Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions
Successful operation of large-scale particle accelerators depends on the precise correction of magnet field or alignment errors present in the machine. In the Large Hadron Collider (LHC), transverse linear coupling has been shown to have a significant impact on the beam dynamics. However, current me...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-05-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.26.051001 |
| _version_ | 1797826102476931072 |
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| author | Felix Soubelet Tobias Persson Rogelio Tomás Oznur Apsimon Carsten P. Welsch |
| author_facet | Felix Soubelet Tobias Persson Rogelio Tomás Oznur Apsimon Carsten P. Welsch |
| author_sort | Felix Soubelet |
| collection | DOAJ |
| description | Successful operation of large-scale particle accelerators depends on the precise correction of magnet field or alignment errors present in the machine. In the Large Hadron Collider (LHC), transverse linear coupling has been shown to have a significant impact on the beam dynamics. However, current measurement methods are not sufficient for precise local coupling measurement at the interaction point. In this paper, an approach to determine interaction region local coupling corrections with a rigid waist shift based on correlated global variables such as the closest tune approach |C^{-}| is presented. The validity of the method is demonstrated through simulations and experimental measurements taken during the LHC Run 3 commissioning in 2022, where determined corrections were applied and led to a measured luminosity increase of 9.7% and 3.5% at the ATLAS and CMS detectors, respectively. |
| first_indexed | 2024-03-13T11:03:44Z |
| format | Article |
| id | doaj.art-be580cac3fd3432ba68b69e9013ecec2 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-03-13T11:03:44Z |
| publishDate | 2023-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-be580cac3fd3432ba68b69e9013ecec22023-05-16T14:15:33ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882023-05-0126505100110.1103/PhysRevAccelBeams.26.051001Rigid waist shift: A new method for local coupling corrections in the LHC interaction regionsFelix SoubeletTobias PerssonRogelio TomásOznur ApsimonCarsten P. WelschSuccessful operation of large-scale particle accelerators depends on the precise correction of magnet field or alignment errors present in the machine. In the Large Hadron Collider (LHC), transverse linear coupling has been shown to have a significant impact on the beam dynamics. However, current measurement methods are not sufficient for precise local coupling measurement at the interaction point. In this paper, an approach to determine interaction region local coupling corrections with a rigid waist shift based on correlated global variables such as the closest tune approach |C^{-}| is presented. The validity of the method is demonstrated through simulations and experimental measurements taken during the LHC Run 3 commissioning in 2022, where determined corrections were applied and led to a measured luminosity increase of 9.7% and 3.5% at the ATLAS and CMS detectors, respectively.http://doi.org/10.1103/PhysRevAccelBeams.26.051001 |
| spellingShingle | Felix Soubelet Tobias Persson Rogelio Tomás Oznur Apsimon Carsten P. Welsch Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions Physical Review Accelerators and Beams |
| title | Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions |
| title_full | Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions |
| title_fullStr | Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions |
| title_full_unstemmed | Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions |
| title_short | Rigid waist shift: A new method for local coupling corrections in the LHC interaction regions |
| title_sort | rigid waist shift a new method for local coupling corrections in the lhc interaction regions |
| url | http://doi.org/10.1103/PhysRevAccelBeams.26.051001 |
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