Author: Duenas, J.A.     [Dueñas, J.A.]
Paper Title Page
WEPMN052 A New RF Laboratory for Developing Accelerator Cavities at the University of Huelva 3046
 
  • I. Martel, C. Bonțoiu, J.A. Dueñas, D. Gordo-Yáñez, A.K. Orduz, J. Sanchez-Segovia
    University of Huelva, Huelva, Spain
  
  The University of Huelva is presently involved in R&D projects for developing RF accelerator cavities. Two types of cavities are presently under design, a prototype of room temperature RFQ injector and a quarter-wave resonator for high intensity heavy-ion linear accelerators. The laboratory is equipped with dedicated test-bench for RF measurements, which includes high-power RF generators, network analyzer, amplifiers and power meters. A clean room is also available having a dedicated space for high-precision mechanical metrology and cavity mounting, together with a vertical cryostat for superconducting cavity test.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN052  
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THPF076 Thermal and Structural Analysis of the 72.75 MHz LINCE RFQ 3857
 
  • A.K. Orduz, A. Berjillos, C. Bonțoiu, J.A. Dueñas, I. Martel
    University of Huelva, Huelva, Spain
  • A. Garbayo
    AVS, Elgoibar, Spain
  
  Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA.
The 72.75 MHz LINCE RFQ is designed to function at room temperature. Effective operation of the RFQ cavity requires efficient water cooling in order to dissipate significant resistive power non-uniformly distributed on the copper walls and vanes. This amounts to about 10 kWfor one 0.5m long RFQ section. Cylindrical cooling channels have been designed and optimized by varying their diameter and position in order to minimize the frequency shift generated by thermal displacements. The article reports results of power loss simulations coupled with electromagnetic modelling studies and their consequences on the RFQ performance in terms of resonant frequency and thermal deformations. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF076  
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THPF077 Proposal for a 72.75 MHz RFQ for the LINCE Accelerator Complex 3861
 
  • A.K. Orduz, A. Berjillos, C. Bonțoiu, J.A. Dueñas, I. Martel
    University of Huelva, Huelva, Spain
  • A. Garbayo
    AVS, Elgoibar, Spain
  
  Funding: Work partially supported by the Spanish Government (MINECO-CDTI) under program FEDER INTERCONNECTA
The low-energy part of the LINCE facility can be based on a 72.75MHz normal-conducting RFQ designed to give a 450 keV/u boost for A/Q=7 ions in about 5m length. The vanes have been electromagnetically designed to accommodate dedicated RF windows producing effective separation of the RFQ modes in an octagonal-shaped resonance chamber. This article outlines the optimization of the quality factor of the cavity by using numerical methods for electromagnetic calculations. Experimental results of RF test carried out on a prototype are also discussed. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF077  
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