Author: Tarkeshian, R.
Paper Title Page
TU1I02 Beam Instrumentation Performance During Commissioning of the ESS Normal Conducting LINAC 136
 
  • I.D. Kittelmann, R.A. Baron, E.C. Bergman, E.M. Donegani, V. Grishin, H. Hassanzadegan, H. Kocevar, N. Milas, R. Miyamoto, M. Mohammednezhad, F. Nilen, D. Noll, K.E. Rosengren, T.J. Shea, R. Tarkeshian, C.A. Thomas
    ESS, Lund, Sweden
  
  Once constructed, the European Spallation Source (ESS) will be a 5MW pulsed neutron source based on a 2 GeV proton linac delivering 2.86 ms long pulses at a 14 Hz repetition rate. This paper focuses on the beam instrumentation performance during the recent linac beam commissioning up to drift tube linac (DTL) tank 4 with 74 MeV output energy. Instrumentation and measurement results will be presented for beam parameters such as current, position, energy, emittance and beam loss.
Proposal by Peter, same proposal as ID 1283 by Wim. Alternative speaker Cyrille Thomas (ESS). 		 
slides icon Slides TU1I02 [6.143 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TU1I02  
About • Received ※ 07 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 01 October 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WEP001 Non-invasive Profilers for the Cold Part of ESS Accelerator 326
 
  • J. Marroncle, P. Abbon, F. Belloni, F. Bénédetti, T. Hamelin, J.-Ph. Mols, L. Scola
    CEA-DRF-IRFU, Grenoble, France
  • B. Bolzon, N. Chauvin, D. Chirpaz-Cerbat, M. Combet, M.J. Desmons, Y. Gauthier, C. Lahonde-Hamdoun, Ph. Legou, O. Leseigneur, Y. Mariette, V. Nadot, M. Oublaid, G. Perreu, F. Popieul, B. Pottin, Y. Sauce, J. Schwindling, F. Senée, O. Tuske, S. Tzvetkov
    CEA-IRFU, Gif-sur-Yvette, France
  • I. Dolenc Kittelmann, A.A. Gevorgyan, H. Kocevar, R. Tarkeshian, C.A. Thomas
    ESS, Lund, Sweden
  
  Several Non-invasive Profile Monitors are being in-stalled along the accelerator to support the commissioning, tuning and operation of the powerful proton based ESS linear accelerator. In the low energy parts of the ESS linac (3.6 MeV to 90 MeV), the residual gas pressure is high enough to measure the transverse beam profile by using fluorescence induced by the beam on the gas molecules. However, in the ESS linac sections above 90 MeV, protons are accelerated by superconductive cavities working at cryogenic temperatures and high vacuum. Therefore, the signal based on the fluorescence process is too weak, while ionization can counteract this drawback. We have provided five IPM (Ionization Profile Monitors) pairs for energies ranging from 100 to 600 MeV. The design of such monitors is challenging due to weak signal (as a result of high proton energy and low pressure <10-9 mbar), tight space constraints inside the vacuum chamber, space charge effect, ISO-5 cleanliness requirement, and electrode polarization at ±15 kV. This publication will detail the development we followed to fulfil the ESS requirements.  
poster icon Poster WEP001 [2.190 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP001  
About • Received ※ 03 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)