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Sextupole RDTs in the LHC at injection and in the ramp

Abstract:
During 2023, examination of the action dependence of sextupolar resonance driving terms (RDT) in the LHC at injection, as measured with an AC-dipole, demonstrated that a robust measurement of the RDTs could still be achieved even with very small amplitude kicks, typically used for linear optics studies. Consequently, analysis of optics measurements from 2022 to 2024 during the LHC energy ramp allowed a first measurement of the sextupole resonance evolution. A large asymmetry was observed between the two LHC beams, with the clockwise circulating beam (LHCB1) being significantly worse than the counter-clockwise circulating beam (LHCB2), and a clear increase in the RDT strength during the ramp was observed. During 2024 commissioning, a first attempt was made to correct the đť‘“1020 RDT of LHCB1 at injection. Results are presented in this report.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.18429/JACoW-IPAC2024-MOPC13

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Particle Physics
Role:
Author
ORCID:
0000-0002-8150-8919
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Particle Physics
Oxford college:
Jesus; Jesus College;Jesus College
Role:
Author
ORCID:
0000-0002-4518-526X


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Funder identifier:
https://ror.org/00k4n6c32
Grant:
101004730
654305
227579
645479
730871
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Funder identifier:
https://ror.org/001aqnf71
Grant:
EP/Y000617/1
More from this funder
Funder identifier:
https://ror.org/057g20z61
Grant:
ST/V001655/1
ST/W005123/1
ST/X005518/1
ST/T001860/1
ST/T001933/1
ST/J000744/1
PP/E002862/1
ST/N000447/1
ST/P005896/1
ST/P003699/1
ST/S000933/1
ST/P002048/1
ST/J002011/1
ST/G008531/1
ST/P000967/1
ST/G502512/1


Publisher:
JACoW Publishing
Host title:
Proceedings of the 15th International Particle Accelerator Conference (IPAC 2024)
Pages:
71-74
Publication date:
2024-07-01
Acceptance date:
2024-05-23
Event title:
15th International Particle Accelerator Conference (IPAC 2024)
Event location:
Nashville, TN, USA
Event website:
https://ipac24.org/
Event start date:
2024-05-19
Event end date:
2024-05-24
DOI:
ISSN:
2673-5490
ISBN:
978-3-95450-247-9


Language:
English
Pubs id:
2033549
Local pid:
pubs:2033549
Deposit date:
2024-09-30

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