| Paper | Title | Page |
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| MOPAB007 | Prospect for Interaction Region Local Coupling Correction in the LHC Run 3 | 61 |
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Funding: This work was supported by STFC Liverpool Centre for Doctoral Training on Data Intensive Science (LIV. DAT) and CERN. Successful operation of large scale particle accelerators depends on the precise correction of unavoidable magnet field or alignment errors present in the machine. In the LHC Run 2, local linear coupling in the Interaction Regions (IR) has been proven to have a severe impact on beam size and hence the luminosity - up to a 50% decrease -, making its handling a target for Run 3 and High Luminosity LHC (HL-LHC). However, current measurement methods are not optimised for local IR coupling. In this contribution, an approach to accurately minimise IR local coupling based on correlated external variables such as the |C-| is proposed. The validity of the method is demonstrated through simulations and benchmarked against theoretical values, such as Resonance Driving Terms (RDTs) and Ripken parameters. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB007 | |
| About • | paper received ※ 17 May 2021 paper accepted ※ 23 July 2021 issue date ※ 19 August 2021 | |
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| WEPAB026 | Optics Measurements and Correction Plans for the HL-LHC | 2656 |
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| The High Luminosity LHC (HL-LHC) will require stringent optics correction to operate safely and deliver the design luminosity to the experiments. In order to achieve this, several new methods for optics correction have been developed. In this article, we outline some of these methods and we describe the envisioned strategy of how to use them in order to reach the challenging requirements of the HL-LHC physics program. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB026 | |
| About • | paper received ※ 17 May 2021 paper accepted ※ 27 July 2021 issue date ※ 30 August 2021 | |
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| WEPAB027 | Optics Correction Strategy for Run 3 of the LHC | 2660 |
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| The Run 3 of the LHC will continue to provide new challenges for optics corrections. In order to succeed and go beyond what was achieved previously, several new methods to measure and correct the optics have been developed. In this article we describe these methods and outline the plans for the optics commissioning in 2022. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB027 | |
| About • | paper received ※ 17 May 2021 paper accepted ※ 12 July 2021 issue date ※ 11 August 2021 | |
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| THPAB168 | Optics Measurement by Excitation of Betatron Oscillations in the CERN PSB | 4078 |
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| Optics measurement from analysis of turn-by-turn BPM data of betatron oscillations excited with a kicker magnet has been employed very successfully in many machines but faces particular challenges in the CERN PSB where BPM to BPM phase advances are sub-optimal for optics reconstruction. Experience using turn-by-turn oscillation data for linear optics measurements during PSB commissioning in2021 is presented, with implications for the prospect of such techniques in the PSB more generally. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB168 | |
| About • | paper received ※ 19 May 2021 paper accepted ※ 14 July 2021 issue date ※ 27 August 2021 | |
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