TUC1I —  Invited Presentations WG B   (10-Oct-23   08:55—10:45)
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TUC1I1 Multi-beam Operation of LANSCE Accelerator Facility 58
 
  • Y.K. Batygin
    LANL, Los Alamos, New Mexico, USA
  
  The unique feature of the LANSCE accelerator facility is the simultaneous delivering of beams to five experimental targets. Proton beam with energy of 100-MeV is delivered to Isotope Production Facility (IPF), while 800-MeV H⁻ beams are distributed to four experimental areas: the Lujan Neutron Scattering Center, the Weapons Neutron Research facility (WNR), the Proton Radiography facility (pRad), and the Ultra-Cold Neutron facility (UCN). Multi-beam operation of accelerator facility requires careful optimization of beam losses, which is achieved by precise tuning of the beam, imposing restriction on amplitudes and phases of RF sections, application of beam-based alignment, control of H⁻ beam stripping, optimization of ion sources performance and low-energy beam transport operation under space-charge neutralization. The near - term plans are to replace obsolete systems of the LANSCE linear accelerator with modern Front End, which is the part of Los Alamos Modernization Project (LAMP). This paper summarizes experimental results obtained during operation of LANSCE accelerator facility and considers plans to expand performance of the accelerator for near-and long-term operations.  
slides icon Slides TUC1I1 [10.013 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-HB2023-TUC1I1  
About • Received ※ 30 September 2023 — Revised ※ 05 October 2023 — Accepted ※ 09 October 2023 — Issued ※ 31 October 2023
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TUC1I2
 30 kW Beam Commissioning of the High-Intensity Proton Accelerator IPHI: Experiments, Simulations and Space Charge  
 
  • N. Chauvin, B. Bolzon, A.C. Chauveau, D. Chirpaz, M.J. Desmons, A. Dubois, Y. Gauthier, E.G.D. Giner-Demange, T. Hamelin, M. Oublaid, T. Papaevangelou, G. Perreu, B. Pottin, Y. Sauce, J. Schwindling, L. Seguí, F. Senée, L. Thulliez, O. Tuske, D.U. Uriot
    CEA-IRFU, Gif-sur-Yvette, France
  • B. Annighöfer, A. Menelle, F. Ott
    LLB, Gif-Sur-Yvette, France
  
  Over the past few years, CEA-Saclay has been actively engaged in R&D activities focused on high-intensity proton and deuteron beams. In particular, the high-intensity proton injector IPHI has been designed and developed with the primary objective of accelerating a continuous beam of 100 mA to 3 MeV. This machine consists of a high-intensity ECR ion source, a low-energy beam line, a 352 MHz RFQ, and a medium-energy transport line equipped with diagnostics. The commissioning of the IPHI facility started several years ago with a proton beam operating at a low duty cycle (0.1%) and a current of 65 mA. Since then, significant progress has been made, resulting in an accelerated beam power exceeding 30 kW. Following this achievement, a neutron production target with a polyethylene moderator was installed and successfully operated. In addition, extensive measurements have been conducted to thoroughly characterize the beam accelerated by IPHI and its transport through the beam lines. We have developed an end-to-end numerical model of the IPHI accelerator and validated it against experimental data. The simulation results are compared with the measured values and discussed in detail.  
slides icon Slides TUC1I2 [5.582 MB]  
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