Author: Neri, L.
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MOB3 Commissioning of the AISHA Ion Source at INFN-LNS 10
 
  • L. Celona, G. Castro, F. Chines, S. Gammino, O. Leonardi, D. Mascali, M. Mazzaglia, L. Neri, G. Torrisi
    INFN/LNS, Catania, Italy
 
  The AISHa ion source has been designed to generate high brightness multiply charged ion beams with high reliability, easy operations and maintenance for hadrontheraphy applications. Aisha is a compact ECRIS whose hybrid magnetic system consists of a permanent Halbach-type hexapole magnet and a set of independently energized superconducting He-free coils. The present work shows the results of the ion source commissioning in SFH operational mode (18 GHz) for different ion species. Current status and further improvements will be highlighted.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-MOB3  
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TUP12 Results of the Optical Emission Spectroscopy diagnostics of the ESS proton source 107
 
  • G. Castro, L. Celona, S. Gammino, O. Leonardi, D. Mascali, M. Mazzaglia, A. Miraglia, E. Naselli, L. Neri, R. Reitano, G. Torrisi
    INFN/LNS, Catania, Italy
  • E. Naselli
    Catania University, Catania, Italy
  • R. Reitano
    Università degli Studi di Catania, Catania, Italy
 
  The high intensity proton source for the European Spallation Source, designed and commissioned at INFN-LNS, is able to produce a stable total current between 40 and 125 mA through an 8 mm extraction aperture, with a proton fraction up to 87%. The best source condition for PS-ESS requirements has been investigated by means of the Optical Emission Spectroscopy (OES). OES has permitted to evaluate simultaneously the H/H2 relative abundances together with electron density and temperature. Results demonstrated that high intensity proton beams are generated in overdense plasma conditions (around 1018 m-3 electron density measured by OES), while electron temperature shows a decreasing trend with power. The results will be discussed and compared with Faraday-cup and Doppler shift measurements. Further upgrades of OES diagnostics will be highlighted.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUP12  
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THA1
High Intensity Proton Source and LEBT for the European Spallation Source  
 
  • L. Celona, G. Calabrese, G. Castro, F. Chines, S. Gammino, O. Leonardi, G. Manno, D. Mascali, M. Mazzaglia, A. Miraglia, L. Neri, G. Torrisi
    INFN/LNS, Catania, Italy
 
  At the Istituto Nazionale di Fisica Nucleare ' Laboratori Nazionali del Sud (INFN-LNS) the beam commissioning of the high intensity Proton Source (PS-ESS) and the Low Energy Beam Transport (LEBT) line for the European Spallation Source (ESS) has been completed. The official project schedule was satisfied and the source has been installed in the ESS accelerator tunnel on January 2018. Due to the high flexibility of the magnetic system, and to the innovative approach developed for the commissioning, we were able to test a huge amount of configurations (more than 400'000). The optimum source configuration that satisfy all requirements at the same time has been identified. The source is able to produce a stable total current between 40 and 125 mA (90 mA requested) through an 8 mm extraction aperture, with a proton fraction of up to 87%. At the end of the LEBT the beam characteristics fully satisfy the ESS requirements: more than 70 mA of proton beam with 99% normalized beam emittance of 2.25 '.mm.mrad have been transported with intra pulse current fluctuation below ±1.5% and long term current fluctuation below ±3%. Results and used strategy are shown in details.  
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THA3
Strategic Management for Delivery and Installation of Ion Source and Low Energy Beam Transport for ESS Project  
 
  • A. Miraglia, G. Agnello, G. Calabrese, L. Celona, F. Chines, A. D'Agata, S. Gammino, O. Leonardi, G. Manno, S. Marletta, A. Maugeri, L. Neri, R. Papaleo, A. Seminara, D. Siliato
    INFN/LNS, Catania, Italy
 
  At the Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali del Sud (INFN-LNS), the delivery and installation of the high intensity Proton Source for the European Spallation Source (PS-ESS) was completed in February 2018. All planned activities were performed successfully in time without unexpected events and additional costs. The analysis of the environment in which the INFN-LNS operates and the goals to be achieved, allowed to formulate a series of strategic decisions to be undertaken. The next step was the implementation of these decisions on the organi-zation's resources. The paper summarize the day-to-day process and actions adopted for a safe transfer of the equipment and of the knowledge needed for the next operations and for the maintenance the Ion Source.  
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