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Showing 1 to 19 of 19 for “"JLab"”.
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Photoproduction and Radiative Decay of ηt Meson in CLAS at JLAB
<p>In this work the <em>η</em><em>/</em><em> </em>meson photoproduction cross sections as well as the distribution of the di-pion invariant mass, <em>m</em>(<em>π</em>+<em>π</em><em>−</em>), in the radiative decay mode <em>η</em><em>/ </em><em>→ π</em>+<em>π</em><em>−</em><em>γ </em>have been …
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A High Precision Measurement of the Proton Charge Radius at JLab
<p>The elastic electron-proton ($e-p$) scattering and the spectroscopy of hydrogen atoms are the two traditional methods to determine the proton charge radius ($r_{p}$). In 2010, a new method using the muonic hydrogen ($\mu$H)\footnote{A muonic hydrogen has its orbiting electron replaced by a …
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JLab E12-14-012 (e,e'p) cross section measurements for Ar and Ti
… and neutrons inside the argon nucleus. The JLab E12-14-012 experiment performed at Jefferson Laboratory in Newport News, Virginia, ran in 2017 and will provide such measurements in Argon and Titanium using electron scattering (e,e'p). The data collected by the experiment covers a wide range …
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Analysis of JLab E12-14-012 Ti(e,e′p) Data and Determination of the Ti Spectral Function
Future long baseline neutrino oscillation experiments like the Deep Underground Neutrino Experiment (DUNE) rely on Liquid Argon Time Projection Chamber (LArTPC) detectors. The reconstruction of neutrino flavors and energy through interactions with Argon is a critical issue for assuring the DUNE …
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Nucleon structure and Its modification in nuclei
… Thomas Jefferson National Accelerator Facility (JLab) seeks to measure this cross-section with high precision up to large momentum transfers. In addition, it is known that the inelastic structure of the nucleon is modified inside the nucleus. This modification, known as the EMC effect, can be …
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Deeply Virtual Compton Scattering at Hall A, Jefferson Lab
… Thomas Jefferson National Accelerator Facility (JLab). This thesis presents the extraction of DVCS cross section in 9 total kinematic points from the 3rd generation experiment (DVCS3) conducted after the 12 GeV upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) of JLab during …
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Exclusive photoproduction of charged pions in hydrogen and deuterium from 1 to 6 GeV
… dependence of differential cross sections. JLab Experiment E94-104 was carried out in Hall A with two high resolution spectrometers. It included the coincidence cross section measurement for the ... process with a deuterium target and the singles measurement for the ... process with a …
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Feasibility and Conceptual Design of a C.W. Positron Source at CEBAF
… source for the 12 GeV upgrade at Jefferson Lab (JLAB) is provided. The proposed ≥ 100 nA Continuous Wave (CW) positron source at JLAB has several unique and challenging characteristics: high current incident electron beam at 126 MeV with a high beam power (up to a MW); CW e−beam and CW e+ …
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UNRAVELING THE NUCLEON 3D STRUCTURE FROM EXPERIMENT, LATTICE, AND GLOBAL ANALYSIS
… dependencies are studied systematically at JLab 12 GeV and future EIC kinematics. They serve as the intrinsic systematic uncertainties in extracting the Compton form factors. More importantly, they are also necessary for understanding cross-section measurements with higher-twist precision …
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Investigation of Ultracold Rubidium Atoms in a Pulsed Far off Resonance Trap
… the free electron laser (FEL) at Jefferson Lab (Jlab) to construct a FORT. The Jlab FEL will provide a tunable, high power laser light source enabling the realization of spatially large and/or energetically deep traps which are not presently accessible with table-top laser sources. Here, a …
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Measurement of Exclusive Photo-Production of K+ Σ*- Quasi-Free off Neutrons In Deuterium
… B at the Thomas Jefferson National Laboratory (JLab) by using the CEBAF Large Acceptance Spectrometer (CLAS) detector system and the tagger system during the EG3 run period from December 2004 to February 2005. Tagged photons with energies from 1.5 to 5.5 GeV are measured in coincidence with K …
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Triple Coincidence Beam Spin Asymmetry Measurements in Deeply Virtual Compton Scattering
… a polarized <sup>3</sup><em>He</em> target with JLab at 12 GeV. These measurements offer the prospect of a determination of all four GPDs.</p>
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A Precision Measurement of the Neutron d2: Probing the Color Force
… by about two standard deviations. Therefore, JLab experiment E06-014, performed in Hall A, made a precision measurement of this quantity. Double spin asymmetries and absolute cross-sections were measured in both DIS and resonance regions by scattering longitudinally polarized electrons at beam …
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Precision measurement of neutron spin asymmetry An1 at large xBj using CEBAF at 5.7 GeV
… (CW) electron beam at Jefferson Laboratory (JLAB) and a high-density polarized 3He target in Hall A, we have measured the neutron spin asymmetry An1 and spin structure function gn1 to a good precision at three kinematics x = 0.33, 0.47 and 0.60, with Q2 = 2.7, 3.6 and 4.9 (GeV/c)2, …
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Simulation and Development of the Radial Time Projection Chamber for the BONuS12 Experiment in CLAS12
… Structure experiment (BONuS12) at Jefferson Lab (JLab) is a second generation experiment upgraded/optimized to advance our knowledge of the neutron's structure using the deep-inelastic scattering of electrons off deuterium. Typically, since deuterium is a nuclear target, corrections for off-shell …
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Measurement of target single-spin asymmetry in charged kaon electroproduction on a transversely polarized 3He target
… experimental setup and data collection of the JLab E06-010 experiment. Details of data analysis will be discussed next with emphasis on the kaon particle identification and the Ring-Imaging Cherenkov detector which are my major responsibilities in this experiment. Finally, results on the kaon …
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Triple-GEM tracker and HCAL-J: two detectors for the study of Nucleon Form Factors at Jefferson Lab.
… A of the Thomas Jefferson National Laboratory (JLab, USA/VA) is underway the integration and installation of the different equipments which will constitute the experimental setup of the new SBS (Super BigBite Spectrometer) physics program, largely devoted to the measurements of the …
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A high average-current electron source for the Jefferson Laboratory free electron laser
… DC gun. The gun is similar to that in the 100mA JLab injector, therefore a tomography diagnostic could in future be applied to that case.
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Inclusive and exclusive electron scattering data analysis from Jefferson Lab experiment E12-14-012
Since the first observations of neutrino oscillation, neutrino experiments have come a long way toward precise measurements of the neutrino oscillation parameters, but some obstacles still remain. The next generation of oscillation experiments, including the Deep Underground Neutrino Experiment …