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URLhttps://doi.org/10.18429/JACoW-IPAC2024-TUPS12
TitleFinal preparation of accelerated and polarised protons at COSY Jülich
Authors
  • J. Hetzel, B. Breitkreutz, K. Grigoryev, P. Niedermayer, R. Gebel, V. Kamerdzhiev, Y. Valdau
    GSI Helmholtzzentrum für Schwerionenforschung GmbH
  • A. Lehrach, M. Thelen
    Forschungszentrum Jülich GmbH
Abstract2023 was the last year of operation for the Cooler Synchrotron (COSY) in Jülich, Germany. To prepare for the extraction of polarized protons at a momentum of 1950 MeV/c to an external target, full advantage of the most recent developments of the COSY control system was taken along with the established hardware of COSY. Challenges in beam development included the operation close to transition energy as well as seven depolarizing resonances (4 intrinsic and 3 imperfection resonances) which have to be crossed during the acceleration. To overcome the intrinsic resonances tune jumps were carried out with the Q-jump quadrupole system of COSY*. To identify the correct time window for the jump, the precise measurement of the tune** during the acceleration ramp was used. We present how the recent developments in the control system, along with the established techniques, enabled us to successfully accelerate and extract the polarized beam.
Paperdownload: TUPS12.pdf
CiteBibTeX, LaTeX, Text/Word, RIS, EndNote
Conference15th International Particle Accelerator Conference
Series
LocationNashville, TN
Date19-24 May 2024
PublisherJACoW Publishing, Geneva, Switzerland
Editorial BoardFulvia Pilat - Oak Ridge National Laboratory Wolfram Fischer - Brookhaven National Laboratory Robert Saethre - Oak Ridge National Laboratory Petr Anisimov - Los Alamos National Laboratory Ivan Andrian - Elettra-Sincrotrone Trieste S.C.p.A.
Online ISBN978-3-95450-247-9
Online ISSN2673-5490
Received15 May 2024
Revised19 May 2024
Accepted19 May 2024
Issued01 July 2024
DOI10.18429/JACoW-IPAC2024-TUPS12
Pages1657-1660