D. M. Newbold
A5107959742- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Radiation Detection and Scintillator Technologies
- Black Holes and Theoretical Physics
- Distributed and Parallel Computing Systems
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Parallel Computing and Optimization Techniques
- Gamma-ray bursts and supernovae
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Planetary Science and Exploration
- International Science and Diplomacy
- Radiation Therapy and Dosimetry
- Advancements in Semiconductor Devices and Circuit Design
- Superconducting Materials and Applications
Saint Thomas - Rutherford Hospital
2020-2025
Rutherford Appleton Laboratory
2014-2025
University of Antwerp
2023-2024
A. Alikhanyan National Laboratory
2022-2024
Institute of High Energy Physics
2022-2024
Vrije Universiteit Brussel
2023-2024
European Organization for Nuclear Research
2000-2024
Fermi National Accelerator Laboratory
2020-2023
Imperial College London
2012-2023
University of Bristol
2013-2022
We present the report of hadronic working group BOOST2010 workshop held at University Oxford in June 2010. The first part contains a review potential decays highly boosted particles as an aid for discovery LHC and discussion status tools developed to meet challenge reconstructing isolating these topologies. In second part, we new results comparing performance jet grooming techniques top tagging algorithms on common set benchmark channels. also study sensitivity substructure observables...
We outline the experimental concept and key scientific capabilities of AION (Atom Interferometer Observatory Network), a proposed programme using cold strontium atoms to search for ultra-light dark matter, explore gravitational waves in mid-frequency range between peak sensitivities LISA LIGO/Virgo/ KAGRA/INDIGO/Einstein Telescope/Cosmic Explorer experiments, probe other frontiers fundamental physics. would complement planned searches as well mergers involving intermediate-mass black holes...
This document a outlines set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these have when applied searches at LHC, provide number useful expressions reference. The list includes both s-channel t-channel scenarios. For s-channel, spin-0 spin-1 mediations are discussed, also realizations where Higgs particle provides portal between visible sectors. guiding principles underpinning proposed...
The GridPP Collaboration is building a UK computing Grid for particle physics, as part of the international effort towards Large Hadron Collider. project, funded by Particle Physics and Astronomy Research Council (PPARC), began in September 2001 completed its first phase 3 years later. collaboration approximately 100 researchers 19 university physics groups, Central Laboratory Councils CERN, reflecting strategic importance project. In with other European US efforts, project demonstrated...
In this White Paper we present and discuss a concrete proposal for the consistent interpretation of Dark Matter searches at colliders in direct detection experiments. Based on specific implementation simplified models vector axial-vector mediator exchanges, demonstrates how two search strategies can be compared an equal footing.
The next generation of very-short-baseline reactor experiments will require compact detectors operating at surface level and close to a nuclear reactor. This paper presents new detector concept based on composite solid scintillator technology. target uses cubes polyvinyltoluene interleaved with 6LiF:ZnS(Ag) phosphor screens detect the products inverse beta decay reaction. A multi-tonne system built from these individual cells can provide precise localisation scintillation signals, making...
This paper outlines the centralized design and production of ultra-high-vacuum sidearm laser-stabilization systems for AION Ultra-Cold Strontium Laboratories. Commissioning data on residual gas steady-state pressures in chambers, magnetic field quality, laser stabilization, loading rate 3D magneto-optical trap are presented. Streamlining stabilization enabled Collaboration to build equip parallel five state-of-the-art Laboratories within 24 months by leveraging key expertise collaboration....
Forthcoming hardware upgrades to the CMS experiment trigger and readout system are based upon ATCA or μTCA bus standards, giving them opportunity be controlled via commodity gigabit Ethernet. These supersede existing systems largely VME-bus standard, thus a requirement has arisen provide new low-level control infrastructure for use by subsystem developers. This paper details recent research development into tightly-integrated suite of software firmware IPbus protocol that allows such...
We report on a high statistics search for the ${\ensuremath{\Xi}}^{\ensuremath{-}\ensuremath{-}}(1860)$ resonance in ${\ensuremath{\Sigma}}^{\ensuremath{-}}$-nucleus collisions at $340\phantom{\rule{0.3em}{0ex}}\mathrm{GeV}∕c$. No evidence this is found our data sample which contains 676000 ${\ensuremath{\Xi}}^{\ensuremath{-}}$ candidates above background. For decay channel...
The Compact Muon Solenoid (CMS) experiment has implemented a sophisticated two-level online selection system that achieves rejection factor of nearly 105. During Run II, the LHC will increase its centre-of-mass energy up to 13 TeV and progressively reach an instantaneous luminosity 2 × 1034 cm−2 s−1. In order guarantee successful ambitious physics programme under this intense environment, CMS Trigger Data acquisition (DAQ) been upgraded. A novel concept for L1 calorimeter trigger is...
When the LHC resumes operation in 2015, higher centre-of-mass energy and high-luminosity conditions will require significantly more sophisticated algorithms to select interesting physics events within readout bandwidth limitations. The planned upgrade CMS calorimeter trigger achieve this goal by implementing a flexible system based on μTCA standard, with modules Xilinx Virtex-7 FPGAs up 144 optical links running at speeds of 10 Gbps. improve position resolution objects, enable much improved...
A novel approach to first-level hardware triggering in the LHC experiments has been studied and a prototype system built. Calorimeter trigger primitive data ( ∼ 5 Tb/s) are re-organised time-multiplexed so that single processing node (FPGA) may access corresponding entire detector for given bunch crossing. This provides maximal flexibility construction of new algorithms, which will be an important factor ensuring adequate performance at very high levels background expected upgraded LHC.
We report on a high-statistics search for the Θ(1540)+ resonance in Σ−-nucleus collisions at 340 GeV/c. No evidence this was found our data sample which contains 13 million Ks0→π+π− decays above background. For decay channel Θ+→Ks0p and kinematic range xF> 0.05, we find production cross section to be BR(Θ+→Ks0p)σ0<1.8 μb per nucleon 99% C.L.Received 26 July 2005DOI:https://doi.org/10.1103/PhysRevC.72.055201©2005 American Physical Society
The CMS Level-1 calorimeter trigger is being upgraded in two stages to maintain performance as the LHC increases pile-up and instantaneous luminosity its second run. In first stage, improved algorithms including event-by-event corrections are used. New for heavy ion running have also been developed. higher granularity inputs a time-multiplexed approach allow position energy resolution. Data processing both of upgrade performed with new, Xilinx Virtex-7 based AMC cards.
The CMS experiment is currently developing a computing system capable of serving, processing and archiving the large number events that will be generated when detector starts taking data. During 2004 undertook scale data challenge to demonstrate ability cope with sustained data-taking rate equivalent 25% startup rate. Its goals were: run event reconstruction at CERN for period 25 Hz input rate; distribute several regional centers; enable access those centers analysis. Grid middleware was...