Author: Villamayor, V.
Paper Title Page
MOBO03
Overview of LIPAc Beam Instrumentation for the Initial Accelerator Commissioning  
 
  • D. Jimenez-Rey, J. Castellanos, J.M. García, D. Gavela, A. Ibarra, A. Marqueta, L.M. Martínez, J. Mollá, I. Podadera, A. Ros, R. Varela, V. Villamayor
    CIEMAT, Madrid, Spain
  • P. Abbon, B. Bolzon, T. Chaminade, J.F. Denis, A. Gaget
    CEA-DRF-IRFU, France
  • T. Akagi, K. Kondo, K. Sakamoto, Y. Shimosaki, M. Sugimoto, S. Takahiro
    QST, Aomori, Japan
  • L. Bellan, M. Comunian, E. Fagotti, F. Grespan, M. Poggi, F. Scantamburlo
    INFN/LNL, Legnaro (PD), Italy
  • P. Cara, A. Marqueta
    Fusion for Energy, Garching, Germany
  • Y. Carin, H. Dzitko, A. Jokinen, I.M. Moya
    F4E, Germany
  • J. Marroncle
    CEA-IRFU, Gif-sur-Yvette, France
  • O. Nomen
    IREC, Sant Adria del Besos, Spain
  • A. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  Funding: This work has been supported by the Spanish Government in the frame of the Broader Approach Agreement
The commissioning of the high power deuterium accelerator of Linear IFMIF Prototype Accelerator, LIPAc, is presently under progress. During the so-called Phase B, the accelerator is operating with a high current pulsed proton and deuteron. The Phase B operation has the goals of fulfilling an exhaustive characterization of equipment and machine parameters in pulsed beam operation up to 5 MeV and 125 mA at Low Duty Cycle. The LIPAc beam diagnostics are aimed to demonstrate at this first stage of the commissioning the correct performance of the accelerator and are used for a complete characterization of the accelerator matching and tuning parameters. The characterization and calibration of beam diagnostics developed are providing relevant feedback of the accelerator operation. Measurements of the centroid position, beam profile, energy, intensity or emittance have been acquired and analyzed. The experimental results gathered have been compared with beam dynamics simulations. In this contribution, an overview of the main results provided by the beam diagnostics during Phase B operation in proton will be shown, together with the status of each instrument.
 
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MOPP042 Beam Diagnostics for the Multi-MW High Energy Beam Transport Line of DONES 201
 
  • I. Podadera, A. Ibarra, D. Jiménez-Rey, J. Mollá, C. Oliver, R. Varela, V. Villamayor
    CIEMAT, Madrid, Spain
  • O. Nomen, D. Sánchez-Herranz
    IREC, Sant Adria del Besos, Spain
 
  Funding: Work carried out within the framework of the EUROfusion Consortium and funded from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No 633053.
In the frame of the material research for future fusion reactors, the construction of a simplified version of the IFMIF plant, the so-called DONES (Demo-Oriented Neutron Early Source), is under preparatory phase to allow materials testing with sufficient radiation damage for the new design of DEMO. The DONES accelerator system will deliver a deuteron beam at 40 MeV, 125 mA. The 5 MW beam will impact onto a lithium flow target to form an intense neutron source. One of the most critical tasks of the accelerator is the beam diagnostics along high energy beam transport, especially in the high radiation areas close to the lithium target. This instrumentation is essential to provide the relevant data for ensuring the high availability of the whole accelerator system, the beam characteristics and machine protection. Of outmost importance is the control of the beam characteristics impinging on the lithium curtain. Several challenging diagnostics are being designed and tested for that purpose. This contribution will report the present status of the design of the beam diagnostics, focusing on the high radiation areas of the high energy beam transport line.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-MOPP042  
About • paper received ※ 04 September 2019       paper accepted ※ 07 September 2019       issue date ※ 10 November 2019  
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TUPP006 Transverse Emittance Measurement of a 2.5 MeV Proton Beam on LIPAc, IFMIF’s Prototype 283
 
  • J. Marroncle, P. Abbon, B. Bolzon, T. Chaminade, N. Chauvin, S. Chel, J.F. Denis, A. Gaget
    CEA-DRF-IRFU, France
  • T. Akagi, K. Kondo, M. Sugimoto
    QST, Aomori, Japan
  • L. Bellan, M. Comunian, E. Fagotti, F. Grespan, A. Pisent, F. Scantamburlo
    INFN/LNL, Legnaro (PD), Italy
  • P. Cara
    IFMIF/EVEDA, Rokkasho, Japan
  • H. Dzitko, D. Gex, A. Jokinen
    F4E, Germany
  • J.M. García, D. Jiménez-Rey, A. Ros, V. Villamayor
    CIEMAT, Madrid, Spain
  • A. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  IFMIF (International Fusion Materials Irradiation Fa-cility) is an accelerator-driven neutron source aiming at testing fusion reactor materials. Under the Broader Ap-proach Agreement, a 125 mA / 9 MeV CW deuteron accelerator called LIPAc (Linear IFMIF Prototype Accel-erator) is currently under installation and commissioning at Rokkasho, Japan, to validate the IFMIF accelerator. During the beam commissioning at 5 MeV which started in June 2018, the horizontal and vertical transverse emit-tance of a 2.5 MeV proton beam have been measured downstream of the RFQ for different machine configura-tions. Such measurements were done with an emittance measurement unit composed of slits defining a beamlet of 200 µm width, then of steerers and finally of a SEM grids monitor. In this paper, the process and the system are first described. The secondary electron emission of SEM-Grid wires is then estimated based on measure-ments and results are close to the usual rule of thumb. Finally, emittance measurements are presented and comparisons with beam dynamics simulations show good agreement.  
poster icon Poster TUPP006 [1.974 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-TUPP006  
About • paper received ※ 02 September 2019       paper accepted ※ 08 September 2019       issue date ※ 10 November 2019  
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WEPP013 Beam Commissioning of Beam Position and Phase Monitors for LIPAc 527
 
  • I. Podadera, D. Gavela, A. Guirao, D. Jiménez-Rey, L.M. Martínez, J. Mollá, C. Oliver, R. Varela, V. Villamayor
    CIEMAT, Madrid, Spain
  • T. Akagi, K. Kondo, Y. Shimosaki, T. Shinya, M. Sugimoto
    QST, Aomori, Japan
  • L. Bellan, M. Comunian, F. Grespan, F. Scantamburlo
    INFN/LNL, Legnaro (PD), Italy
  • P. Cara
    IFMIF/EVEDA, Rokkasho, Japan
  • Y. Carin, H. Dzitko, D. Gex, A. Jokinen, I.M. Moya
    F4E, Germany
  • A. Marqueta
    Fusion for Energy, Garching, Germany
  • A. Rodríguez Páramo
    ESS Bilbao, Zamudio, Spain
 
  Funding: Work partially supported by the Spanish Ministry of Science and Innovation under project AIC-A-2011-0654 and FIS2013-40860-R
The LIPAc accelerator is 9-MeV, 125-mA CW deuteron accelerator that aims to validate the technology that will be used in the future IFMIF accelerator (40-MeV, 2 x 125-mA CW). LIPAc is presently under beam commissioning of the second acceleration stage (injector and Radio Frequency Quadrupole) at 5 MeV. In this stage two types of BPM’s are used: four stripline-type to control the transverse position and phase at the Medium Energy Beam Transport line (MEBT), and three other stripline-type mainly for the precise measurements of the mean beam energy at the Diagnostics Plate. All the BPM’s have been successfully tested and served to increase the duty cycle and the average power of the beam delivered down to the beam dump. Moreover, the BPM’s were key devices for the transverse beam positioning and longitudinal beam tuning and validation of the RFQ and re-buncher cavities at the MEBT. In this contribution, an overview of the beam position monitors system installation and characterization in the facility will be reported. First tests of the system with the upgraded acquisition electronics for the next phase will be also presented.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2019-WEPP013  
About • paper received ※ 04 September 2019       paper accepted ※ 09 September 2019       issue date ※ 10 November 2019  
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