David Stickland
A5024105331- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Radiation Therapy and Dosimetry
- Black Holes and Theoretical Physics
- Big Data Technologies and Applications
- Gamma-ray bursts and supernovae
- Diamond and Carbon-based Materials Research
- International Science and Diplomacy
- Nuclear Physics and Applications
- Superconducting Materials and Applications
- Superconducting and THz Device Technology
- CCD and CMOS Imaging Sensors
- Cold Atom Physics and Bose-Einstein Condensates
Princeton University
2016-2025
A. Alikhanyan National Laboratory
2022-2024
Institute of High Energy Physics
2021-2024
University of Antwerp
2024
Institut de Recherche sur les Lois Fondamentales de l'Univers
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2024
École Polytechnique Fédérale de Lausanne
2024
European Organization for Nuclear Research
2011-2024
University of Puerto Rico-Mayaguez
2023
Université Libre de Bruxelles
2017
At the Large Hadron Collider (LHC), absolute luminosity calibrations obtained by van der Meer (vdM) method are affected mutual electromagnetic interaction of two beams. The colliding bunches experience relative orbit shifts, as well optical distortions akin to dynamic-$\beta$ effect, that both depend on transverse beam separation and must therefore be corrected for when deriving scale. In vdM regime, beam-beam parameter is small enough shift can calculated analytically. corrections...
Abstract The high-luminosity upgrade of the LHC brings unprecedented requirements for real-time and precision bunch-by-bunch online luminosity measurement beam-induced background monitoring. A key component CMS Beam Radiation, Instrumentation Luminosity system is a stand-alone luminometer, Fast Condition Monitor (FBCM), which fully independent from central trigger data acquisition services able to operate at all times with triggerless readout. FBCM utilizes dedicated front-end...
The measurement of the magnetic field in tracking volume inside superconducting coil Compact Muon Solenoid (CMS) detector under construction at CERN is done with a fieldmapper designed and produced Fermilab. uses 10 3-D B-sensors (Hall probes) developed NIKHEF calibrated to precision 0.05% for nominal 4 T field. precise measurements are 33840 points cylinder 1.724 m radius 7 long central fields 2, 3, 3.5, 3.8, T. Three components flux density CMS maximum excitation remanent on steel-air...
The CMS beam and radiation monitoring subsystem BCM1F during LHC Run I consisted of 8 individual diamond sensors situated around the pipe within tracker detector volume, for purpose fast background collision products. Effort is ongoing to develop use as an online bunch-by-bunch luminosity monitor. will be running whenever there in LHC, its data acquisition independent from detector, hence it delivers even when not taking data. To prepare expected increase change 50 ns 25 bunch separation,...
The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring online luminosity background. Although readout bandwidth Fast Conditions Monitoring system (BCM1F—one faster monitoring BRIL), was sufficient for initial LHC conditions, foreseen enhancement beams parameters after Long Shutdown-1 (LS1) imposed upgrade system. This paper presents new BCM1F, which designed to...
A novel Beam Halo Monitor (BHM) has been designed and built for the CMS experiment at LHC. It will provide an online, bunch-by-bunch measurement of background particles created by interactions proton beam with residual gas molecules in vacuum chamber or collimator material upstream CMS. The BHM consists two arrays twenty detectors that are mounted around outer forward shielding experiment. Each detector is comprised a cylindrical quartz radiator, optically coupled to fast...
The Beam Conditions and Radiation Monitoring System (BRM), is installed in CMS to protect the detector from high beam losses provide feedback LHC on conditions. primary subsystems are based either single crystal diamond sensors (BCM1F) for particle counting with nanosecond resolution or polycrystalline diamonds (BCM2; BCM1L) integrated signal current measurements. scintillation counters (BSC) also used during low luminosity running. detectors have radiation hard front-end electronics read...
We present measurements of the differential cross section for production massive muon pairs in 225-GeV/c ${\ensuremath{\pi}}^{\ensuremath{-}}$-nucleus collisions. have used data between $\ensuremath{\psi}$ and $\ensuremath{\Upsilon}$ resonances framework Drell-Yan quark-antiquark annihilation model to predict behavior high-mass (${m}_{\ensuremath{\mu}\ensuremath{\mu}}>11$ GeV/${\mathit{c}}^{2}$) region. The are consistent with this extrapolation provided that a QCD leading-logarithmic...
The Compact Muon Solenoid (CMS) is one of the two large, general purpose experiments situated at LHC CERN. As with all high energy physics experiments, knowledge beam conditions and luminosity vital importance. Beam Conditions Radiation Monitoring System (BRM) installed in CMS to protect detector provide feedback on conditions. It composed several sub-systems that measure radiation level close or inside sub-detectors, monitor halo different time resolution, support tuning case adverse by...
In an experiment performed at Fermi National Accelerator Laboratory, the production of massive muon pairs in 225-GeV/c ${\ensuremath{\pi}}^{\ensuremath{-}}$-nucleus interactions has been studied for four nuclear targets. Comparison relative cross sections enables dependence on atomic weight $A$ to be determined. If this is parametrized such that dimuon section ${\ensuremath{\sigma}}_{\ensuremath{\mu}\ensuremath{\mu}}$ proportional ${A}^{\ensuremath{\alpha}}$ yields...
LEPC, the Large Electron Positron Collider being built at CERN, will be ready for experiments in 1988. A large array of bismuth germanate crystals part one first to installed. Particles (including photons) resulting from collisions identified and measured surrounding detector. At center this composite detector is a tracking device observe trajectories all particles. Beyond array; it measure energy electrons photons few MeV 100 GeV. This surrounded by hadron calorimeter. The calorimeter...