M. Backfish
A5011727015- Particle accelerators and beam dynamics
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Muon and positron interactions and applications
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Superconducting Materials and Applications
- Electrostatic Discharge in Electronics
- Quantum Chromodynamics and Particle Interactions
- Radiation Therapy and Dosimetry
- High-Energy Particle Collisions Research
- Magnetic confinement fusion research
- Gyrotron and Vacuum Electronics Research
- Research Data Management Practices
- Radiation Effects in Electronics
- Atomic and Subatomic Physics Research
- Terahertz technology and applications
- Atomic and Molecular Physics
- Plasma Diagnostics and Applications
- Nuclear Physics and Applications
- International Science and Diplomacy
- Scientific Computing and Data Management
Fermi National Accelerator Laboratory
2013-2025
University of California, Davis
2024
Indiana University
2013
A search for sub-GeV dark matter produced from collisions of the Fermilab 8 GeV Booster protons with a steel beam dump was performed by MiniBooNE-DM Collaboration using data $1.86\ifmmode\times\else\texttimes\fi{}{10}^{20}$ on target in dedicated run. The MiniBooNE detector, consisting 818 tons mineral oil and located 490 meters downstream dump, is sensitive to variety initiated scattering reactions. Three interactions are considered this analysis: elastic off nucleons, inelastic neutral...
The MiniBooNE-DM Collaboration searched for vector-boson mediated production of dark matter using the Fermilab 8-GeV Booster proton beam in a dedicated run with 1.86×10^{20} protons delivered to steel dump. MiniBooNE detector, 490 m downstream, is sensitive via elastic scattering nucleons detector mineral oil. Analysis methods developed previous results were employed, and several constraining data sets simultaneously analyzed minimize systematic errors from neutrino flux interaction rates....
The LArIAT liquid argon time projection chamber, placed in a tertiary beam of charged particles at the Fermilab Test Beam Facility, has collected large samples pions, muons, electrons, protons, and kaons momentum range 300-1400 MeV/c. This paper describes main aspects detector beamline, also reports on calibrations performed for beamline components.
We report the measurement of final-state products negative pion and muon nuclear capture at rest on argon by LArIAT experiment Fermilab Test Beam Facility. measure a population isolated MeV-scale energy depositions, or blips, in 296 events containing tracks from stopping low-momentum pions muons. The average numbers visible blips are measured to be <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mn>0.74</a:mn><a:mo>±</a:mo><a:mn>0.19</a:mn></a:math> <c:math...
. Prompt gamma timing (PGT) uses the detection time of prompt gammas emitted along range protons in proton radiotherapy to verify position Bragg peak (BP). Cherenkov detectors offer possibility enhanced signal-to-noise ratio (SNR) due inherent physics emission which enhances high energy rays relative other induced uncorrelated signals. In this work, PGT technique was applied 3 semiconductor material slabs that emit only light for use a full scale system: × 20 mm
Liquid Argon Time Projection Chambers (LArTPCs) are ideal detectors for precision neutrino physics. These detectors, when located deep underground, can also be used measurements of proton decay, and astrophysical neutrinos. The technology must completely developed, up to very large mass scales, fully mastered construct operate these this physics program. As part an integrated plan developing accurate in LArTPC known particle species the relevant energy ranges now deemed as necessary. LArIAT...
We present the first measurement of negative pion total hadronic cross section on argon in a restricted phase space, which we performed at Liquid Argon In A Testbeam (LArIAT) experiment. All reaction channels, as well elastic interactions with scattering angle greater than 5\ifmmode^\circ\else\textdegree\fi{} are included. The pions have kinetic energies range 100--700 MeV and produced by beam charged particles impinging solid target Fermilab test facility. LArIAT employs 0.24 ton active...
A first electropolished 201-MHz RF cavity for the international Muon Ionization Cooling Experiment (MICE) has been assembled inside a special vacuum vessel and installed at Fermilab’s MuCool Test Area (MTA). The MTA hall have equipped with numerous instrumentation to characterize operation. commissioned run 14 MV/m gradient no external magnetic field; it is also being in presence of fringe field multiTesla superconducting solenoid magnet, condition which modules will be operated MICE cooling...
Electron cloud beam instabilities are an important consideration in virtually all high-energy particle accelerators and could pose a formidable challenge to forthcoming high-intensity accelerator upgrades. Dedicated tests have shown beampipe coatings dramatically reduce the density of electron accelerators. In this work, we evaluate performance titanium nitride, amorphous carbon, diamond-like carbon as for mitigation Fermilab Main Injector. Altogether our represent 2700 ampere-hours proton...
We report the measurement of final-state products negative pion and muon nuclear capture at rest on argon by LArIAT experiment Fermilab Test Beam Facility. measure a population isolated MeV-scale energy depositions, or blips, in 296 events containing tracks from stopping low-momentum pions muons. The average numbers visible blips are measured to be 0.74 $\pm$ 0.19 1.86 0.17 near track endpoints, respectively. 3.6$\sigma$ statistically significant difference blip content between muons...
The great potential for precision dose delivery with proton therapy remains to be fully exploited, largely due uncertainties in range that require additional conservative treatment margins. Analysis of time distributions from prompt gamma-ray emissions offers a means precisely verify the real and shrink margins, thus increasing effectiveness reducing toxicity. We demonstrate prototype gamma timing system detect shifts, based on Low Gain Avalanche Detectors, used incoming protons, Cherenkov...