Author: Tarkeshian, R.
Paper Title Page
MO2C2 Beam Tuning Studies in the ESS MEBT 6
  • N. Milas, M. Akhyani, R.A. Baron, C.S. Derrez, M. Eshraqi, Y. Levinsen, R. Miyamoto, D. Noll, R. Tarkeshian, I. Vojskovic, R.H. Zeng
    ESS, Lund, Sweden
  The European Spallation Source (ESS), currently under construction and initial commissioning in Lund, Sweden, will be the brightest spallation neutron source in the world, when its driving proton linac achieves the design power of 5 MW at 2 GeV. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making design and beam commissioning of this machine challenging. During the the commissioning time in 2022 a campaign for a full characterisation of the ESS Medium Beta Transport session (MEBT) was carried out. Both transverse optics and longitudinal parameters were measured and compared to simulation, amongst them: buncher cavity tunning, trasnverse emittance and initial twiss parameters. In this paper we present the results and future plans.  
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DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MO2C2  
About • Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 07 November 2022
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MOP07 Beam Instrumentation Performance During Commissioning of the ESS RFQ, MEBT and DTL 32
  • T.J. Shea, R.A. Baron, C.S. Derrez, E.M. Donegani, V. Grishin, H. Hassanzadegan, I. Kittelmann, H. Kocevar, N. Milas, D. Noll, H.A. Silva, R. Tarkeshian, C.A. Thomas
    ESS, Lund, Sweden
  • I. Bustinduy
    ESS Bilbao, Zamudio, Spain
  • M. Ferianis
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
  • T. Papaevangelou, L. Seguí
    CEA-IRFU, Gif-sur-Yvette, France
  In late 2021 through mid 2022, the first protons were accelerated and transported through the European Spallation Source (ESS) Radio Frequency Quadrupole and Medium Energy Transport line at 3.6 MeV, and finally through the first Drift Tube Linac tank at 21 MeV. To enable these achievements, the following beam instrumentation systems were deployed: Ion Source power supply monitors, beam chopping systems, Faraday Cups, Beam Current Monitors (BCM) and Beam Position Monitors (BPM) that also measured phase. Additional systems were deployed for dedicated studies, including Wire Scanners, a slit and grid Emittance Measurement Unit, neutron Beam Loss Monitors and fast BCM and BPM systems. The instrumentation deployment is the culmination of efforts by a partnership of the ESS beam diagnostics section, multiple ESS groups and institutes across the globe. This paper summarizes the beam tests that characterized the performance of the instrumentation systems and verified the achievement of commissioning goals.  
poster icon Poster MOP07 [5.388 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP07  
About • Received ※ 30 August 2022 — Accepted ※ 15 September 2022 — Issue date ※ 07 November 2022  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)