EP1505855B1 - Accélérateur à tubes de glissement pour l'accélération de paquets d'ions - Google Patents

Accélérateur à tubes de glissement pour l'accélération de paquets d'ions Download PDF

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Publication number
EP1505855B1
EP1505855B1 EP04015387.6A EP04015387A EP1505855B1 EP 1505855 B1 EP1505855 B1 EP 1505855B1 EP 04015387 A EP04015387 A EP 04015387A EP 1505855 B1 EP1505855 B1 EP 1505855B1
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EP
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Prior art keywords
drift tube
structured
steel block
drift
accelerator according
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EP04015387.6A
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German (de)
English (en)
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EP1505855A2 (fr
EP1505855A3 (fr
Inventor
Bernhard Schlitt
Ulrich Ratzinger
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GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
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GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H9/00—Linear accelerators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
    • H05H7/22—Details of linear accelerators, e.g. drift tubes

Definitions

  • the invention relates to a drift tube accelerator for accelerating ion packets in ion beam accelerators.
  • the drift tube accelerator is of the IH type and has a housing of a longitudinally divided three-part vacuum tank.
  • This vacuum tank consists of a middle piece, a lower half shell and an upper half shell.
  • the central piece has on its ion beam-guiding longitudinal axis an inlet opening and an outlet opening for the ion packets.
  • the middle piece has on its opposite inner walls longitudinal ribs which are aligned parallel to the longitudinal axis.
  • drift tube holder are arranged alternately, which in turn hold Driftrohr Federatione coaxial with the ion beam leading longitudinal axis.
  • the centerpiece with the drift tube holders is removably mounted on the lower half shell and is removably covered by the upper half shell.
  • Such Driftröhrenbevanter of a middle piece and an upper and a lower half-shell with a semi-cylindrical cross section of the two half-shells have the disadvantage that the tank in the plane of the center during evacuation due to the radially inwardly acting forces when evacuating the tank by the pressure difference between Environment and tank inside caused to shrink up to several millimeters in diameter, when the inner height of the vacuum tank is greater than the inner distance of the inner walls of the center, especially if there is a large length to diameter ratio in such vacuum tanks for IH Driftröhrenbevanter.
  • This causes misalignment of the drift tube holders held by the opposed longitudinal ribs of the center frame and the drift tube pieces held thereby against each other and with respect to the ion beam guiding longitudinal axis of the center piece.
  • IH drift tube accelerators are equipped with up to two integrated quadrupole magnetic triplet lenses for transversally focusing the ion beams, the pillars of these quadrupole triplet lenses not being carried by the vacuum tank, but being led out of the vacuum tank via membrane bellows and supported in an outer tank subframe , so that even when evacuating the vacuum tank by the evacuation forces occurring can occur misalignments.
  • support of the introduced quadrupole triplet lenses on an outer tank undercarriage is very costly and requires a complex assembly.
  • IH drift tube accelerators results in a very large increase in the ion velocity along the drift tube accelerator, whereby at constant operating frequency of the Driftröhrenbevanters and constant gap geometry causes a large decrease in unit length capacity of the drift tube structure along the accelerator.
  • the center distance between adjacent drift tube pieces also grows along the accelerator, resulting in a significant decrease in the per unit length capacity of the drift tube structure with a constant geometry of the acceleration gaps between the drift tube pieces.
  • the object of the invention is to provide a drift tube accelerator for accelerating ion packets with which the above-mentioned problems can be solved and the disadvantages of known drift tube accelerators are overcome and their areas of application and edge parameters are extended. It is another object of the invention to reduce the investment costs of a Driftröhrenbeschreibers and to increase its efficiency.
  • the drift tube accelerator described above is characterized in that the lower half-shell has a structured lower steel block which has a partially planar inner bottom, on which preferably focusing devices, vacuum feedthroughs and / or tuning elements can be provided. Furthermore, the invention is characterized in that the upper half-shell has a structured upper steel block which has a partially planar inner covering surface, preferably with openings for vacuum passages, wherein tuning elements can be provided on the flat areas of the covering surface.
  • the solution according to the invention has the advantage that can be dispensed with a support frame, because the Driftröhrenbevanter invention due to the structured upper and lower solid steel blocks, which replaced the conventional half-shells, has inherent stability, which make an outer support frame dispensable and misalignment of Driftrohr Federatione against each other and with respect to the ion beam leading longitudinal axis of the centerpiece safely prevent.
  • the drift tube accelerator according to the invention has the advantage that the structured lower steel block has a partially planar inner bottom on which additional components influencing the ion beam within the cavity of the vacuum tank can be advantageously fixed, so that misalignments, previously between those of the outer frame worn components such as triplet lenses and held by the inner walls of the cavity components such as Driftrohr GmbHen can no longer occur because all arranged in the cavity of the vacuum tank additional components, such as focusing and tuning elements can be arranged and supported on flat portions of the inner bottom.
  • the vacuum tank has at least 2 inner regions in which the drift tubes are arranged with alternately arranged Driftrohrhaltern, wherein between the areas each have a special drift tube containing a focusing device for transversely focusing the ion beams standing on the partially planar Inner bottom of the lower structured steel block is arranged so that it encloses the longitudinal axis of the center piece.
  • This embodiment of the invention has the advantage that readjustments of the at least one focusing device are largely avoided, since the focusing device is not held on an independent from the drift tube outer tank frame, but within the cavity of Driftröhrenbevanters on a flat portion of the inner bottom of a structured solid bottom Supported steel block, which replaced the known lower half-shell in an advantageous manner.
  • quadrupole magnets which are arranged as singlets or as multiplets in the special drift tubes, are contained as focusing devices.
  • This embodiment of the invention has the advantage that proven components of magnetic lenses are used.
  • the structured lower steel block or the structured upper steel block or the structured lower and upper steel block along the focussing means have a modified cross-section than along the areas in which the drift tubes are arranged with alternately arranged Driftrohrhaltern.
  • This adaptation of the cross section of the cavity in the region of the focusing devices has the advantage of a partial compensation of the column volume, without detuning the electric field distribution along the longitudinal axis of the drift tube accelerator.
  • the drift tubes are arranged with alternately arranged Driftrohrhalter with increasing in the beam direction center distances. This advantageously takes into account the increasing speed of the ion packets as they pass through the drift tube accelerator.
  • the structured lower steel block or the structured upper steel block or the structured lower and the upper steel block have cavities which extend the cross-section of the vacuum tank in certain sections. This has the advantage that the decrease in the capacity of the drift tube structure relative to the length unit can be compensated cost-effectively as much as possible and production costs can be minimized and incorrect adjustments can be made in order to be able to excite the fundamental mode of the cavity.
  • the structured lower steel block or the structured upper steel block or the structured lower and upper steel block have cavities which gradually expand the cross section of the vacuum tank in certain sections.
  • a stepwise expansion of the Kavticiansqueriteses has the advantage that it can be inexpensively incorporated into the massive lower and upper steel blocks manufacturing technology and in mismatches cost-effective reworking is possible to cost to compensate for a very large decrease in the unit length related capacity of the drift tube structure, and to be able to stimulate the basic mode of the cavity.
  • tuning elements are arranged on the partially planar inner bottom of the structured lower steel block or on the partially planar inner covering surface of the structured upper steel block or on the partially planar inner bottom of the structured lower steel block and on the partially planar inner covering surface of the structured upper steel block ,
  • This has the advantage that on the flat inner surfaces of the vacuum tank, a very good high-frequency and thermal contact between the tuning elements or the AbstimmMechn and the water-cooled solid half shells can be achieved and thereby the tuning elements are sufficiently cooled, causing damage to the cavity due thermal stresses and overheating are avoided.
  • the alternately arranged Driftrohrhalter are guided in longitudinal grooves parallel to the longitudinal axis in the longitudinal ribs of the center piece.
  • Such a longitudinal groove increases the precise alignment of the drift tube pieces coaxially with the jet direction and allows fine adjustment of the pitch of the drift tube pieces to the increasing threading of the accelerated ion packets by shifting the drift tube holders in the longitudinal grooves.
  • the longitudinal ribs have a cooling water channel in the longitudinal direction. This cooling water channel has the advantage that it directly cools the longitudinal rib on which the Driftrohrhalter are attached, and thus can dissipate heat directly from the inner wall of the center piece.
  • the middle piece in the end faces further cooling water channels, so that the massive wall of the front side of the center piece also contribute to the active heat dissipation, and thus a thermal misalignment by thermal distortion of the components of Driftröhrenbelixers particular the inlet opening and the outlet opening the front sides does not occur.
  • the structured lower and the upper steel block have cooling water ducts, which are arranged on their outer surfaces.
  • Such cooling water ducts are inexpensive to manufacture and also reliable, since they are located outside the cavity and the outer shape of the steel blocks can be adjusted.
  • the structured lower and upper steel block have minimum wall thicknesses of 10 mm, wherein within this wall thickness cooling water channels are provided where they cause no weaknesses in terms of strength.
  • the present invention enables the acceleration of the ions from the injection energy at the center port entrance to the exit port to be accelerated from 400 keV / u to 7 MeV / u.
  • the IH drift tube accelerator of the present invention has a length of 3.77 m.
  • the velocity of the ions, upon their acceleration in the IH Drift Tube Accelerator of the present invention, increases from about 2.9% of the speed of light to about 12.2% of the speed of light.
  • the step size or the center distance of the drift tubes or of the drift tube pieces along the IH accelerator increases approximately by a factor of 4.
  • the IH drift tube accelerator according to the invention, compensation for the decrease in the unit length capacity of the drift tube structure is provided in one embodiment of the invention.
  • the decrease in the per unit length capacity of the drift tube structure is compensated for by the broadening cross-section, which can advantageously stimulate the fundamental mode of the cavity.
  • the vacuum tank has four inner regions in which the drift tube pieces are arranged with an increasing increment in the beam direction, between the regions three triplet lenses for focusing the ion beams from region to region on the planar sections of the inner bottom of the structured lower region Steel blocks are arranged so that they enclose the longitudinal axis of the center piece.
  • the use according to the invention of only one drift tube accelerator cavity for four inner acceleration ranges, in particular in the case of the ion accelerator comparatively high operating frequency of about 217 MHz results in comparison to conventional systems to a very long cavity in relation to the inner diameter.
  • the inner height of the IH cavity is only 340 mm, while the inner length of 3718 mm represents a ratio of inner height to inner length of about 1:11. This ratio of internal dimensions would make the RF tuning of the cavity considerably more difficult when working with conventional building types.
  • the invention provides that the structured lower and upper steel block have cavities in a preferred embodiment of the invention, the Extend the cross section of the vacuum tank gradually in stages for the individual areas.
  • a high frequency cavity is achieved for a resonant frequency of about 217 MHz, which has an estimated resonator quality of 12,000 to 15,000.
  • the cavity itself is operated in pulse mode with an RF pulse duration of 0.5 ms and a pulse repetition rate of 10 Hz, which corresponds to a duty cycle of approximately 0.5%.
  • the estimated RF pulse power requirement in the form of power loss of the cavity is approximately 1.0 to 1.1 MW, which results in a mean thermal power consumption of a maximum of about 5 to 6 kW.
  • the thermal energy delivered to the tank is achieved by effective water cooling on the one hand of the longitudinal ribs in the middle part and on the other hand of the outer surfaces of the structured upper and lower steel blocks.
  • the vacuum tank consists of three main parts, all three of which are water-cooled, namely the center piece and the lower and upper half-shells in the form of structured lower and upper steel blocks.
  • the middle piece carries the drift tube structure with, for example, fifty-two drift tube pieces, each of individual length.
  • the drift tube pieces are arranged in the above-mentioned four areas. These four drift tube areas are coupled together by three integrated quadrupole triplet lenses. In each of the areas, another type of drift tube is used.
  • the individual drift tube types differ in their diameters.
  • the drift tubes are carried by drift tube brackets soldered to the drift tubes.
  • the Driftröhrenhalter with the soldered drift tubes are not directly water cooled, but they are introduced into a longitudinal groove of the water-cooled longitudinal rib of the middle part. Thus, they are cooled by the heat conduction of the water-cooled center frame and are made to increase the thermal conductivity of SE copper.
  • the drift tube holders are arranged and fixed in the longitudinal ribs of the middle frame in a longitudinal groove.
  • the center frame with the drift tube structure forms a horizontal plane and is part of the middle piece.
  • the lower and upper tank half-shell is realized according to the invention by structured upper and lower steel blocks, which are made of solid steel blocks. Cooling channels of 270 mm width and 4 mm height can be arranged on the outside of the structured steel blocks to cool these two structured steel blocks.
  • the insides of the steel blocks have flat cutouts. These plan cutouts have different depths in the different four acceleration ranges, so that the cross section is gradually adjusted to the capacity of the drift tube structure related to the unit length. At least a partial compensation of the decrease in the capacity of the drift tube structure relative to the length unit along the IH cavity is thereby achieved.
  • the above-mentioned three large focusing devices are flanged, each containing a magnetic quadrupole Triplettlinse.
  • the lower structured steel block has an adapted cross section for partial compensation of the the orientation of the triplet lenses required support on the inner floor.
  • the invention solves with its stable structure and the problem of not yet achieved very strong increase in the ion velocity by about a factor of 4 within a cavity, especially since it has not been able to achieve a comparatively large ratio between tank inner length to inner diameter. For such a high increase in the ionic speed are so far in the known Driftröhrenbeschreibern always several cavities required, each having a constant over the entire length of the cavity cross-sectional area.
  • the IH drift tube accelerator according to the invention avoids considerable additional costs, which were associated with the usual division into several cavities.
  • the use of only one cavity simplifies the operation of the plant and makes it more reliable, since on the one hand fewer parameters must be controlled and adjusted and on the other hand, the number of additional equipment to be used is minimized, which reduces the probability of failure of the entire system.
  • An operating frequency above 200 MHz could not previously been realized for IH drift tube accelerators with integrated quadrupole triplet lenses according to the prior art.
  • Fig. 1 shows a schematic perspective view of a Driftröhrenbevanters 1, according to an embodiment of the invention.
  • the Driftröhrenbevanter is housed in a housing 2, which is designed as a vacuum tank 3.
  • This housing 2 has a center piece 4 with a central frame, wherein the center piece 4 is screwed vacuum-tight on a lower half shell 5 of a structured lower solid steel block 15.
  • An upper half-shell 6 has a structured upper solid steel block 19 which has a partially planar inner cover surface 20, and which is removably screwed onto the center piece 4 for covering the cavity of the Driftröhrenbevanters 1.
  • the housing 2 Prior to screwing the structured steel upper block 19 onto the center piece 4, the individual drift tube components in the elongate cavity become approximately 3770 mm accommodated.
  • the housing 2 has four acceleration regions 24, 25, 26 and 27. Focussing means 17 are arranged between the acceleration regions 24, 25, 26 and 27, these focussing means 17 consisting of quadrupole triplet lenses 28, 29 and 30. These triplet lenses enclose the longitudinal axis 7, in which the ion beam packets are shot through and accelerated through the center piece in the beam direction 23.
  • the step size between individual drift tubes 14 along the IH drift tube accelerator 1 increases by a factor of about 4.
  • FIGS. 2 to 11 Further details of the embodiment according to the invention Fig. 1 be in the following FIGS. 2 to 11 explained.
  • Fig. 2 shows a partially cutaway schematic plan view of the center piece 4 of the Driftröhrenbevanters 1, according to Fig. 1 , Components with the same functions as in Fig. 1 are denoted by like reference numerals and will not be discussed separately.
  • the arrangement of the resonance components of the Driftröhrenbevanters can be seen.
  • the lengths of the drift tube pieces 14 also increase within the acceleration ranges 24, 25, 26 and 27.
  • These drift tube pieces 14 are held by drift tube holders 13 in such a way that they coaxially surround the longitudinal axis 7 of the middle piece 4.
  • the Driftrohr Anlagene 14 are mounted alternately with their Driftrohrhaltern 13 on the opposite inner walls 10 of the central piece 4.
  • the two inner walls 10 of the middle piece in each of the four regions 24, 25, 26 and 27, a longitudinal rib 11 which carries a longitudinal groove in which the Driftrohrhalter 13 are fixed with increasing center distance a in the beam direction.
  • the distance between the inner walls 10 of the middle piece 4 is slightly widened to adjust the capacitance between the inner walls of the center piece and the triplet lenses so that the required electric field distribution is achieved along the ion beam guiding longitudinal axis of the drift tube accelerator becomes.
  • Fig. 3 shows a schematic bottom view of the structured lower steel block 15 of the Driftröhrenbevanters 1, according to Fig. 1 , wherein on this flat lower surface of the lower steel block 15 openings 21 are arranged with corresponding vacuum flanges 22.
  • the remaining vacuum flanges are partly used for measuring technology and partly for supplying the resonator with a high-frequency alternating current in the order of magnitude of more than 200 MHz.
  • Fig. 4 shows a schematic longitudinal section through the Driftröhrenbevanter 1 according to Fig. 1 , With this longitudinal section the inlet opening 8 and the outlet opening 9 in the region of the middle piece 4 is shown.
  • the cross-section of the cavity in the four acceleration regions 24, 25, 26, and 27 is expanded in steps to compensate for the decrease in unit length capacitance of the drift tube structure so that the fundamental mode of the cavity can be excited.
  • Fig. 5 shows a schematic plan view of the structured upper steel block 19 of the Driftröhrenbevanters 1, according to Fig. 1 , Components having the same functions as in the previous figures are identified by the same reference numerals and will not be discussed separately. Also for this plan view, the advantage of the flatness of the outer contour of the structured upper steel block 19, whereby an attachment of vacuum flanges and vacuum feedthroughs and the welding of a cooling water channel is facilitated.
  • Fig. 6 shows a schematic cross-section of a transition from the structured upper steel block 19 on the center piece 4 of the Driftröhrenbevanters 1 according to Fig. 1 ,
  • This detailed drawing Fig. 6 shows the intensive cooling of the longitudinal rib 11 through the cooling water channel 31, via which the heat loss from the arranged in the longitudinal groove 12 Driftrohrhalter can be delivered to the center piece 4.
  • the longitudinal rib 11 is welded to the inner wall 10 of the center piece 4 to form the cooling water passage 31, and the longitudinal groove 12 is inserted after welding to compensate for welding stresses and weld distortions.
  • cooling water channel 33 on the outer surface 32 of the structured upper steel block 19 is shown here only by way of example, in the form of a 4 mm high and 240 mm wide cooling water channel, which is achieved by welding an outer sheet on the structured upper steel block 19.
  • the cooling effect can be further intensified by having both the middle piece 4 and the structured upper steel block 19 additionally having cooling water channels milled into the material.
  • Fig. 7 shows a schematic cross section through the Drift tube accelerator 1, according to Fig. 1 in the area of a drift tube holder 13.
  • Components having the same functions as in the preceding figures are identified by the same reference numerals and are not discussed separately.
  • relatively large pumping nozzles are incorporated into the upper and lower structured steel blocks 19 and 15, respectively, to evacuate the drift tube accelerator cavity to 10 -5 Pascal.
  • the Driftrohrhalter 13 are secured in the longitudinal groove 12 of the cooled longitudinal rib 11.
  • Fig. 8 shows a schematic cross section through the drift tube accelerator 1 according to Fig. 1 in the region of a focusing device 17.
  • the focusing device 17 stands on the flat inner bottom 16 of the lower structured steel block 15, which replaces the conventional half-shell according to the invention.
  • Via the vacuum feedthrough 18, the focussing device 17 of a quadrupole triplet lens is supplied with power and cooling water.
  • Components having the same functions as in the previous figures are identified by the same reference numerals and will not be discussed separately.
  • Fig. 9 shows a schematic perspective view of a Driftröhrenbevanters 1, according to Fig. 1 in the region of a focusing device 17.
  • the focusing device 17 in the form of a triplet lens is arranged in a water-cooled housing 37.
  • the cross-section of the cavity is adapted to the size of the triplet lens, wherein the wall thickness of the center piece 4 is reduced and the base surface of the inner bottom 16 in the region of the focusing device 17 is increased.
  • Fig. 10 shows a longitudinal section through a focusing device 17 of the Driftröhrenbevanters 1, according to Fig. 1 , Components having the same functions as in the previous figures are identified by the same reference numerals and will not be discussed separately.
  • a subsequent correction of the longitudinal axis 7 is possible by a mechanical post-processing of the tuning plate 38 inserted here, wherein an accuracy of a few micrometers can be achieved.
  • This is possible because a flat inner bottom 16 is provided in the lower structured steel block 15 for the positioning and adjustment of the triplet lenses in the present invention.
  • Fig. 11 shows a longitudinal section through the center piece 4 in the region of the focusing device 17 of Fig. 10 , Components having the same functions as in the previous figures are identified by the same reference numerals and will not be discussed separately.
  • This longitudinal section shows that the Triplett lens is arranged without any lateral support on the center piece 4 on the flat inner bottom 16 of the lower structured steel block 15 such that the axis of the triplet lens is aligned exactly to the beam axis, without lateral support aids are required to the center piece 4.

Claims (13)

  1. Accélérateur à tubes de glissement pour l'accélération de paquets d'ions dans des installations d'accélération de faisceaux d'ions, qui présente les caractéristiques suivantes:
    - un boîtier (2) composé d'une enceinte à vide (3) en trois parties, divisée dans le sens de la longueur, comprenant:
    - une partie centrale (4),
    - une demi-coque inférieure (5), et
    - une demi-coque supérieure (6),
    la partie centrale (4) présentant, sur son axe longitudinal (7) guidant les faisceaux d'ions, une ouverture d'entrée (8) et une ouverture de sortie (9) pour les paquets d'ions ; et des nervures longitudinales (11), mutuellement en vis-à-vis, étant disposées sur sa paroi intérieure (10), nervures qui portent des supports de tube de glissement (13) disposés en alternance, lesquels portent à leur tour des tronçons de tube de glissement (14) de façon coaxiale avec l'axe longitudinal (7) guidant les faisceaux d'ions ; et la partie centrale (4) étant montée de façon amovible sur la demi-coque inférieure (5) et étant recouverte de façon amovible par la demi-coque supérieure (6),
    caractérisé en ce que la demi-coque inférieure (5) présente un bloc d'acier (15) structuré qui comporte un fond intérieur (16) partiellement plan, sur lequel sont disposés des passages de vide (18), et la demi-coque supérieure (6) présente également un bloc d'acier (19) structuré qui présente une surface de recouvrement interne (20) partiellement plane, dotée de passages de vide (18), de sorte que, en raison des blocs d'acier supérieur (19) et inférieur (15) structurés, l'accélérateur à tubes de glissement possède une stabilité propre.
  2. Accélérateur à tubes de glissement selon la revendication 1, caractérisé en ce que l'enceinte à vide (3) présente au moins deux zones internes (24, 25) dans lesquelles sont disposés les tubes de glissement (14), avec des supports de tube de glissement (14) disposés en alternance, un tube de glissement spécial, contenant un dispositif de focalisation (17) pour la focalisation transversale des faisceaux d'ions, étant disposé respectivement entre les zones, posé sur le fond intérieur (16) partiellement plan du bloc d'acier inférieur (15) structuré, de manière à ce qu'il entoure l'axe longitudinal (7) de la partie centrale (4).
  3. Accélérateur à tubes de glissement selon la revendication 2, caractérisé en ce que sont contenus en tant que dispositifs de focalisation (17), des aimants quadripolaires qui sont disposés en tant que singulets ou en tant que multiplets dans les tubes de glissement spéciaux.
  4. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que le bloc d'acier inférieur (15) structuré ou le bloc d'acier supérieur (19) structuré ou les blocs d'acier inférieur et supérieur (15, 19) structurés présentent, le long des dispositifs de focalisation (17), une section transversale différente de celle le long des zones dans lesquelles les tubes de glissement (14) sont disposés avec des supports de tube de glissement (13) installés en alternance.
  5. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que les tubes de glissement (14) sont disposés avec des supports de tube de glissement (13) montés en alternance, avec des distances de centre à centre qui augmentent dans la direction du faisceau.
  6. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que le bloc d'acier inférieur (15) structuré ou le bloc d'acier supérieur (19) structuré ou les blocs d'acier inférieur et supérieur (15, 19) structurés présentent des cavités qui élargissent la section transversale de l'enceinte à vide (3) dans certaines portions.
  7. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que le bloc d'acier inférieur (15) structuré ou le bloc d'acier supérieur (19) structuré ou les blocs d'acier inférieur et supérieur (15, 19) structurés présentent des cavités qui élargissent la section transversale de l'enceinte à vide (3) graduellement dans certaines portions.
  8. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que des éléments d'accord (38) supplémentaires dont disposés sur le fond intérieur partiellement plan du bloc d'acier inférieur (15) structuré ou sur la surface de recouvrement (20) interne partiellement plane du bloc d'acier supérieur (19) structuré ou sur le fond intérieur partiellement plan du bloc d'acier inférieur (15) structuré et sur la surface de recouvrement (20) interne partiellement plane du bloc d'acier supérieur (19) structuré.
  9. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que les supports de tube de glissement ((14)) (13) disposés en alternance sont guidés dans des rainures longitudinales (12), parallèlement à l'axe longitudinal (7), dans les nervures longitudinales (11) de la partie centrale (4).
  10. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que les nervures longitudinales (11) présentent un conduit d'eau de refroidissement (31) dans le sens longitudinal.
  11. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que la partie centrale (4) présente des conduits d'eau de refroidissement supplémentaires dans les faces frontales.
  12. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que les blocs d'acier inférieur et supérieur (15, 19) structurés présentent des passages d'eau de refroidissement (33) qui sont disposés sur leurs faces extérieures (32).
  13. Accélérateur à tubes de glissement selon l'une des revendications précédentes, caractérisé en ce que les blocs d'acier inférieur et supérieur (15, 19) structurés présentent des épaisseurs de paroi minimales de 10 mm.
EP04015387.6A 2003-07-22 2004-06-30 Accélérateur à tubes de glissement pour l'accélération de paquets d'ions Active EP1505855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333454A DE10333454B4 (de) 2003-07-22 2003-07-22 Driftröhrenbeschleuniger zur Beschleunigung von Ionenpaketen
DE10333454 2003-07-22

Publications (3)

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EP1505855A3 EP1505855A3 (fr) 2009-09-23
EP1505855B1 true EP1505855B1 (fr) 2017-01-11

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EP (1) EP1505855B1 (fr)
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JP4194105B2 (ja) * 2005-09-26 2008-12-10 独立行政法人放射線医学総合研究所 Ｈモード・ドリフトチューブ線形加速器及びその設計方法
JP2010277942A (ja) * 2009-06-01 2010-12-09 Mitsubishi Electric Corp Ｈモード型ドリフトチューブ線形加速器、およびその電場分布調整方法
CN102907182A (zh) * 2010-05-18 2013-01-30 欧洲原子能研究组织 安装机构
WO2012008255A1 (fr) * 2010-07-12 2012-01-19 三菱電機株式会社 Accélérateur linéaire à tube de glissement
CN102348320A (zh) * 2011-10-01 2012-02-08 中国科学院近代物理研究所 非圆断面薄壁真空管道及非圆断面薄壁真空室
CN109413832B (zh) * 2018-10-30 2020-06-19 清华大学 采用永磁四极磁铁的交叉指型纵磁模漂移管直线加速器

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US20050029970A1 (en) 2005-02-10
JP4636468B2 (ja) 2011-02-23
US7081723B2 (en) 2006-07-25
EP1505855A2 (fr) 2005-02-09
JP2005044808A (ja) 2005-02-17
EP1505855A3 (fr) 2009-09-23
DE10333454B4 (de) 2006-07-13
DE10333454A1 (de) 2005-06-16

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