Author: Lorey, C.
Paper Title Page
TUPVA071 The MYRRHA-RFQ - Status and First Measurements 2243
 
  • H. Podlech, K. Kümpel, C. Lorey, N.F. Petry, A. Schempp, P.P. Schneider
    IAP, Frankfurt am Main, Germany
  • A. Bechtold
    NTG, Gelnhausen, Germany
  • C. Zhang
    GSI, Darmstadt, Germany
 
  Funding: H2020, European Commission, grant agreement number 662186 (MYRTE)
The MYRRHA project requires a proton linac with an energy of 600 MeV with a beam current of 4 mA in cw operation. As first RF structure a 176 MHz 4-Rod RFQ has been chosen because of tuning possibilities, maintenance, lower capital costs and technological risk compared to a 4-Vane-RFQ. The aim of beam dynamics design was to preserve excellent beam quality and to avoid the creation of halo particles especially in the longitudinal plane. Using the NFSP (New Four-Section Procedure) with a soft and symmetric pre-bunching with full 360° acceptance it was possible to reach the requirements. The simulated transmission of the 4 m long RFQ is close to 100%. The electrode voltage has been chosen to 44 kV which gives enough transverse focusing but limits the required RF losses to about 25 kW/m. The cooling has been optimized for reliable operation and a new method of dipole compensation has been applied. The RFQ has been built and tuned with respect to field flatness. The paper describes the status of the RFQ and first measurements.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA071  
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