Author: Desmons, M.
Paper Title Page
WEPMF004 The Saclay Test Stand for Conditioning the ESS RFQ Power Couplers at High RF Power 2375
 
  • N. Misiara, A.C. Chauveau, D. Chirpaz-Cerbat, P. Daniel-Thomas, M. Lacroix, L. Maurice
    CEA/IRFU, Gif-sur-Yvette, France
  • M. Desmons, A. Dubois, A. Gaget, L. Napoly, M. Oublaid, G. Perreu, O. Piquet, B. Pottin, Y. Sauce
    CEA/DRF/IRFU, Gif-sur-Yvette, France
 
  The RF power coupler system for the RFQ of the ESS LINAC will feed 1.6 MW peak power through two coaxial loop couplers for a 352.21 MHz operation at the expected duty cycle. A specific test stand has been designed to condition the power couplers, and test the different auxiliary components in the nominal conditions of the RFQ. The power couplers were successfully assembled, installed and instrumented on the test cavity. This paper presents the general layout of the test stand, the installation and preparation of the power couplers for their conditioning at high RF power up to the ESS nominal conditions.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-WEPMF004  
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TUPAF016 Increase of IPHI Beam Power at CEA Saclay 694
 
  • F. Senée, F. Benedetti, E. Giner-Demange, A. Gomes, M. Oublaid
    CEA/DRF/IRFU, Gif-sur-Yvette, France
  • P. Ausset, M. Ben Abdillah, C. Joly
    IPN, Orsay, France
  • F. Belloni, B. Bolzon, N. Chauvin, M. Desmons, Y. Gauthier, C. Marchand, J. Marroncle, T. Papaevangelou, G. Perreu, O. Piquet, B. Pottin, Y. Sauce, J. Schwindling, L. Segui, O. Tuske, D. Uriot
    CEA/IRFU, Gif-sur-Yvette, France
  • F. Harrault, R. Touzery
    CEA/DSM/IRFU, France
 
  For the first time, in April 2016, the SILHI source produced a proton beam for IPHI RFQ. Due to several technical difficulties on the RFQ water cooling skid, a short RF power pulse (100 µs at the beginning until few hundred microseconds) is injected into the RFQ accelerates the high intensity proton beam up to 3 MeV. The repetition rate is tuned between 1 and 5 Hz. Under these conditions, the beam power after the RFQ is lower than 100 W. At the end of 2017, the 352 MHz RFQ conditioning has been completed (with the same duty cycle) and the proton beam has been accelerated. The increase of the beam power is expected to continue in 2018 in order to reach several kilowatts by the end of the year. In addition, two Ionization beam Profile Monitors (IPM) developed for ESS have been tested on the deviated beam line with a very low duty cycle. The IPHI facility should demonstrate the possibility to produce neutrons with a flexible compact accelerator in the framework of the SONATE project. This paper presents the status of the IPHI project in April 2018.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAF016  
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TUPAF068 Functional Integration of the RFQ in the ESS Systems 890
 
  • J.S. Schmidt, E. Bargalló, T. Fay, G. Hulla, B. Lagoguez, R. Montaño, E. Sargsyan, S. Scolari, H. Spoelstra
    ESS, Lund, Sweden
  • A.C. Chauveau, M. Desmons, O. Piquet
    CEA/IRFU, Gif-sur-Yvette, France
  • A.J. Johansson
    Lund University, Lund, Sweden
  • W. Ledda
    Vitrociset s.p.a, Roma, Italy
 
  The 352 MHz Radio Frequency Quadrupole (RFQ) for the European Spallation Source ERIC (ESS) will be delivered during 2018. After delivery, installation and tuning of the cavity, the high power RF conditioning will be performed. At this point all the different systems that are needed to condition and operate the RFQ have to be in place and operational. This paper will give an overview of the system analysis that has been performed for the RFQ. The RFQ requirements for the RF system, including the RF distribution system (RFDS), the Low Level RF (LLRF) and the local RF protection system (RFLPS) will be presented. In addition, the paper covers the system integration of the structure in the ESS control and vacuum systems as well as the outcome of a machine protection analysis.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-TUPAF068  
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