Keyword: solenoid
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MOOAMH03 Optimization Of Low-Energy Beam Transport emittance, ion, ECRIS, dipole 33
 
  • H.R. Kremers, J.P.M. Beijers, S. Brandenburg
    KVI, Groningen, The Netherlands
 
  We have studied the extraction and transport of a low-energy ion beam between an Electron Cyclotron Resonance (ECR) Ion Source and the analyzing magnet. This first part of the transport line is particularly sensitive to emittance blowup caused by ion-optical aberrations and non-paraxiality of the beam. This can be prevented by an appropriate focussing element between ion source and analyzing magnet. We present the results of beam transport simulations for different focussing elements including an einzel lens, solenoid and quadrupole element. These calculations, verified by measurements, lead to a design of an optimal, low-energy beam transport line for ion beams with large beam divergences.  
slides icon Slides MOOAMH03 [2.910 MB]  
 
MOPPH018 A Microwave Ion Source for Pulsed Proton Beam Production at ESS-Bilbao plasma, extraction, proton, ion 75
 
  • R. Miracoli, I. Arredondo, D. Belver, I. Bustinduy, J. Corres, P. Echevarria, M. Eguiraun, N. Garmendia, P.J. González, Z. Izaola, L. Muguira, I. Rueda
    ESS Bilbao, Zamudio, Spain
 
  Ion Source Hydrogen Positive (ISHP) is a 2.7 GHz microwave discharge installed at ESS Bilbao in Spain. This source will be employed in future application of high proton current in the field of research projects and for industrial processes. ISHP produces over 30 mA of pulsed proton beam by operating at 2.7 GHz. The magnetic field is produced by two independently movable coil pair and the extraction system is composed of a plasma electrode at high voltage platform potential, two ground electrodes, and a negatively biased screening electrode inserted between the ground electrodes. The last three electrodes are contained in the extraction column, and can be moved as a group by stepper motors, to change the distance between the plasma electrode and first ground electrode. Measurements with different extraction system setups will be described to show the improvement of the beam intensity and beam emittance.