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R. P. Johnson

Thomas Jefferson National Accelerator Facility · US
Area of research
Nuclear and High Energy Physics · Aerospace Engineering
Research interest
Research interests include Particle physics theoretical and experimental studies, Particle accelerators and beam dynamics, Quantum Chromodynamics and Particle Interactions, and High-Energy Particle Collisions Research.
h-index
68
citations
19,990
works
952
NIH funding
primary concept
email

Recent publications

Searching for prompt and long-lived dark photons in electroproduced <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math> pairs with the heavy photon search experiment at JLab
Physical review. D/Physical review. D. 2023cited by 7position: middledoi
The accuracy of helium ion CT based particle therapy range prediction: an experimental study comparing different particle and x-ray CT modalities
Physics in Medicine and Biology 2021cited by 13position: middledoi
Enhancement of Photoemission on p-Type GaAs Using Surface Acoustic Waves
Sensors 2020cited by 6position: contributordoi
Experimental comparison of proton CT and dual energy x-ray CT for relative stopping power estimation in proton therapy
Physics in Medicine and Biology 2019cited by 77position: middledoi
Prediction of image noise contributions in proton computed tomography and comparison to measurements
Physics in Medicine and Biology 2019cited by 23position: middledoi
The US Electron Ion Collider Accelerator Designs
OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) 2019cited by 0position: middledoi
The impact of secondary fragments on the image quality of helium ion imaging
Physics in Medicine and Biology 2018cited by 25position: middledoi
Software platform for simulation of a prototype proton <scp>CT</scp> scanner
Medical Physics 2017cited by 52position: middledoi
Stopping power accuracy and achievable spatial resolution of helium ion imaging using a prototype particle CT detector system
Current Directions in Biomedical Engineering 2017cited by 26position: middledoi
Results from a Prototype Proton-CT Head Scanner
Physics Procedia 2017cited by 24position: firstdoi
Novel scintillation detector design and performance for proton radiography and computed tomography
Medical Physics 2016cited by 71position: middledoi
An evaluation of spatial resolution of a prototype proton CT scanner
Medical Physics 2016cited by 38position: middledoi
Operation of the preclinical head scanner for proton CT
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2016cited by 35position: middledoi
Dosimetric evaluation of proton CT using a prototype proton CT scanner
2016cited by 3position: middledoi
SU‐F‐I‐54: Spatial Resolution Studies in Proton CT Using a Phase‐II Prototype Head Scanner
Medical Physics 2016cited by 3position: middledoi
<i>FERMI</i> LARGE AREA TELESCOPE THIRD SOURCE CATALOG
The Astrophysical Journal Supplement Series 2015cited by 1,477position: middledoi
Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology 2015cited by 317position: middledoi
A Fast Experimental Scanner for Proton CT: Technical Performance and First Experience With Phantom Scans
IEEE Transactions on Nuclear Science 2015cited by 84position: firstdoi
Results from a pre-clinical head scanner for proton CT
2014cited by 4position: firstdoi
Track reconstruction with the silicon strip tracker of the proton CT Phase 2 scanner
2014cited by 3position: middledoi
Spatial resolution studies for a prototype proton CT scanner
2014cited by 1position: middledoi
THE SECOND <i>FERMI</i> LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
The Astrophysical Journal Supplement Series 2013cited by 839position: middledoi
DETERMINATION OF THE POINT-SPREAD FUNCTION FOR THE<i>FERMI</i>LARGE AREA TELESCOPE FROM ON-ORBIT DATA AND LIMITS ON PAIR HALOS OF ACTIVE GALACTIC NUCLEI
The Astrophysical Journal 2013cited by 81position: middledoi
<i>FERMI</i>-LAT OBSERVATIONS OF THE DIFFUSE γ-RAY EMISSION: IMPLICATIONS FOR COSMIC RAYS AND THE INTERSTELLAR MEDIUM
The Astrophysical Journal 2012cited by 729position: middledoi
THE <i>FERMI</i> LARGE AREA TELESCOPE ON ORBIT: EVENT CLASSIFICATION, INSTRUMENT RESPONSE FUNCTIONS, AND CALIBRATION
The Astrophysical Journal Supplement Series 2012cited by 517position: middledoi
SEARCH FOR DARK MATTER SATELLITES USING<i>FERMI</i>-LAT
The Astrophysical Journal 2012cited by 162position: middledoi

Grants

Collaborative Research: Speleothem Constraints on Decadal to Orbital Scale Hydroclimate Variations in Mainland Southeast Asia
NSF2503867$476,8782025–2028PIRePORTER
Implementation Grant: A Learning and Institutional Model to Accelerate Transformations for Environmental Solutions
NSF2228216$7,500,0002023–2027PIRePORTER
CAREER: Risk-Based Methods for Robust, Adaptive, and Equitable Flood Risk Management in a Changing Climate
NSF2238060$500,0002023–2028PIRePORTER
SAI-R: Reducing Natural Hazards Risks by Incorporating Community Impacts and Equity
NSF2228559$742,3532022–2026PIRePORTER
Collaborative Research: P2C2--Speleothem Constraints on Seasonal Hydroclimate Variability in Mainland Southeast Asia since the Late Pleistocene
NSF2103129$607,7062021–2025PIRePORTER
Collaborative Research: GEM--Radiation Belt Losses Using Combined Global Hybrid and Test Particle Simulations
NSF2131013$385,6562021–2026PIRePORTER
Collaborative Proposal: MRA: Using NEON data to elucidate the ecological effects of global environmental change on phenology across time and space
NSF2017463$108,9682021–2024PIRePORTER
Collaborative Research:CIBR:VectorByte: A Global Informatics Platform for studying the Ecology of Vector-Borne Diseases
NSF2016264$899,9082020–2026PIRePORTER
Collaborative Research: Scalable Kilo-Pixel Detector Modules Based on Polarization Sensitive Multi-Chroic Aluminum Manganese MKIDs
NSF2019531$300,4072020–2022PIRePORTER
CNH2-L: Developing adaptive capacity in wildfire-prone regions
NSF1922866$1,590,8612019–2024PIRePORTER
Collaborative Research: P2C2: Reconstructing Northeast Mexico Hydroclimate since the Last Interglacial Period
NSF1806090$402,3002019–2024PIRePORTER
CAREER: Quantifying heterogeneity and uncertainty in the transmission of vector borne diseases with a Bayesian trait-based framework
NSF1750113$700,0002018–2024PIRePORTER
REU Site: Matrix Analysis, Combinatorics, and Applications
NSF1757603$250,0002018–2022PIRePORTER
Collaborative Research: Scalable Kilo-Pixel Detector Modules Based on Polarization Sensitive Multi-Chroic Aluminum Manganese MKIDs
NSF1711160$442,5412017–2020PIRePORTER
Collaborative Research: P2C2--Calibrating South East Asian Proxies: Speleothems and Tree-Rings
NSF1603056$329,4762017–2020PIRePORTER
14th International Conference on Mid-IR Optoelectronics: Materials and Devices; October 7 - 10, 2018, Flagstaff, Arizona, USA
NSF1745167$10,0002017–2019PIRePORTER
Quantifying How Bioenergetics and Foraging Determine Population Dynamics in Threatened Antarctic Albatrosses
NSF1740239$185,6692016–2020PIRePORTER
Collaborative Research: Polarization Sensitive Multi-Chroic MKIDs
NSF1509211$298,1142015–2017PIRePORTER

Frequent collaborators

R. Schulte · Loma Linda University16 papers (2014–2021)V. Bashkirov · University of California, Santa Cruz15 papers (2014–2019)Valentina Giacometti · University of Wollongong11 papers (2014–2017)H. F-W. Sadrozinski · University of Kansas11 papers (2014–2017)Tia Plautz · Medical College of Wisconsin10 papers (2014–2017)Pierluigi Piersimoni · Saint Camillus International University of Health and Medical Sciences9 papers (2014–2018)A. Zatserklyaniy · University of California, Santa Cruz8 papers (2014–2017) · 7 papers (2014–2016)Lennart Volz · GSI Helmholtz Centre for Heavy Ion Research4 papers (2017–2021)Keith E. Schubert · Baylor University4 papers (2014–2017) · 3 papers (2017–2019)Katia Parodi · Ludwig-Maximilians-Universität München3 papers (2017–2019)Joao Seco · German Cancer Research Center3 papers (2017–2021)Blake Schultze · Baylor University3 papers (2014–2016)G. Dedes · Université Claude Bernard Lyon 12 papers (2019–2019)Nicholas Vence · University of Tennessee at Knoxville2 papers (2014–2014)Jannis Dickmann · Siemens Healthineers (Germany)2 papers (2019–2019)Anatoly Rosenfeld · University of Wollongong2 papers (2016–2017)Susanna Guatelli · University of Wollongong2 papers (2016–2017) · 2 papers (2016–2017)