Improved design of proton source and low energy beam transport line for European Spallation Source.

Research output: Contribution to journalArticle


The design update of the European Spallation Source (ESS) accelerator is almost complete and the construction of the prototype of the microwave discharge ion source able to provide a proton beam current larger than 70 mA to the 3.6 MeV Radio Frequency Quadrupole (RFQ) started. The source named PS-ESS (Proton Source for ESS) was designed with a flexible magnetic system and an extraction system able to merge conservative solutions with significant advances. The ESS injector has taken advantage of recent theoretical updates and new plasma diagnostics tools developed at INFN-LNS (Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare). The design strategy considers the PS-ESS and the low energy beam transport line as a whole, where the proton beam behaves like an almost neutralized non-thermalized plasma. Innovative solutions have been used as hereinafter described. Thermo-mechanical optimization has been performed to withstand the chopped beam and the misaligned focused beam over the RFQ input collimator; the results are reported here.


  • L Neri
  • L Celona
  • S Gammino
  • D Mascali
  • G Castro
  • G Torrisi
  • Benjamin Cheymol
  • A Ponton
  • A Galatà
  • G Patti
  • A Gozzo
  • L Lega
  • G Ciavola
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Sciences
  • Natural Sciences
Original languageEnglish
Article number02A723
JournalReview of Scientific Instruments
Issue number2
Publication statusPublished - 2014
Publication categoryResearch