J. M. Jowett
A5021291946- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Distributed and Parallel Computing Systems
- Dark Matter and Cosmic Phenomena
- Gyrotron and Vacuum Electronics Research
- Radiation Therapy and Dosimetry
- Nuclear reactor physics and engineering
- Atomic and Molecular Physics
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Electron and X-Ray Spectroscopy Techniques
- Magnetic confinement fusion research
- Semiconductor Lasers and Optical Devices
- Shakespeare, Adaptation, and Literary Criticism
- Semiconductor Quantum Structures and Devices
- Quantum and electron transport phenomena
- Plasma Diagnostics and Applications
- Statistical Methods and Bayesian Inference
European Organization for Nuclear Research
2015-2025
GSI Helmholtz Centre for Heavy Ion Research
2021-2025
A. Alikhanyan National Laboratory
2021-2024
Technical University of Munich
2021
Council of Science Editors
2016
Fermi National Accelerator Laboratory
2014
Medical Prescription Services
2003
Harlow College
2002
University of Oxford
1992
University of Glasgow
1990
The physics programme and the design are described of a new collider for particle nuclear physics, Large Hadron Electron Collider (LHeC), in which newly built electron beam 60 GeV, up to possibly 140 energy collides with intense hadron beams LHC. Compared HERA, kinematic range covered is extended by factor twenty negative four-momentum squared, $Q^2$, inverse Bjorken $x$, while luminosity $10^{33}$ cm$^{-2}$s$^{-1}$ LHeC projected exceed integrated HERA two orders magnitude. devoted an...
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV measured properties compatible those Standard-Model Higgs boson, coupled absence discoveries phenomena beyond Standard Model at TeV scale, has triggered interest in ideas for future factories. A circular e+e- collider hosted 80 to 100 km tunnel, TLEP, is among most attractive solutions proposed so far. It clean experimental environment, produces high luminosity top-quark, W Z studies, accommodates multiple...
A possible design of a multi-TeV e+e- linear collider is presented. The based on the CLIC (Compact Linear Collider) two-beam technology proposed and developed at CERN. Though study has shown that this applicable to with centre-of-mass energies from 500 GeV or less up 5 TeV, present report focuses nominal energy 3 Te V. First, short overview given physics could possibly be done such collider. Then, description main-beam complex covers injection system, 30 GHz main linac, beam delivery system....
Proton–nucleus (p+A) collisions have long been recognized as a crucial component of the physics program with nuclear beams at high energies, in particular for their reference role to interpret and understand nucleus–nucleus data well potential elucidate partonic structure matter low parton fractional momenta (small-x). Here, we summarize main motivations that make proton–nucleus run decisive ingredient successful heavy-ion Large Hadron Collider (LHC) present unique scientific opportunities...
The future opportunities for high-density QCD studies with ion and proton beams at the LHC are presented. Four major scientific goals identified: characterisation of macroscopic long wavelength Quark-Gluon Plasma (QGP) properties unprecedented precision, investigation microscopic parton dynamics underlying QGP properties, development a unified picture particle production from small (pp) to large (nucleus--nucleus) systems, exploration densities in nuclei broad ($x$, $Q^2$) kinematic range...
This report comprises the outcome of five working groups that have studied physics potential high-luminosity phase LHC (HL-LHC) and perspectives for a possible future high-energy (HE-LHC).The covered broad range topics: Standard Model measurements, studies properties ofthe Higgs boson, searches phenomena beyond Model, flavor heavy quarks leptonsand QCD matter at high density temperature.The work is prepared as an input to ongoing process updating European Strategy Particle Physics,a will be...
Opportunities for searches phenomena beyond the Standard Model (BSM) using heavy-ions beams at high energies are outlined. Different BSM proposed in last years collisions of heavy ions, mostly Large Hadron Collider, summarized. A few concrete selected cases reviewed including axion-like particles, anomalous $\tau$ electromagnetic moments, magnetic monopoles, and dark photons. Expectations achievable sensitivities these coming given. Studies CP violation hot dense QCD matter connections to...
The Future Circular Collider (FCC) Study is aimed at assessing the physics potential and technical feasibility of a new collider with centre-of-mass energies, in hadron-hadron collision mode, seven times larger than nominal LHC energies. Operating such machine heavy ions an option that being considered accelerator design studies. It would provide, for example, Pb-Pb p-Pb collisions sqrt{s_NN} = 39 63 TeV, respectively, per nucleon-nucleon collision, integrated luminosities above 30 nb^-1...
Electromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly luminosity decay. To quantify their impact on operation of collider, we have used a three-step simulation approach, which consists optical tracking, Monte Carlo shower simulation, and thermal network model heat flow inside magnet. We present results for case...
A beam optics scheme has been designed for the future circular collider-${e}^{+}{e}^{\ensuremath{-}}$ (FCC-ee). The main characteristics of design are: energy 45 to 175 GeV, 100 km circumference with two interaction points (IPs) per ring, horizontal crossing angle 30 mrad at IP and crab-waist [P. Raimondi, D. Shatilov, M. Zobov, arXiv:physics/0702033; P. in Proceedings 22nd Particle Accelerator Conference, PAC-2007, Albuquerque, NM (IEEE, New York, 2007), p. TUPAN037.] local chromaticity...
A good understanding of the luminosity performance in a collider, as well reliable tools to analyse, predict, and optimise performance, are great importance for successful planning execution future runs. In this article, we present two different models evolution beam parameters heavy-ion colliders. The first, Collider Time Evolution (CTE) is particle tracking code, while second, Multi-Bunch Simulation (MBS), based on numerical solution ordinary differential equations parameters. As...
In response to a request from the CERN Scientific Policy Committee (SPC), machine parameters and expected luminosity performance for several proposed post-LHC collider projects at are compiled: three types of hadron colliders (HL-LHC upgrade, FCC-hh HE-LHC), circular lepton (FCC-ee), linear (CLIC), options lepton-hadron (LHeC, HE-LHeC, FCC-eh). Particular emphasis is put on availability, physics run time, efficiency. The information contained in this document was presented SPC Meeting...
Monte Carlo shower simulations are essential for understanding and predicting the consequences of beam losses in high-energy proton ion colliders. Shower routinely used at CERN estimating beam-induced energy deposition, radiation damage, radioactivity Large Hadron Collider (LHC). Comparing these against loss measurements is an important prerequisite assessing predictive ability model calculations. This paper validates fluka simulation predictions monitor (BLM) signals BLM from fills 3.5 4...
We report the first observations of beam losses due to bound-free pair production at interaction point a heavy-ion collider. This process is expected be major luminosity limit for CERN Large Hadron Collider when it operates with (208)Pb(82+) ions because localized energy deposition by lost may quench superconducting magnet coils. Measurements were performed BNL Relativistic Heavy Ion (RHIC) during operation 100 GeV/nucleon (63)Cu(29+) ions. At RHIC, rate, and magnetic field are low enough so...
Abstract This document summarises proposed searches for new physics accessible in the heavy-ion mode at CERN Large Hadron Collider (LHC), both through hadronic and ultraperipheral γγ interactions, that have a competitive or, even, unique discovery potential compared to standard proton–proton collision studies. Illustrative examples include particles—such as axion-like pseudoscalars, radions, magnetic monopoles, long-lived particles, dark photons, sexaquarks matter candidates—as well such...
Reliable predictions of yields nuclear fragments produced in electromagnetic dissociation and hadronic fragmentation ion beams are great practical importance analyzing beam losses interactions with the environment at Large Hadron Collider (LHC) CERN as well for estimating radiation effects galactic cosmic rays on spacecraft crew electronic equipment. The model predicting relativistic heavy ions is briefly described, then applied to problems relevance LHC. results based fluka code, which...
The Large Hadron Collider (LHC) at CERN pushes forward to new regimes in terms of beam energy and intensity. In view the combination very energetic intense beams together with sensitive machine components, particular superconducting magnets, LHC is equipped a collimation system provide protection intercept uncontrolled losses. Beam losses could cause magnet quench, or worst case, damage hardware. system, which optimized good proton beams, has shown cleaning efficiency heavy-ion worse by up...
These lectures concentrate on statistical phenomena in electron storage rings. A stored beam is a dissipative, fluctuating system far from equilibrium whose mathematical description can be based upon non−equilibrium mechanics. Stochastic differential equations are used to describe the quantum fluctuations of synchrotron radiation which main cause randomness dynamics. Fluctuating reaction forces described via stochastic terms Hamilton's motion. Normal modes particle motion, damping effects,...