Abstract: Provided is a heat treatment device including: a laser oscillator configured to produce a laser; one or more optical systems each configured to irradiate an object to be treated with the laser produced from the laser oscillator; and a rotating table on which the object is to be mounted. When a reaching temperature of the object, at which an activation rate of the object reaches a target value through one-time irradiation with the laser, is set as a first temperature, a second temperature lower than the first temperature is set as a target value of the reaching temperature of the object, and the object is repeatedly irradiated with the laser from one of the one or more optical systems two or more times.

Abstract: In an ozone generating device including a discharge unit for discharging a material gas that flows through a discharge space formed between two electrodes to generate ozone and a cooling unit for radiating heat which is generated by the discharging, wherein the material gas is obtained by vaporizing a liquefied raw material, the cooling unit includes a first cooling unit through which a first refrigerant flows in contact with one of the two electrodes and a second cooling unit which is provided further to the downstream side of flow of the material gas in the discharge unit than the first cooling unit, and in which the cold heat source is the liquefied raw material and the temperature of the second refrigerant introduced to the second cooling unit is set to be lower than the temperature of the first refrigerant introduced to the first cooling unit.

Abstract: In an ozone generating device including a discharge unit for discharging a material gas that flows through a discharge space formed between two electrodes to generate ozone and a cooling unit for radiating heat which is generated by the discharging, wherein the material gas is obtained by vaporizing a liquefied raw material, the cooling unit includes a first cooling unit through which a first refrigerant flows in contact with one of the two electrodes and a second cooling unit which is provided further to the downstream side of flow of the material gas in the discharge unit than the first cooling unit, and in which the cold heat source is the liquefied raw material and the temperature of the second refrigerant introduced to the second cooling unit is set to be lower than the temperature of the first refrigerant introduced to the first cooling unit.

Abstract: An ozone generating apparatus which is provided with a discharge suppressing member formed of a metal plate and covering an outer circumferential surface of a portion of a dielectric tube facing to a tube sheet, the discharge suppressing member being electrically in contact with a metal tube or the tube sheet, wherein the discharge suppressing member is formed by curling the metal plate longer than a circumferential length of the dielectric tube into a circular shape so as to have an overlapping portion, and by joining together, in the overlapping portion, a part of the metal plate placed outside and a part of the metal plate placed inside, at a near-end portion of the metal plate placed outside in the overlapping portion, and wherein the discharge suppressing member has, on the part of the metal plate placed outside in the overlapping portion, a spring portion.

Abstract: According to the drift tube linear accelerator of the invention, its acceleration cavity is configured with a center plate and a pair of half cylindrical tubes, wherein the center plate includes a ridge, stems connecting the ridge and drift tube electrodes, and the drift tube electrodes, and wherein the acceleration cavity is configured, as seen in cross section perpendicular to a beam-acceleration center axis, whose inner diameter in X-direction that is perpendicular to a central axis in planar direction in which the stem of the center plate extends and that is passing through the beam-acceleration center axis, is longer than whose inner diameter in Y-direction parallel to the central axis in planar direction.

Abstract: An ozone generating apparatus which is provided with a discharge suppressing member formed of a metal plate and covering an outer circumferential surface of a portion of a dielectric tube facing to a tube sheet, the discharge suppressing member being electrically in contact with a metal tube or the tube sheet, wherein the discharge suppressing member is formed by curling the metal plate longer than a circumferential length of the dielectric tube into a circular shape so as to have an overlapping portion, and by joining together, in the overlapping portion, a part of the metal plate placed outside and a part of the metal plate placed inside, at a near-end portion of the metal plate placed outside in the overlapping portion, and wherein the discharge suppressing member has, on the part of the metal plate placed outside in the overlapping portion, a spring portion.

Abstract: The particle beam rotational irradiation apparatus is provided with an irradiation nozzle that irradiates a charged particle beam, a beam transport unit that transports the charged particle beam to the irradiation nozzle, and a rotating unit that can rotate around the isocenter; the particle beam rotational irradiation apparatus is characterized in that the beam transport unit has three or more bending electromagnets and in that the bending electromagnets are arranged in such a way that in the case where as a pair of bending planes, any two of the bending planes of the bending electromagnets are selected, the two bending planes of at least one pair of bending planes are not on the same plane, not parallel with each other, and not perpendicular to each other.

Abstract: According to the drift tube linear accelerator of the invention, its acceleration cavity is configured with a center plate and a pair of half cylindrical tubes, wherein the center plate includes a ridge, stems connecting the ridge and drift tube electrodes, and the drift tube electrodes, and wherein the acceleration cavity is configured, as seen in cross section perpendicular to a beam-acceleration center axis, whose inner diameter in X-direction that is perpendicular to a central axis in planar direction in which the stem of the center plate extends and that is passing through the beam-acceleration center axis, is longer than whose inner diameter in Y-direction parallel to the central axis in planar direction.

Abstract: The particle beam rotational irradiation apparatus is provided with an irradiation nozzle that irradiates a charged particle beam, a beam transport unit that transports the charged particle beam to the irradiation nozzle, and a rotating unit that can rotate around the isocenter; the particle beam rotational irradiation apparatus is characterized in that the beam transport unit has three or more bending electromagnets and in that the bending electromagnets are arranged in such a way that in the case where as a pair of bending planes, any two of the bending planes of the bending electromagnets are selected, the two bending planes of at least one pair of bending planes are not on the same plane, not parallel with each other, and not perpendicular to each other.

Abstract: An RF accelerating cavity includes an accelerating cavity unit and an inductance varying device having a magnetic member connected parallel to an acceleration electrode gap. The RF accelerating cavity is tuned in such a fashion that a charged particle beam acceleration frequency matches a resonant frequency of the RF accelerating cavity by regulating inductance of the inductance varying device in accordance with a changing pattern of the charged particle beam acceleration frequency. Alternatively, impedance of the RF accelerating cavity is increased with the provision of a fixed inductance connected parallel to the acceleration electrode gap when the RF accelerating cavity has a narrow acceleration frequency range.

Abstract: An objective is to provide a circular acceleration apparatus that can accelerate higher currents as well as avoid complex controlling of a deflecting magnetic field generated by an electron deflection unit. The circular acceleration apparatus is provided, which comprising a circular accelerator 2 including an electron acceleration unit 13 and a deflection-magnetic-field generating unit 14; an electron generator 1, to which a pulsed voltage is applied, to generate electrons for injecting to the circular accelerator 2; and a circuit element which generates the pulsed voltage for providing to the electron generator 1 by making the pulsed voltage applied to the electron generator 1 have at least one of a slow rising edge and a slow falling edge.

Abstract: An electromagnetic wave generating device includes: a hollow annular vacuum chamber; an electron gun; an electromagnet configured with a pair of discoid combinations in which a cylindrical accelerating magnet pole and an annular focusing magnet pole are arranged in this order from the inner side to the outer side of the combinations, and are disposed symmetrically and concentrically with each other on both sides of the chamber and coaxially with the center axis of the chamber, and a return yoke disposed outside both accelerating and focusing magnet poles and the chamber; accelerating coils wound around the accelerating magnet poles, for exciting the poles; and focusing coils wound around the focusing magnet poles, for exciting the poles; wherein a through hole is formed at the center of the accelerating magnet pole so that power supply wires connecting the accelerating coils to an accelerating power supply are led out through the hole.

Abstract: The electrode lengths of a plurality of electrodes linearly arranged in an acceleration cavity are proportional to the velocity of a traveling ion beam. Further, the electrode length is so designated that, in each half of a predetermined cycle in the ion beam direction of travel, the absolute value of a difference, relative to a length that is proportional to the beam traveling velocity is equal to or greater than a value corresponding to the phase width of the traveling ion beam, is provided for electrodes that do not exceed three units and that are fewer than electrodes allotted to half the predetermined cycle.

Abstract: The electrode lengths of a plurality of electrodes linearly arranged in an acceleration cavity are proportional to the velocity of a traveling ion beam. Further, the electrode length is so designated that, in each half of a predetermined cycle in the ion beam direction of travel, the absolute value of a difference, relative to a length that is proportional to the beam traveling velocity is equal to or greater than a value corresponding to the phase width of the traveling ion beam, is provided for electrodes that do not exceed three units and that are fewer than electrodes allotted to half the predetermined cycle.

Abstract: An objective is to provide a circular acceleration apparatus that can accelerate higher currents as well as avoid complex controlling of a deflecting magnetic field generated by an electron deflection unit. The circular acceleration apparatus is provided, which comprising a circular accelerator 2 including an electron acceleration unit 13 and a deflection-magnetic-field generating unit 14; an electron generator 1, to which a pulsed voltage is applied, to generate electrons for injecting to the circular accelerator 2; and a circuit element which generates the pulsed voltage for providing to the electron generator 1 by making the pulsed voltage applied to the electron generator 1 have at least one of a slow rising edge and a slow falling edge.

Abstract: The present invention provides a particle beam accelerator for accelerating charged particles along a traveling direction of the charged particles. The invention provides a particle beam accelerator, in which the charged particle beam deflected by spiral-shaped-deflecting electromagnet 3, is accelerated by an accelerating unit 5, the charged particle beam circulating in an annular vacuum passageway of a vacuum duct 1 a plurality of times differing in orbit. And gap 9 is formed in the accelerating unit 5 of the vacuum duct 1, and gap-constituting face of the vacuum duct 1 is formed to be perpendicular to each of the traveling directions of the charged particle beam orbiting on a first orbit and on a second orbit. In the above accelerator, vibrations of the charged particle beam can be brought under control and loss of the charged particle beam can be reduced.

Abstract: An electromagnetic wave generating device includes: a hollow annular vacuum chamber; an electron gun; an electromagnet configured with a pair of discoid combinations in which a cylindrical accelerating magnet pole and an annular focusing magnet pole are arranged in this order from the inner side to the outer side of the combinations, and are disposed symmetrically and concentrically with each other on both sides of the chamber and coaxially with the center axis of the chamber, and a return yoke disposed outside both accelerating and focusing magnet poles and the chamber; accelerating coils wound around the accelerating magnet poles, for exciting the poles; and focusing coils wound around the focusing magnet poles, for exciting the poles; wherein a through hole is formed at the center of the accelerating magnet pole so that power supply wires connecting the accelerating coils to an accelerating power supply are led out through the hole.

Abstract: An RF accelerating cavity includes an accelerating cavity unit and an inductance varying device having a magnetic member connected parallel to an acceleration electrode gap. The RF accelerating cavity is tuned in such a fashion that a charged particle beam acceleration frequency matches a resonant frequency of the RF accelerating cavity by regulating inductance of the inductance varying device in accordance with a changing pattern of the charged particle beam acceleration frequency. Alternatively, impedance of the RF accelerating cavity is increased with the provision of a fixed inductance connected parallel to the acceleration electrode gap when the RF accelerating cavity has a narrow acceleration frequency range.

Abstract: The present invention provides a particle beam accelerator for accelerating charged particles along a traveling direction of the charged particles. The invention provides a particle beam accelerator, in which the charged particle beam deflected by spiral-shaped-deflecting electromagnet 3, is accelerated by an accelerating unit 5, the charged particle beam circulating in an annular vacuum passageway of a vacuum duct 1 a plurality of times differing in orbit. And gap 9 is formed in the accelerating unit 5 of the vacuum duct 1, and gap-constituting face of the vacuum duct 1 is formed to be perpendicular to each of the traveling directions of the charged particle beam orbiting on a first orbit and on a second orbit. In the above accelerator, vibrations of the charged particle beam can be brought under control and loss of the charged particle beam can be reduced.

Abstract: A high performance beam accelerator in which accelerating voltage may be increased by applying a high excitation frequency to the accelerator core and controlling heat generation. The beam accelerator includes an annular hollow vessel with an annular passage, fixed magnetic field generators generating magnetic fields for deflecting and guiding a charged particle beam into an orbit, an accelerating gap for inducing an accelerating electric field, and an accelerator core for generating the accelerating electric field via the accelerating gap by changing magnetic state in accordance with electromagnetic induction. Injection to ejection of charged particles is completed within one cycle of the excitation frequency applied to the accelerator core. The accelerator core includes wound multiple layers of a ribbon-shaped soft magnetic alloy, 50 &mgr;m or less in thickness, and having a saturation magnetic flux density of 1 Tesla or more.