Keyword: background
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TUPP037 Transverse Emittance Measurements of the REX-ISOLDE Beams in Preparation for the HIE-ISOLDE Commissioning emittance, quadrupole, linac, ion 513
 
  • D. Voulot, M.A. Fraser, D. Lanaia
    CERN, Geneva, Switzerland
  • T. Olsson
    MAX-lab, Lund, Sweden
 
  The transverse emittance at the output of the REX-ISOLDE normal conducting linac has been measured at different energies in order to characterise the beam at injection to the future HIE-ISOLDE superconducting linac. The measurements were done with low intensity stable beams (~0.5 enA) in order to avoid compensation effects in the EBIS ion source and obtain representative measurements of the radioactive ion beam emittance. Emittances were measured using a slit-grid emittance meter and compared with results obtained with a quadrupole-scan (three-gradient) method. An analysis of the background suppression is presented and possible source of errors for both type of measurements are discussed.  
poster icon Poster TUPP037 [2.084 MB]  
 
THIOC01 SPIRAL2 Bunch Extension Monitor cryomodule, detector, cavity, linac 824
 
  • R.V. Revenko, J.L. Vignet
    GANIL, Caen, France
 
  Funding: The work is funded in frame of CRISP WP3T1
Superconducting linacs require beam diagnostics to quantify the time extension of the bunch for a proper beam adaptation. Bunch extension monitor (BEM) should provide measurements with required resolution and minimal disturbance of beam properties, have a broad dynamic range of beam intensity and should be easy to use for accelerator routine operation. The design of BEM should take into account operation at the vicinity of cryomodules and satisfy imposed requirements for this. BEM measures the x-rays resulting of the bunch interaction with a tungsten wire. Developed prototype of detector was successfully tested with ions beams. Test for detector background conditions at vicinity of cryomodule was carried out and results are presented.
 
slides icon Slides THIOC01 [7.054 MB]