TY  - CONF
AU  - Hetzel, Jan
AU  - Lehrach, Andreas
AU  - Breitkreutz, Bernd
AU  - Grigoryev, Kirill
AU  - Thelen, Michael
AU  - Niedermayer, Philipp
AU  - Gebel, Ralf
AU  - Kamerdzhiev, Vsevolod
AU  - Valdau, Yury
TI  - Final preparation of accelerated and polarised protons at COSY Jülich
VL  - IPAC 2024
PB  - JACoW Publishing
M1  - FZJ-2025-00068
T2  - Journals of Accelerator Conferences Website (JACoW)
SP  - 1657-1660 pages0.62 MB
PY  - 2024
N1  - Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.
AB  - 2023 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.
T2  - 15th International Particle Accelerator Conference
CY  - 19 May 2024 - 24 May 2024, Nashville, TN (USA)
Y2  - 19 May 2024 - 24 May 2024
M2  - Nashville, TN, USA
KW  - Accelerator Physics (Other)
KW  - mc4-hadron-accelerators - MC4: Hadron Accelerators (Other)
KW  - MC4.A24 - MC4.A24 Accelerators and Storage Rings, Other (Other)
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.18429/JACOW-IPAC2024-TUPS12
UR  - https://juser.fz-juelich.de/record/1034956
ER  -