| Paper |
Title |
Page |
| MOPC086 |
IFMIF-EVEDA Accelerator: Beam Dump Design
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259 |
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- B. Brañas, F. Arranz, G. Barrera, J. M. Gómez, A. Ibarra, D. Iglesias, C. Oliver
CIEMAT, Madrid
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The IFMIF-EVEDA accelerator will be a 9 MeV, 125 mA cw deuteron accelerator prototype for verifying the validity of the accelerator design for IFMIF. A beam stop will be used for the RFQ and DTL commissioning as well as for the EVEDA accelerator tests. Therefore, this component must be designed to stop 5 MeV and 9 MeV deuteron beams with a maximum power of 1.12 MW. The first step of the design is the beam-facing material selection. The criteria used for this selection are low neutron production, low activation and good thermomechanical behavior. A thermomechanical analysis with ANSYS has been performed for a few materials which show good behavior from the radiological point of view. The input data are the expected beam shape and divergence at the beam dump entrance produced by the high energy beam line quadrupoles, a conical beam stop shape and the preliminary design of the cooling system. As a conclusion of the previous studies a conceptual design of the beam stop will be presented.
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| MOPD024 |
RF Power System for the IFMIF-EVEDA Prototype Accelerator
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496 |
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- I. Kirpitchev, M-A. Falagán, A. Ibarra, P. Méndez, M. Weber
CIEMAT, Madrid
- M. Desmons, A. Mosnier
CEA, Gif-sur-Yvette
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The IFMIF-EVEDA accelerator will be a 9 MeV, 125 mA cw deuteron accelerator prototype for verifying the validity of the accelerator design for IFMIF. The RFQ, matching section and DTL resonant cavities must be fed with continuous RF power at 175 MHz frequency with an accuracy of 1% in amplitude and ± 1° in phase. Currently two possible solutions for the DTL design are considered. The first option consists of normal conducting (NC) Alvarez type cavities and the second option consists of superconducting (SC) Half Wave Resonator cavities. Both options impose different demands on the RF system which are analyzed in this paper. The RF power system will be made of several amplification stages and will be based on vacuum tube amplifiers. The main characteristics of RF system including those of the high voltage power sources required to feed the anodes of the high power tubes will be presented in this paper.
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| TUPC083 |
A Diagnostics Plate for the IFMIF-EVEDA Accelerator
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1248 |
| |
- I. Podadera Aliseda, B. Brañas, J. M. Carmona, A. Ibarra, C. Oliver
CIEMAT, Madrid
- P.-Y. Beauvais, J. Marroncle, A. Mosnier
CEA, Gif-sur-Yvette
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The IFMIF-EVEDA accelerator will be a 9 MeV, 125 mA cw deuteron accelerator which aims to validate the technology that will be used in the future IFMIF accelerator. It is essential then to implement the necessary instrumentation for the commissioning, operation and correct characterization of the beam properties of the accelerator prototype. To achieve this goal, a complete set of instrumentation will be installed in the last part of the accelerator, just before the beam dump, in the so-called Diagnostics Plate (DP). It must allow the measurement of the main parameters of the beam: current, phase, position, transverse profile, energy, transverse halo, transverse emittance and longitudinal profile. The main challenges of such a measurement are the high damage power of the low-energy cw 125 mA beam, which precludes the use of interceptive instrumentation. In addition, the DP will not only be used during operation but also during the commissioning of the different accelerating structures at 5 and 9 MeV. In this contribution, the requirements imposed to the instrumentation, the type of techniques that will be used and a first conceptual design will be presented.
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| THPC028 |
High Energy Beam Transport Line for the IFMIF-EVEDA Accelerator
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3041 |
| |
- C. Oliver, B. Brañas, A. Ibarra, I. Podadera Aliseda
CIEMAT, Madrid
- N. Chauvin, A. Mosnier, D. Uriot
CEA, Gif-sur-Yvette
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The IFMIF-EVEDA accelerator will be a 9 MeV, 125 mA cw deuteron accelerator which will verify the validity of the design of the future IFMIF accelerator. A transport line is necessary to handle the high current beam from the DTL exit up to the beam dump. This line must produce the beam expansion to obtain an acceptable power density at the beam dump. Therefore the design of the transport line must consider the geometry and power handling capacity of the beam dump, the space requirements for diagnostics and the restrictions on the maximum length of the line. In addition, a bending magnet is required in order to avoid excessive irradiation of the diagnostics and line elements by neutrons and gammas produced at the beam dump and to perform energy spread measurements. In this contribution, the preliminary design of the high energy beam transport line will be presented. The results of a sensitivity study to the input beam and line elements errors will also be discussed.
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| THPP077 |
The IFMIF-EVEDA Accelerator Activities
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3539 |
| |
- A. Mosnier
CEA, Gif-sur-Yvette
- A. Facco
INFN/LNL, Legnaro, Padova
- A. Ibarra
CIEMAT, Madrid
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The International Fusion Materials Irradiation Facility (IFMIF) aims at producing an intense flux of 14 MeV neutrons, in order to characterize materials envisaged for future fusion reactors. This facility is based on two high power CW accelerator drivers, each delivering a 125 mA deuteron beam at 40 MeV to the common lithium target. In the framework of the EU-JA Bilateral Agreement for the Broader Approach for Fusion, the Engineering Validation and Engineering Design Activities (EVEDA) phase of IFMIF has been launched in the middle of 2007. The objectives of EVEDA are to produce the detailed design of the entire IFMIF facility, as well as to build and test a number of prototypes, including a high-intensity CW deuteron accelerator (125 mA @ 9 MeV). The major components and subsystems will be designed and developed in Europe, and will be then assembled and operated at Rokkasho in Japan. The individual components are developed in Spain, Italy and France and an european accelerator team has been settled for the coordination of the accelerator activities. The design and the layout of the accelerator are presented as well as the development schedule.
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