ESS Docs Document 350-v1

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Current Status on ESS Medium Energy Beam Transport

Document #:
Document type:
Presentation Slides
Submitted by:
Ryoichi Miyamoto
Updated by:
Ryoichi Miyamoto
Document Created:
26 Nov 2014, 14:46
Contents Revised:
26 Nov 2014, 14:46
Metadata Revised:
26 Nov 2014, 14:46
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The European Spallation Source, ESS, uses a high power linear accelerator for producing intense beams of neutrons. During last year the ESS linac cost was reevaluated, as a consequence important modifications were introduced to the linac design that affected Medium Energy Beam Transport (MEBT) section. RFQ output beam energy increased from 3 MeV to 3.62 MeV, and beam current under nominal conditions was increased from 50 to 62.5mA. The considered MEBT is being designed primarily to match the RFQ output beam characteristics to the DTL input both transversely and longitudinally. For this purpose a set of eleven quadrupoles is used to match the beam characteristics transversely, combined with three 352.2 MHz CCL type buncher cavities, which are used to adjust the beam in order to fulfill the required longitudinal parameters. Finally, thermo-mechanical calculations for adjustable halo scraping blades, with significant impact on the HEBT, will be discussed.
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Notes and Changes:
Presentation in HB'14.
Associated with Events:
HB14 held from 10 Nov 2014 to 14 Nov 2014
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