A5013448232- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Magnetic confinement fusion research
- Particle physics theoretical and experimental studies
- Gyrotron and Vacuum Electronics Research
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- Distributed and Parallel Computing Systems
- X-ray Spectroscopy and Fluorescence Analysis
- Laser-Plasma Interactions and Diagnostics
- High-Energy Particle Collisions Research
- Advanced Data Storage Technologies
- Radiation Effects in Electronics
- Electron and X-Ray Spectroscopy Techniques
- Intracerebral and Subarachnoid Hemorrhage Research
- Wireless Communication Networks Research
- Quantum Computing Algorithms and Architecture
- Advanced Radiotherapy Techniques
- IPv6, Mobility, Handover, Networks, Security
- Muon and positron interactions and applications
- Parallel Computing and Optimization Techniques
- Cloud Computing and Resource Management
- Scientific Computing and Data Management
Brookhaven National Laboratory
2014-2024
Texas A&M University System
2024
Stony Brook University
2019-2024
Argonne National Laboratory
2022-2024
Mitchell Institute
2024
Texas A&M University
2024
Elekta (Sweden)
2010-2021
Sandia National Laboratories
2021
Nohms Technologies (United States)
2020
Brookhaven College
2019
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
Purpose: MR-guided Radiation Therapy (MRgRT) allows for high-precision radiotherapy under real-time MR visualization. This enables margin reduction and subsequent dose escalation which may lead to higher tumor control less toxicity. The Unity MR-linac (Elekta AB, Stockholm, Sweden) integrates a linear accelerator with 1.5T diagnostic quality MRI an online adaptive workflow. A prospective international registry was established facilitate the evidence-based implementation of into clinical...
Domain-specific languages offer a solution to the performance and productivity issues in heterogeneous computing systems. The Delite compiler framework simplifies process of building embedded parallel DSLs. DSL developers can implement domain-specific operations by extending framework, which provides static optimizations code generation for hardware. runtime automatically schedules executes on
Grenet and Vonnegut have shown that an electrified cloud surrounded by conducting clear air acquires electrical screening layer around its outer boundaries droplet capture of ions. The process has been modeled for conditions in which diffusion is assumed to be negligible. Numerical solutions obtained the charge accumulations, distribution electric field, forces acting on droplets terms length l0 ionic mean free path cloud. maximum concentration found about 0.5417 ∈0E0/l0 with 63% being...
We measured the analyzing power $A$ and spin-spin correlation parameter ${A}_{\mathrm{nn}}$, in large-${P}_{\ensuremath{\perp}}^{2}$ proton-proton elastic scattering, using a polarized-proton target beam at Brookhaven Alternating-Gradient Synchrotron. also used our polarimeter to measure small ${P}_{\ensuremath{\perp}}^{2}$ 13 GeV with good precision found some deviation from expected $\frac{1}{{P}_{\mathrm{lab}}}$ behavior. At 18.5 GeV/c we...
This study investigated the effects of crisis response strategies on attribution an organization's responsibilities and relationship quality outcomes determined linkages among outcome indicators. found that none tested were helpful in reducing public blame surrounding featured responsibility crisis. also presence itself tends to negatively affect publics examined not influenced by use strategies.
A 9\ifmmode^\circ\else\textdegree\fi{} solenoidal spin rotator or 5% partial Siberian Snake was used to successfully accelerate polarized protons for the first time 10.8 GeV kinetic energy in Brookhaven Alternating Gradient Synchrotron with depolarization due intrinsic resonance crossing. It found that a snake can effectively overcome 18 imperfection resonances this range. We also observed an interference between flip induced by and linear coupling solenoid field of snake.
Accelerating polarized protons to 22 GeV/c at the Brookhaven Alternating Gradient Synchro- tron required both extensive hardware modifications and a difficult commissioning process. We had overcome 45 strong depolarizing resonances maintain polarization up in this strong-focusing synchrotron. At 18.5 we measured analyzing power A spin-spin correlation parameter Ann large- P2⊥ proton-proton elastic scattering, using proton beam target. also obtained high-precision measurement of P2⊥=0.3...
A coherent spin resonance excited by an rf dipole was used to overcome depolarization due intrinsic resonances at the Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory. We found that our data are consistent with a full flip of polarized proton beam, without emittance growth, $G\ensuremath{\gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}12+{\ensuremath{\nu}}_{z}$ and $36\ensuremath{-}{\ensuremath{\nu}}_{z}$, adiabatically exciting vertical betatron oscillation...
Long image acquisition times of 60–120 s for cone-beam CT (CBCT) limit the number patients with lung cancer who can undergo volume guidance under breathhold. We developed a low-dose dual-energy kilovoltage–megavoltage-cone-beam (kVMV-CBCT) based on clinical treatment unit reducing imaging time to ⩽15 s. Simultaneous kVMV-imaging was achieved by dedicated synchronization hardware controlling output linear accelerator (linac) detector panel readout signals, preventing artifacts from...
We explore the possible use of particle beam storage rings as quantum computers. More precisely, we consider creating an ion trap system, in which same computational basis states can be defined a modern but ions have constant velocity and are rotating circular trap. The basic structures that classical ultracold crystalline beams. What propose is novel method uses computer concept, puts into frame reference. benefits this approach discussed.Received 28 February 2020Accepted 4 May...
We measured the analyzing power A out to ${\mathit{P}}_{\mathrm{\ensuremath{\perp}}}^{2}$=7.1 (GeV/c${)}^{2}$ with high precision by scattering a 24-GeV/c unpolarized proton beam from new University of Michigan polarized target; target's 1-W cooling allowed intensity more than 2\ifmmode\times\else\texttimes\fi{}${10}^{11}$ protons per pulse. This together unexpectedly average target polarization about 85% unusually accurate measurements at large...
The spin analyzing power A in 28-GeV/c proton-proton elastic scattering was measured at ${P}_{\ensuremath{\perp}}$${\mathrm{}}^{2}$=6.5 (GeV/c${)}^{2}$ using a polarized proton target and high-intensity unpolarized beam the Brookhaven National Laboratory Alternating Gradient Synchrotron. result of (24\ifmmode\pm\else\textpm\fi{}8)% confirms that is large rising large-${P}_{\ensuremath{\perp}}$${\mathrm{}}^{2}$ region.
Effect of climate change on hydrologic flow regimes, particularly extreme events, necessitates modeling future flows in order to best inform water resources management. This study simulated the Cache Creek watershed California over 21st century using a hydro-climate model (Watershed Environmental Hydrology Hydro-Climate Model; WEHY-HCM) forced by projections. The projections, based four emission scenarios two global models (GCMs), fifth-generation atmospheric and third-generation community...
We report initial results of exposing low-Z solid and high-Z liquid targets to 150-ns, 4/spl times/10/sup 12/ proton pulses with spot sizes on the order 1 2 mm. The energy deposition density approached 100 J/g. Diagnostics included fiberoptic strain sensors target high-speed photography targets. This work is part R&D program Neutrino Factory Muon Collider Collaboration.
We investigate the use of energetic electron beams for high-resolution radiography flaws embedded in thick solid objects. A bright, monoenergetic beam (with energy $>100\text{ }\text{ }\mathrm{MeV}$) was generated by process laser-wakefield acceleration through interaction 50-TW, 30-fs laser pulses with a supersonic helium jet. The high energy, low divergence, and small source size these make them ideal radiographic studies cracks or voids dense materials that are placed at large distance...
A repetitive petawatt-class Ti:sapphire laser system operating with high spatial and temporal beam quality is demonstrated. Maximum pulse energy of 30 J obtained via five multi-pass amplification stages. Closed-loop feedback control systems in the domains are used to yield Fourier-transform-limited duration (33.7 fs), diffraction-limited focal spot sizes (with several different tight focusing optics). The parameters have been fully characterized at high-power, monitored real-time, ensure...
In the era of Internet Things (IoT), increasing numbers applications face challenge using current data management systems to manage massive volume operational gener-ated by sensors and devices. Databases based on time series model, like PI Server, are developed handle such with technology (OT) characteristics (high volume, long lifecycle, simple format). However, while achieving excellent write performance, these database provide limited query capabilities. this paper, we present...