60 upstream of the deflection electromagnet 6 generates a magnetic field in the (z) direction parallel to the deflection xz face and perpendicular to the magnetic field generated by the scanning electromagnet 50. Then, the irradiation are of the charged particle beam 9 sent to an irradiation nozzle 100 is enlarged by a scatterer 20 to irradiate an object to be irradiated. At the moment, a controller controls each power supply of the quadripolar electromagnets 4 and 5 and the deflection electromagnets 7 and 8 so that the center of the beam can pass through the very vicinity of the center of the scatterer 20. As the beam passes through only single focus, consequently, half- shadow blur can be inhibited.

82. 发明专利

JPH1076018A MEDICAL CHARGED-PARTICLE IRRADIATION DEVICE 失效
公开(公告)号：JPH1076018A
公开(公告)日：1998-03-24
申请号：JP23308496
申请日：1996-09-03
申请人： HITACHI LTD
发明人： AKIYAMA HIROSHI , HIRAMOTO KAZUO , MATSUDA KOJI
IPC分类号： A61N5/10 , A61B6/00
摘要： PROBLEM TO BE SOLVED: To position a diseased part with high accuracy in irradiating a charged-particle beam to the diseased part. SOLUTION: This device is designed to include a charged-particle beam application means 1 having beam deflection means 2, 3 that control the irradiated position of a therapeutic charged-particle beam 5 irradiated to the diseased part of a patient 6 placed on a treatment table 7. In this case, the energy of the charged-particle beam irradiated is made high enough for the charged- particle beam to be transmitted through the patient 6 and the treatment table 7, and the charged-particle beam 5 scanned by controlling the irradiated position of the increased-energy charged-particle beam 5 using the beam deflection means 2, 3 and transmitted through the patient 6 and the treatment table 7 is measured by means of a monitor device 8, an energy measuring device 9, and the like, to originate data about the position of the diseased part of the patient 6. Then the therapeutic charged-particle beam 5 is irradiated to the calculated position of the diseased part. Thus the necessity of an X-ray irradiation device for positioning is eliminated, and high-accuracy positioning is made possible using an image that utilizes the charged-particle beam.

83. 发明专利

JPH08213200A HIGH-FREQUENCY DEVICE FOR BEAM EMISSION AND ACCELERATOR USING THE DEVICE 失效
公开(公告)号：JPH08213200A
公开(公告)日：1996-08-20
申请号：JP30094095
申请日：1995-11-20
申请人： HITACHI LTD
发明人： TADOKORO MASAHIRO , HIRAMOTO KAZUO , HIROTA JUNICHI , NISHI MASATSUGU
IPC分类号： H05H7/10 , A61N5/10 , H05H13/04
摘要： PURPOSE: To change the energy of an emitted beam by providing a high-frequency signal generation means capable of outputting a high-frequency signal containing the center frequency of a band noise in agreement with a single frequency, and a frequency amplitude, upon receipt of the single frequency as well as the band noise. CONSTITUTION: A proton beam generated in a pre-stage accelerator 1 becomes incident on an accelerator via an emitter 2. The orbit thereof is maintained with deflection magnets 3, or quadrupole magnets 4, and the beam travels around in a vacuum duct 20. The travelling proton beam is, then, given energy by a high-frequency acceleration cavity 5. When the beam is accelerated to a desired energy level, a high frequency control device 8 controls a high frequency generation device 10 for beam emission, and outputs high-frequency voltage to an electrode 7. Thus, the electrode 7 generates high-frequency magnetic field and the betatron vibration amplitude of the beam increases, due to the existence of the high-frequency magnetic field. In this case, the intensity of a high-frequency signal 13 applied to the electrode 7 is changed to vary the intensity of the emitted beam.

84. 发明专利

JPH0888100A ACCELERATING DEVICE AND ITS OPERATING PROCEDURE 失效
公开(公告)号：JPH0888100A
公开(公告)日：1996-04-02
申请号：JP22473594
申请日：1994-09-20
申请人： HITACHI LTD
发明人： HIROTA JUNICHI , HIRAMOTO KAZUO
IPC分类号： H05H13/04
摘要： PURPOSE: To obtain an accelerating device having an accelerating system of a simplified structure and high reliability by controlling the circulating frequency of ions and the voltage of accelerating means to the desired values. CONSTITUTION: A standard accelerating pattern is calculated by a control device 46 which outputs control signals 463 and 466 to a frequency generating device 61 and an error amplifier 81 for cavity voltage feedback, respectively. The device 61 outputs a signal corresponding to each present frequency according to the signal 463 to a high frequency power supply 50. The power supply 50 supplies high frequency power according to a signal from the device 61 and the amplifier 81 to an accelerating cavity 20 so as to accelerate ion beams 10. The position of the circulating beams 10 is detected by a monitor 31. The beam position on the monitor 31 becomes 0 when the cavity voltage of the cavity 20 reaches the desired value. If the beam position is not 0, its shift is restricted by controlling the circulating frequency and the cavity voltages.

85. 发明专利

JPH07111199A ACCELERATOR, BEAM RADIATION METHOD, AND MEDICAL DEVICE 失效
公开(公告)号：JPH07111199A
公开(公告)日：1995-04-25
申请号：JP19396294
申请日：1994-08-18
申请人： HITACHI LTD
发明人： HIRAMOTO KAZUO , TADOKORO MASAHIRO , HIROTA JUNICHI , NISHI MASATSUGU , NODA AKIRA , INOUE MAKOTO
IPC分类号： H05H13/04 , A61N5/10
摘要： PURPOSE:To provide good quality charged particle beam in a simple device constitution, in a compact size, and under easy control by providing a deflection electromagnet with function of focusing and dispersing the particle beam in horizontal and vertical directions. CONSTITUTION:For a beam radiated by a radiator 15, its track is bent by deflection electromagnets 2, 3 in a process of circulation. Simularly, the electromagnets 2, 3 are capable of changing track gradient in a proportional force to deflection from a beam center track 1. The electromagnet 2 focuses the beam in the horizontal direction, and disperses it in the vertical direction, while the electromagnet 3 disperses the beam in the horizontal direction, and focuses it in the vertical direction. By action of these electromagnets 2, 3, the beam circulates around the track 1 while performing betatron vibration. The beam circulates in an accelerator stably while high frequency energy of the beam circulation frequency from a high frequency hollow 8 is added to the beam. Currents at the electromagnets 2, 3 are thus increased while the energy is given from the hollow 8 to the beam.

86. 发明专利

JPH076900A HIGH FREQUENCY ACCELERATION CAVITY AND ION SYNCHROTRON ACCELERATOR 失效
公开(公告)号：JPH076900A
公开(公告)日：1995-01-10
申请号：JP14327593
申请日：1993-06-15
申请人： HITACHI LTD
发明人： NORIMINE TETSUROU , HIRAMOTO KAZUO , HIROTA JUNICHI
IPC分类号： H05H7/18 , H05H13/04
摘要： PURPOSE:To provide a high frequency acceleration cavity and an ion synchrotron accelerator by which manufacture is facilitated and manufacturing cost is reduced by carrying out sequence control of a control system simpler than tune control of a high frequency acceleration cavity using conventional feedback control. CONSTITUTION:In a high frequency acceleration cavity 10 of an ion synchrotron accelerator, ferrite 21 having a large imaginary number part of magnetic permeability is loaded on the high frequency acceleration cavity 10, and a Q value of the high frequency acceleration cavity 10 is reduced. As the Q value is reduced, an allowable error becomes large in tuning operation to make a resonance frequency of the high frequency acceleration cavity 10 to obtain prescribed acceleration voltage and an impression frequency from high frequency electric power supply 23 coincide with each other. In this state, sequence control is carried out as tune control. The sequence control is carried out by using a digital computer 27.

87. 发明专利

JPH06215899A MULTIPOLAR MAGNET FOR ACCELERATOR 失效
公开(公告)号：JPH06215899A
公开(公告)日：1994-08-05
申请号：JP466093
申请日：1993-01-14
申请人： HITACHI LTD
发明人： TADOKORO MASAHIRO , HIRAMOTO KAZUO , HIROTA JUNICHI
IPC分类号： H05H7/04
摘要： PURPOSE:To provide an inexpensive multipolar magnet easy to manufacture. CONSTITUTION:Of exciting coils 2, 2', 3, 3', current is carried to the coils 2', 3' in the direction of penetrating the paper surface, and to the coils 2, 3 in the reversed direction. In such a constitution, a magnetic field is generated as shown in the drawing. This magnetic field can generate the same magnetic field as a conventional quadrupole magnet having a coil wound on each pole. Since the number of coils used in the conventional multipolar magnet can be reduced to half, the cost can be reduced by the reduction in material cost and the number of process, and the assembling is facilitated.

88. 发明专利

JPH0661000A CIRCULAR ACCELERATOR AND CIRCULAR ACCELERATOR OPERATING METHOD AND SEMICONDUCTOR EXPOSURE DEVICE 失效
公开(公告)号：JPH0661000A
公开(公告)日：1994-03-04
申请号：JP21124092
申请日：1992-08-07
申请人： HITACHI LTD
发明人： HIROTA JUNICHI , HIRAMOTO KAZUO , NISHI MASATSUGU
IPC分类号： H05H13/04 , H01L21/027 , H05H7/06
摘要： PURPOSE:To provide a small circular accelerator and a circular accelerator operating method capable of generating highly bright emission light and a semiconductor exposure device capable of using the highly bright emission light. CONSTITUTION:An electron beam 12 emitted from a front stage accelerator 11 is made incident in an accumulation ring by means of an incident unit 13, and is accelerated, and is accumulated. Afterwards, an inserted light source 18 arranged in a straight line orbit part between a main deflection magnet 14 and an auxiliary deflection magnet 15 is excited, and an alternating magnetic field is generated inside of it. The electron beam meanders or is put in spiral motion by means of this alternating magnetic field, and beams of emission light emitted from the apex of an meandering orbit or a spiral orbit are superposed upon each other, so that highly bright emission light 19 can be generated.

89. 发明专利

JPH05217696A ELECTRON STORAGE RING AND IRRADIATING FIELD ENLARGING METHOD FOR ITS INLET LIGHT SOURCE AND ASSOCIATED DEVICE 失效
公开(公告)号：JPH05217696A
公开(公告)日：1993-08-27
申请号：JP1992592
申请日：1992-02-05
申请人： HITACHI LTD
发明人： SAITO KAZUYOSHI , HIRAMOTO KAZUO , MIYATA KENJI
IPC分类号： H05H13/04
摘要： PURPOSE:To allow a small-size system to effectively widen the irradiation field of a synchrotron radiation from an inlet light source installed at an electron storage ring. CONSTITUTION:An electron storage ring 1 is composed of a deflecting electric magnet 2, quadruple electromagnet 3, high frequency accelerator cavity 4, an inlet light source 5 to cause meander of the course of electron beam with the periodic magnetic field of a group of magnets and generate a synchrotron radiation, and at least one orbit adjusting electric magnet 6 for swinging the electron beam orbit in the position of light source 5 and swinging the generating position of the radiation from the light source 5 within a plane perpendicular to the irradiation direction. According to this constitution in which the electron beam orbit is swung by the magnet 6 without deflecting the orbit surface itself, the irradiation field of the radiation is widened without impairing the directionality and coherence of the radiation.

90. 发明专利

JPH03263800A CIRCULAR ACCELERATOR AND METHOD FOR SUPPLYING CHARGED PARTICLES, AND SUPPLY DEVICE THEREFOR 失效
公开(公告)号：JPH03263800A
公开(公告)日：1991-11-25
申请号：JP19054390
申请日：1990-07-20
申请人： HITACHI LTD
发明人： HIRAMOTO KAZUO , HIROTA JUNICHI , MIYATA KENJI , NISHI MASATSUGU
IPC分类号： H05H13/04
摘要： PURPOSE:To offer a circular accelerator capable of being fed with a large amount of current without any need to enlarge a device such as a vacuum duct by providing a means for expanding a charged particle passage zone in the section of the vacuum duct at the time of supplying charged particles. CONSTITUTION:Among incident charged particles, the particles having higher energy or speed tend to orbit an outer locue, in relation to the centrifugal force of a deflection electromagnet 5. On the contrary, the particles having lower energy or speed tend to orbit an inner orbit. The closed orbit of the charged particles, therefore, can be changed by accelerating or decelerating the particles. As a result, the charged particles are subjected to an overlapped effect of orbit change due to acceleration and deceleration, and positional change due to a betatron vibration. The charged particles, therefore, become capable of passing a linear zone BC. As aforementioned, the charged particles are accelerated or decelerated up to the vicinity of the width of the vacuum duct, or the energy dispersion of the charged particles are so expanded as to correspond to the vacuum duct width, thereby enabling the supply of the charged particles even into the opposite zone of the outgoing opening of a charged particle supply device wherein the charged particles can not otherwise be supplied to the aforesaid zone.

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