R. Walsh

ORCID: 0000-0002-3872-4114
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About
Contact & Profiles
Research Areas
  • 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
  • Black Holes and Theoretical Physics
  • Radiation Detection and Scintillator Technologies
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Medical Imaging Techniques and Applications
  • Particle Accelerators and Free-Electron Lasers
  • Distributed and Parallel Computing Systems
  • Atomic and Subatomic Physics Research
  • CCD and CMOS Imaging Sensors
  • Nuclear reactor physics and engineering
  • Gamma-ray bursts and supernovae
  • Radiation Therapy and Dosimetry
  • International Science and Diplomacy
  • Optical properties and cooling technologies in crystalline materials
  • Nuclear physics research studies
  • Noncommutative and Quantum Gravity Theories

Deutsches Elektronen-Synchrotron DESY
2016-2025

Institute of High Energy Physics
2015-2024

Canegrowers (Australia)
2024

University of Antwerp
2024

A. Alikhanyan National Laboratory
2014-2024

Universität Hamburg
2023

University of Illinois Chicago
2016

European Organization for Nuclear Research
2012-2015

Northwestern University
2015

Gdańsk University of Technology
2015

S. Chatrchyan Milan Nikolić R. Erbacher C. A. Carrillo Montoya M. Maggi and 95 more Wagner Carvalho M. Górski Danek Kotlinski Jacob Anderson B. Ujvári Sertac Ozturk A. Polatöz Shaaban Khalil Y. Choi Roumyana Hadjiiska D. G. Cassel Anil Singh Willard Johns Ludivine Ceard Pierre Van Hove Alberto Orso Maria Iorio Ulrich Heintz Alessandro Thea P. Killewald Teppo Mäenpää Muzaffer Ataç Jyothsna Rani Komaragiri József Molnár Frank Würthwein Marina Giunta Philippe Miné Sebastien Greder Dong Liang Pavel Petrov Alan Richards Mircho Rodozov M. Tytgat Robert Schöfbeck Luc Pape James Hirschauer Ivan Vankov B. Bilki Kwang Souk Sim Francisco Yumiceva Mustafa Numan Bakirci Evrim Ersin Kangal Clara Jorda Chiara Rovelli D. Fasanella Robert Hirosky Juan Carlos Sanabria A. Meyer Hans Reithler Lalit Mohan Pant M. Grothe T. Lindén Jozsef Palinkas Giovanna Selvaggi A. Santocchia Benedetta Caponeri Rumen Trayanov E. Gülmez Shruti Shrestha Christopher Justus Anastasios Papageorgiou W. D. Zeuner J. Suarez Gonzalez R. Granier de Cassagnac Georgios Daskalakis Rahmat Rahmat Kai-Yi Kao E. Migliore Moacyr Henrique Gomes E Souza T. Rohe M. Chamizo Llatas Bobby Scurlock N. Cavallo Christophe Saout Anne-Marie Magnan André Holzner Ta-Yung Ling Pasquale Fabbricatore K. F. Chen Matthew Nguyen David Stickland G. Apollinari Ashish Kumar M. Felcini Damir Lelas Michel Della Negra Amitabh Lath J. L. Rodriguez Albert M. Sirunyan M. Mulders J.P. Jones F. Palla Karl-Heinz Hoffmann L. Uplegger S. Bansal R. Walsh

During 2010 the LHC delivered pp collisions with a centre-of-mass energy of 7 TeV. In this paper, results comprehensive studies missing transverse as measured by CMS detector are presented. The cover measurements scale and resolution for energy, effects multiple interactions within same bunch crossings on resolution. Anomalous studied, algorithms their identification described. performance several reconstruction calculating compared. An algorithm, called missing-transverse-energy...

10.1088/1748-0221/6/09/p09001 article EN Journal of Instrumentation 2011-09-09

Dataset quality heavily impacts the predictive performance of data-driven modelling. This issue can be exacerbated in prediction agricultural production due to complex interactions between climate, environment and way plant is affected by these conditions during season. study aims create an empirical model predict Head Rice Yield (HRY), primary metric for rice growers millers globally. Model development focused on industry-level dataset made available SunRice, Australia's most prominent...

10.1016/j.compag.2024.108716 article EN cc-by Computers and Electronics in Agriculture 2024-02-22

10.18154/rwth-2018-224141 article EN Journal of High Energy Physics 2018-04-11

A bstract search for new top quark interactions is performed within the framework of an effective field theory using associated production either one or two quarks with a Z boson in multilepton final states. The data sample corresponds to integrated luminosity 138 fb − 1 proton-proton collisions at $$ \sqrt{s} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> </mml:math> = 13 TeV collected by CMS experiment LHC. Five dimension-six operators...

10.1007/jhep12(2021)083 article EN cc-by Journal of High Energy Physics 2021-12-01

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,...

10.22323/1.213.0346 article EN cc-by-nc-sa Proceedings of Technology and Instrumentation in Particle Physics 2014 — PoS(TIPP2014) 2015-07-03

The CMS beam and radiation monitoring subsystem BCM1F (Fast Beam Condition Monitor) consists of 8 individual diamond sensors situated around the pipe within pixel detector volume, for purpose fast bunch-by-bunch background collision products. In addition, effort is ongoing to use as an online luminosity monitor. will be running whenever there in LHC, its data acquisition independent from detector, hence it delivers even when not taking data. A report given on performance during LHC run I,...

10.1016/j.nima.2014.05.008 article EN cc-by Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2014-05-14

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...

10.1088/1748-0221/11/01/c01088 article EN cc-by Journal of Instrumentation 2016-01-29

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...

10.1109/nssmic.2011.6153979 article EN IEEE Nuclear Science Symposium conference record 2011-10-01

A new pixel detector for the CMS experiment was built in order to cope with instantaneous luminosities anticipated Phase I Upgrade of LHC . The provides four-hit tracking a reduced material budget as well cooling and powering schemes. front-end readout chip mitigates buffering bandwidth limitations, allows operation at low comparator thresholds. In this paper, comprehensive test beam studies are presented, which have been conducted verify design quantify performance assemblies terms...

10.1088/1748-0221/12/05/p05022 article EN cc-by Journal of Instrumentation 2017-05-30

10.18154/rwth-2017-08431 article EN 2017-02-03

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...

10.1016/j.phpro.2012.05.330 article EN Physics Procedia 2012-01-01

The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment consists several beam monitoring systems luminometers. upgraded Fast Conditions Monitor is based on 24 single crystal diamond sensors with a two-pad metallization custom designed readout. Signals for real time are transmitted to counting room, where they received processed by new back-end electronics measure count rates LHC collision, induced background activation products be used determine luminosity machine...

10.1088/1748-0221/10/02/c02020 article EN cc-by Journal of Instrumentation 2015-02-11

The Beam Radiation Instrumentation and Luminosity Project of the CMS experiment, consists several beam monitoring systems. One system, upgraded Fast Beams Condition Monitor, is based on 24 single crystal CVD diamonds with a double-pad sensor metallization custom designed readout. Signals for real-time are transmitted to counting room, where they received processed by new back-end electronics extract information LHC collision, induced background activation products. Slow Control Driver...

10.1117/12.2076023 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 2014-11-25

Background: Alexia without agraphia (AWA) is an acquired reading disturbance associated with left posterior cerebral artery (PCA) infarction. Based on autopsy and neuroimaging, there are two explanations for its pathogenesis: a visual cortex–language cortex disconnection word-form agnosia. Our goal was to discover if more refined brain imaging in case–control study would provide further support either of these hypotheses. Methods: A neuroradiologist masked the presence AWA reviewed...

10.1097/wno.0000000000002263 article EN Journal of Neuro-Ophthalmology 2024-11-25

We discuss possible deviations from QED produced by a virtual excited spin-3/2 lepton in the reaction ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}2\ensuremath{\gamma}.$ Data recorded OPAL Collaboration at c.m. energy $\sqrt{s}=183 \mathrm{GeV}$ are used to establish bounds on nonstandard-lepton mass and coupling strengths.

10.1103/physrevd.60.077302 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 1999-09-13

In this paper we analyze the effects of anomalous gauge boson couplings $Z\ensuremath{\gamma}\ensuremath{\gamma}$ and $Z\ensuremath{\gamma}Z$ vertices in radiative M\o{}ller scattering ${(e}^{\ensuremath{-}}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}\ensuremath{\gamma})$ at Next Linear Collider (NLC). The 95% confidence level limits for these trilinear are evaluated considering three different sets ${e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$ NLC...

10.1103/physrevd.65.055011 article EN Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 2002-02-20

The Fast Beam Conditions Monitor, BCM1F, is one among the beam conditions and radiation monitors installed in around CMS detector. It flux of particles with nanosecond time resolution was designed to give a fast response being able trigger possible harmful losses. Since November 2009, when LHC restarted running beams providing proton-proton collisions, BCM1F has been recording data from beam-halo collision particles. performance during last year operations here presented.

10.1109/nssmic.2010.5874040 article EN 2010-10-01
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