Search Results - "R. B. Appleby"
-
1
Focus point on high-energy accelerators: advances, challenges, and applications
Published in European physical journal plus (09-01-2023)Get full text
Journal Article -
2
The practical Pomeron for high energy proton collimation
Published in The European physical journal. C, Particles and fields (26-09-2016)“…We present a model which describes proton scattering data from ISR to Tevatron energies, and which can be applied to collimation in high energy accelerators,…”
Get full text
Journal Article -
3
Nonlinear dynamics of proton beams with hollow electron lens in the CERN high-luminosity LHC
Published in European physical journal plus (01-01-2022)“…The design stored beam energy in the CERN high-luminosity large hadron collider (HL-LHC) upgrade is about 700 MJ, with about 36 MJ in the beam tails, according…”
Get full text
Journal Article -
4
Innovative method to measure the extent of the stable phase-space region of proton synchrotrons
Published in Physical review. Accelerators and beams (01-03-2019)“…The advent of circular accelerators based on superconducting magnets has revolutionized the field of beam dynamics, with particle motion turning from linear to…”
Get full text
Journal Article -
5
Normal-conducting scaling fixed field alternating gradient accelerator for proton therapy
Published in Physical review special topics. PRST-AB. Accelerators and beams (29-09-2015)“…In this paper we present a new lattice design for a 30–350 MeV scaling fixed-field alternating gradient accelerator for proton therapy and tomography—NORMA…”
Get full text
Journal Article -
6
Probing LHC halo dynamics using collimator loss rates at 6.5 TeV
Published in Physical review. Accelerators and beams (01-04-2020)“…Halo diffusion measurements at the CERN Large Hadron Collider (LHC) were conducted with beams for physics at 6.5 TeV by means of collimator scans, carried out…”
Get full text
Journal Article -
7
Accurate crab cavity modeling for the high luminosity Large Hadron Collider
Published in Physical review special topics. PRST-AB. Accelerators and beams (01-10-2014)“…As part of the Large Hadron Collider high luminosity upgrade it is proposed to include crab cavities in the lattice in order to enhance the luminosity. For one…”
Get full text
Journal Article -
8
Performance of the Large Hadron Collider cleaning system during the squeeze: Simulations and measurements
Published in Physical review. Accelerators and beams (01-02-2019)“…The Large Hadron Collider (LHC) at CERN is a 7 TeV proton synchrotron, with a design stored energy of 362 MJ per beam. The high-luminosity (HL-LHC) upgrade…”
Get full text
Journal Article -
9
Long term dynamics of the high luminosity Large Hadron Collider with crab cavities
Published in Physical review. Accelerators and beams (01-10-2016)“…The High Luminosity upgrade of the Large Hadron Collider (HL-LHC) aims to achieve an integrated luminosity of 200–300fb−1 per year, including the contribution…”
Get full text
Journal Article -
10
Prediction of beam losses during crab cavity quenches at the high luminosity LHC
Published in Physical review. Accelerators and beams (01-06-2019)“…Studies of the crab cavities at KEKB revealed that the rf phase could shift by up to 50° within∼50μs during a quench; while the cavity voltage is still at…”
Get full text
Journal Article -
11
Design and testing of a four rod crab cavity for High Luminosity LHC
Published in Physical review. Accelerators and beams (2017)“…A 4-rod deflecting structure is proposed as a possible crab cavity design for the LHC high luminosity upgrade. Crab cavities are required for the LHC…”
Get full text
Journal Article -
12
Medical therapy and imaging fixed-field alternating-gradient accelerator with realistic magnets
Published in Physical review. Accelerators and beams (01-10-2017)“…NORMA is a design for a normal-conducting racetrack fixed-field alternating-gradient accelerator for protons from 50 to 350 MeV. In this article we show the…”
Get full text
Journal Article -
13
Long term stability studies in the presence of crab cavities and high order multipoles in the CERN super proton synchrotron and high luminosity large hadron collider
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-05-2023)“…In 2018 the world’s first Crab Cavity (CC) experiments with protons were successfully performed, aiming to study the CC effect on a proton beam and evaluate…”
Get full text
Journal Article -
14
Beam-related machine protection for the CERN Large Hadron Collider experiments
Published in Physical review special topics. PRST-AB. Accelerators and beams (01-06-2010)“…The Large Hadron Collider at CERN, Geneva stores 360 MJ per beam of protons at the top machine energy. This amount of energy storage presents a considerable…”
Get full text
Journal Article -
15
Design of a large energy acceptance beamline using fixed field accelerator optics
Published in Physical review. Accelerators and beams (01-07-2024)“…Large energy acceptance arcs have been proposed for applications such as cancer therapy, muon accelerators, and recirculating linacs. The efficacy of hadron…”
Get full text
Journal Article -
16
Observation of the Annihilation Decay Mode B 0 → K + K
Published in Physical review letters (21-02-2017)Get full text
Journal Article -
17
Particle trajectories in a four rod crab cavity
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-01-2014)“…As part of the HL-LHC upgrade it is planned that crab cavities will be installed into the machine to control and increase the luminosity. Of crucial importance…”
Get full text
Journal Article -
18
The PyZgoubi framework and the simulation of dynamic aperture in fixed-field alternating-gradient accelerators
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-03-2015)“…We present PyZgoubi, a framework that has been developed based on the tracking engine Zgoubi to model, optimise and visualise the dynamics in particle…”
Get full text
Journal Article -
19
Evidence for Exotic Hadron Contributions to Λ b 0 → J / ψ p π − Decays
Published in Physical review letters (01-08-2016)“…A full amplitude analysis of $\Lambda_b^0 \to J/\psi p \pi^-$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$…”
Get full text
Journal Article -
20
Diffractive dijet production
Published in Physics letters. B (08-08-2002)“…We explore the diffractive interaction of a proton with an antiproton which results in centrally produced dijets. This process has been recently studied at the…”
Get full text
Journal Article