LHC beam instrumentation

Jones, O R

doi:10.1109/pac.2007.4440723

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…in-situ treatment was also applied to the beam-screens of a LHC standalone magnet during LS2. However, this treatment is not compatible with the aperture verifications performed after each sector warm-up to detect PIM RF-finger buckling [162]. Candidate molecules for such a CH 𝑥 coverage have not been explored yet.…”

Section: Jinst 19 P05061mentioning

confidence: 99%

LHC Upgrades in preparation of Run 3

Arduini,

Baglin,

Bartosik

et al. 2024

J. Inst.

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The Large Hadron Collider (LHC) Long Shutdown 2 (2019–2021), following LHC Run 2, was primarily dedicated to the upgrade of the LHC Injectors but it included also a signiﬁcant amount of activities aimed at consolidation of the LHC machine components, removal of known limitations and initial upgrades in view of the High-Luminosity LHC (HL-LHC) to favour the intensity ramp-up during Run 3 (2022–2025). An overview of the major modifications to the accelerator and its systems is followed by a summary of the results of the superconducting magnet training campaign to increase the LHC operation energy beyond the maximum value of 6.5 TeV reached during Run 2. The LHC configuration and the scenarios for proton and ion operation for Run 3 are presented considering the expected performance of the upgraded LHC Injectors and the proton beam intensity limitations resulting from the heat load on the cryogenic system due to beam-induced electron cloud and impedance.

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Section: Jinst 19 P05061mentioning

confidence: 99%

LHC Upgrades in preparation of Run 3

Arduini,

Baglin,

Bartosik

et al. 2024

J. Inst.

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“…The first step is to illustrate the concept of the 50 Hz lines on the beam spectrum. To this end, the turn-byturn data from the High Sensitivity Base-Band measurement system (HS BBQ) [26,27] are extracted. For instance, Fig.…”

Section: B Measurements In Normal Operationmentioning

confidence: 99%

Origin of the 50 Hz harmonics in the transverse beam spectrum of the Large Hadron Collider

Kostoglou,

Arduini,

Intelisano

et al. 2020

Preprint

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Since the beginning of the Large Hadron Collider (LHC) commissioning, spectral components at harmonics of the mains frequency (50 Hz) have been observed in the transverse beam spectrum. This paper presents an overview of the most important observations, collected during the latest physics operation of the LHC in 2018, which clearly indicates that the harmonics are the result of a real beam excitation rather than an instrumental feature. Based on these findings, potential sources of the perturbation are discussed and a correlation with noise originating from the magnets' power converters is presented. As many of these tones reside in the vicinity of the betatron tune, they can increase the diffusion of the particles in the distribution in the presence of non-linear effects, leading to proton losses and eventually to a lifetime reduction. A quantitative characterization of the machine noise spectrum, together with an understanding of the noise source is an essential ingredient to evaluate the impact of the 50 Hz harmonics on the future upgrade of the LHC, the High Luminosity LHC (HL-LHC). To this end, simulations with the single-particle tracking code, SixTrack, are employed, including a realistic noise spectrum as extracted from experimental observations. The methods and results of the tracking studies are reported and discussed in this paper.

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“…Phenomena of electricity, such as electro magnetic induction, are used in the LHC in several instances, e.g. determination of the LHC beams' positions and intensities by beam position monitors [10]. Particle beams represent a source of ionising radiation and therefore possible hazard to humans.…”

Section: Particle Beamsmentioning

confidence: 99%

Introducing the LHC in the classroom: an overview of education resources available

et al. 2016

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In the context of the recent re-start of CERN’s Large Hadron Collider (LHC) and the challenge presented by unidentified falling objects (UFOs), we seek to facilitate the introduction of high energy physics in the classroom. Therefore, this paper provides an overview of the LHC and its operation, highlighting existing education resources, and linking principal components of the LHC to topics in physics curricula.

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LHC beam instrumentation

Cited by 8 publications

References 7 publications

LHC Upgrades in preparation of Run 3

LHC Upgrades in preparation of Run 3

Origin of the 50 Hz harmonics in the transverse beam spectrum of the Large Hadron Collider

Introducing the LHC in the classroom: an overview of education resources available

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