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

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.
Authors:
; ; ; ; ;  [1] ;  [1] ;  [2] ; ;  [3] ;  [4] ;  [1] ;  [2] ; ;  [1] ;  [2]
  1. Laboratori Nazionali del Sud, Istituto Nazionale di Fisica Nucleare, Via S. Sofia 62, 95123 Catania (Italy)
  2. (Italy)
  3. European Spallation Source ESS AB, Lund (Sweden)
  4. Laboratori Nazionali di Legnaro, Istituto Nazionale di Fisica Nucleare, Viale dell'università 2, 35020 Legnaro (Italy)
Publication Date:
OSTI Identifier:
22253884
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATORS; BEAM TRANSPORT; COLLIMATORS; DESIGN; HIGH-FREQUENCY DISCHARGES; ION SOURCES; OPTIMIZATION; PLASMA DIAGNOSTICS; PROTON BEAMS; PROTON SOURCES; RADIOWAVE RADIATION; SPALLATION