Keyword: LEBT
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MOP05 Reduction of the Beam Jitter at the PIP2IT Test Accelerator MEBT, ion-source, ECR, high-voltage 35
 
  • A.V. Shemyakin, G.W. Saewert, A. Saini
    Fermilab, Batavia, Illinois, USA
 
  Funding: This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics.
Analysis of the beam position monitor (BPM) signals at the H test linear accelerator PIP2IT showed that a large portion of the signals scatter comes from the beam jitter. BPM position measurements of the jitter modes were compared with beam motion responses to perturbations excited by driving various beamline parameters in a low frequency sinusoidal manner. The main contributor to the jitter was found to be a low frequency noise in the input reference to the ion source high voltage (HV) power supply. Filtering the HV power supply reference signal decreased the rms scatter in BPM readings by a factor of 2-3.
 
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slides icon Slides MOP05 [0.852 MB]  
poster icon Poster MOP05 [0.852 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2021-MOP05  
About • Received ※ 30 September 2021 — Revised ※ 19 October 2021 — Accepted ※ 04 March 2022 — Issue date ※ 11 April 2022
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WEBC3 MYRRHA-MINERVA Injector Status and Commissioning rfq, cavity, linac, MMI 186
 
  • A. Gatera, J. Belmans, S. Boussa, F. Davin, W. De Cock, V.R.A. De florio, F. Doucet, L. Parez, F. Pompon, A. Ponton, D. Vandeplassche, E. Verhagen
    SCK•CEN, Mol, Belgium
  • Dr. Ben Abdillah, C. Joly, L. Perrot
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • F. Bouly, E. Froidefond, A. Plaçais
    LPSC, Grenoble Cedex, France
  • H. Podlech
    IAP, Frankfurt am Main, Germany
  • J. Tamura
    JAEA/J-PARC, Tokai-mura, Japan
  • C. Zhang
    GSI, Darmstadt, Germany
 
  The MYRRHA project at SCK•CEN, Belgium, aims at coupling a 600 MeV proton accelerator to a subcritical fission core operating at a thermal power of 60 MW. The nominal proton beam for this ADS has an intensity of 4 mA and is delivered in a quasi-CW mode. MYRRHA’s linac is designed to be fault tolerant thanks to redundancy implemented in parallel at low energy and serially in the superconducting linac. Phase 1 of the project, named MINERVA, will realise a 100 MeV, 4 mA superconducting linac with the mission of demonstrating the ADS requirements in terms of reliability and of fault tolerance. As part of the reliability optimisation program the integrated prototyping of the MINERVA injector is ongoing at SCK•CEN in Louvain-la-Neuve, Belgium. The injector test stand aims at testing sequentially all the elements composing the front-end of the injector. This contribution will highlight the beam dynamics choices in MINERVA’s injector and their impact on ongoing commissioning activities.
*angelique.gatera@sckcen.be
 
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slides icon Slides WEBC3 [3.128 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2021-WEBC3  
About • Received ※ 14 October 2021 — Revised ※ 21 October 2021 — Accepted ※ 22 November 2021 — Issue date ※ 28 December 2021
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THDC2 Commissioning of the ESS Front End solenoid, MMI, rfq, emittance 225
 
  • N. Milas, C.S. Derrez, E.M. Donegani, M. Eshraqi, B. Gålander, H. Hassanzadegan, E. Laface, Y. Levinsen, R. Miyamoto, M. Muñoz, E. Nilsson, D.C. Plostinar, A.G. Sosa, R. Tarkeshian, C.A. Thomas
    ESS, Lund, Sweden
 
  The European Spallation Source, currently under construction in Lund, Sweden, will be the brightest spallation neutron source in the world, when the proton linac driver achieves the design power of 5 MW at 2 GeV beam energy. Such a high power requires production, efficient acceleration, and transport of a high current proton beam with minimal loss. This implies in a challenging design and beam commissioning of this machine. The linac features a long pulse length of 2.86 ms at a relatively low repetition late of 14 Hz. The ESS ion source and low energy beam transport are in-kind contributions from INFN-LNS. Beam commissioning of this section started in September 2018 and continued until early July in 2019. This article presents highlights from a campaign of beam characterizations and optimizations during this beam commissioning stage.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HB2021-THDC2  
About • Received ※ 17 October 2021 — Revised ※ 20 October 2021 — Accepted ※ 22 November 2021 — Issue date ※ 01 December 2021
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