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Neutrino experiment at Fermilab delivers an unprecedented measurement
Tiny particles known as neutrinos are an excellent tool to study the inner workings of atomic nuclei. Unlike electrons or protons, neutrinos have no electric charge, and they interact with an atom's core only via the weak nuclear force. This makes them a unique tool for probing the building blocks of matter. But the challenge is that neutrinos are hard to produce and detect, and it is very difficult to determine the energy that a neutrino has when it hits an atom.
This week, a group of scientists working on the MiniBooNE experiment at the Department of Energy's Fermilab reported a breakthrough: They were able to identify exactly-known-energy muon neutrinos hitting the atoms at the heart of their particle detector. The result eliminates a major source of uncertainty when testing theoretical models of neutrino interactions and neutrino oscillations.
"The issue of neutrino energy is so important," said Joshua Spitz, Norman M. Leff assistant professor at the University of Michigan and co-leader of the team that made the discovery, along with Joseph Grange at Argonne National Laboratory. "It is extraordinarily rare to know the energy of a neutrino and how much energy it transfers to the target atom. For neutrino-based studies of nuclei, this is the first time it has been achieved."
To learn more about nuclei, physicists shoot particles at atoms and measure how they collide and scatter. If the energy of a particle is sufficiently large, a nucleus hit by the particle can break apart and reveal information about the subatomic forces that bind the nucleus together.
But to get the most accurate measurements, scientists need to know the exact energy of the particle breaking up the atom. That, however, is almost never possible when doing experiments with neutrinos.
Like other muon neutrino experiments, MiniBooNE uses a beam that comprises muon neutrinos with a range of energies. Since neutrinos have no electric charge, scientists have no "filter" that allows them to select neutrinos with a specific energy.
MiniBooNE scientists, however, came up with a clever way to identify the energy of a subset of the muon neutrinos hitting their detector. They realized that their experiment receives some muon neutrinos that have the exact energy of 236 million electronvolts (MeV). These neutrinos stem from the decay of kaons at rest about 86 meters from the MiniBooNE detector emerging from the aluminum core of the particle absorber of the NuMI beamline, which was built for other experiments at Fermilab.
Energetic kaons decay into muon neutrinos with a range of energies. The trick is to identify muon neutrinos that emerge from the decay of kaons at rest. Conservation of energy and momentum then require that all muon neutrinos emerging from the kaon-at-rest decay have to have exactly the energy of 236 MeV.
Source & further reading: https://phys.org/news/2018-04-neutrino-fermilab-unprecedented.html#jCp
Journal article:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.141802
#physics #neutrinos #Fermilab #science
Tiny particles known as neutrinos are an excellent tool to study the inner workings of atomic nuclei. Unlike electrons or protons, neutrinos have no electric charge, and they interact with an atom's core only via the weak nuclear force. This makes them a unique tool for probing the building blocks of matter. But the challenge is that neutrinos are hard to produce and detect, and it is very difficult to determine the energy that a neutrino has when it hits an atom.
This week, a group of scientists working on the MiniBooNE experiment at the Department of Energy's Fermilab reported a breakthrough: They were able to identify exactly-known-energy muon neutrinos hitting the atoms at the heart of their particle detector. The result eliminates a major source of uncertainty when testing theoretical models of neutrino interactions and neutrino oscillations.
"The issue of neutrino energy is so important," said Joshua Spitz, Norman M. Leff assistant professor at the University of Michigan and co-leader of the team that made the discovery, along with Joseph Grange at Argonne National Laboratory. "It is extraordinarily rare to know the energy of a neutrino and how much energy it transfers to the target atom. For neutrino-based studies of nuclei, this is the first time it has been achieved."
To learn more about nuclei, physicists shoot particles at atoms and measure how they collide and scatter. If the energy of a particle is sufficiently large, a nucleus hit by the particle can break apart and reveal information about the subatomic forces that bind the nucleus together.
But to get the most accurate measurements, scientists need to know the exact energy of the particle breaking up the atom. That, however, is almost never possible when doing experiments with neutrinos.
Like other muon neutrino experiments, MiniBooNE uses a beam that comprises muon neutrinos with a range of energies. Since neutrinos have no electric charge, scientists have no "filter" that allows them to select neutrinos with a specific energy.
MiniBooNE scientists, however, came up with a clever way to identify the energy of a subset of the muon neutrinos hitting their detector. They realized that their experiment receives some muon neutrinos that have the exact energy of 236 million electronvolts (MeV). These neutrinos stem from the decay of kaons at rest about 86 meters from the MiniBooNE detector emerging from the aluminum core of the particle absorber of the NuMI beamline, which was built for other experiments at Fermilab.
Energetic kaons decay into muon neutrinos with a range of energies. The trick is to identify muon neutrinos that emerge from the decay of kaons at rest. Conservation of energy and momentum then require that all muon neutrinos emerging from the kaon-at-rest decay have to have exactly the energy of 236 MeV.
Source & further reading: https://phys.org/news/2018-04-neutrino-fermilab-unprecedented.html#jCp
Journal article:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.141802
#physics #neutrinos #Fermilab #science
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Now at age 37, physics and a doctorate in astronomy by USP (University of São Paulo) leads a search for images that help explain the force that makes the universe expand.
The research complements the groundbreaking discovery of gravitational waves, which won the 2017 Nobel Prize for Physics.
Marcelle is the only Brazilian among the 16 leaders of the research coordinated by Fermilab (laboratory of particle physics linked to the US Department of Energy).
"This discovery is something that a scientist of my area may only see once in a lifetime. With the images, we will know where this force comes from which makes the universe expand in an accelerated way," he explains.
Read more by clicking the image below.
Sao Paulo University (USP):
USP Google Plus Profile: https://plus.google.com/u/0/111234737890785507130
USP Webisite: http://www5.usp.br/
Fermilab Webiste: http://www.fnal.gov/
#science #universe #astronomy #USP #Fermilab
The research complements the groundbreaking discovery of gravitational waves, which won the 2017 Nobel Prize for Physics.
Marcelle is the only Brazilian among the 16 leaders of the research coordinated by Fermilab (laboratory of particle physics linked to the US Department of Energy).
"This discovery is something that a scientist of my area may only see once in a lifetime. With the images, we will know where this force comes from which makes the universe expand in an accelerated way," he explains.
Read more by clicking the image below.
Sao Paulo University (USP):
USP Google Plus Profile: https://plus.google.com/u/0/111234737890785507130
USP Webisite: http://www5.usp.br/
Fermilab Webiste: http://www.fnal.gov/
#science #universe #astronomy #USP #Fermilab
Aos 37, brasileira lidera pesquisa que vai "dar luz" à expansão do universo
noticias.uol.com.br
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The recreation of an experiment that began in 1999 could point to an undiscovered particle and completely new physics. The 1999 experiment measured the spin precession of the muon —the speed at which its spin changes direction— to be different from the theoretical predictions. Scientists from the Argonne Laboratory and Fermilab, along with collaborators from more than 25 other institutions, are recreating this experiment with much higher precision to confirm or disprove the former results. If the new data confirm the previous measurement, the scientists plan to conduct the experiment with even higher precision. Analysis of these new data could give a flavor of the nature of the new physics, and could indicate what detector would have to be constructed to observe the potential new particles directly. Read more: https://www.vbt.io/goto/ESx. Drive your new-physics process forward with vacuum technology, ceramic-to-metal seals, and gas delivery solutions from MDC! www.MDCVacuum.com #BrookhavenNationalLab #FermiLab #ArgonneNationalLaboratory #Physics #ParticlePhysics #DepartmentofEnergy #StandardModel #muon #Muons #MuonG2 #VacuumChamber #MDCVacuum #NewPhysics #VacuumTechnology #VacuumScience #HighVacuum #UltraHighVacuum #Research #Science #PhysicsResearch
The recreation of an experiment that began in 1999 could point to an undiscovered particle and completely new physics. The 1999 experiment measured the spin precession of the muon —the speed at which its spin changes direction— to be different from the theoretical predictions. Scientists from Argonne National Laboratory and Fermi National Accelerator Laboratory, along with collaborators from more than 25 other institutions, are recreating this experiment with much higher precision to confirm or disprove the former results. If the new data confirm the previous measurement, the scientists plan to conduct the experiment with even higher precision. Analysis of these new data could give a flavor of the nature of the new physics, and could indicate what detector would have to be constructed to observe the potential new particles directly. Read more: https://www.vbt.io/goto/ESx. Drive your new-physics process forward with vacuum technology, ceramic-to-metal seals, and gas delivery solutions from MDC! www.MDCVacuum.com #BrookhavenNationalLab #FermiLab #ArgonneNationalLaboratory #Physics #ParticlePhysics #DepartmentofEnergy #StandardModel #muon #Muons #MuonG2 #VacuumChamber #MDCVacuum #NewPhysics #VacuumTechnology #VacuumScience #HighVacuum #UltraHighVacuum #Research #Science #PhysicsResearch
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4/23/18
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#Physicists on the #MicroBooNE collaboration at the Department of Energy’s #Fermilab have produced their first collection of science results. Roxanne Guenette of Harvard University presented the results on behalf of the collaboration at the international Neutrino 2018 conference in Germany. The measurements are of three independent quantities that describe neutrino interactions with argon atoms, which make up the 170 tons of total target material used for #neutrino collisions inside the MicroBooNE detector.
MicroBooNE started operations in the fall of 2015. The detector, about the size of a school bus, has recorded hundreds of thousands of neutrino-argon collisions since then. It features a time projection chamber with three wire planes that record the particle tracks created by those collisions, similar to a digital camera recording images of fireworks. The Booster particle accelerator at Fermilab is used to create the muon neutrino beam for the experiment.
It is the first low-energy neutrino experiment to make detailed observations of the subatomic processes that happen when a muon neutrino hits and interacts with an argon atom, leading to showers of secondary particles including protons, pions, muons and more. Using noise-reducing analysis techniques, MicroBooNE scientists can interpret the precise images of the particle tracks.
=> read more at:
http://news.fnal.gov/2018/06/a-boon-for-physicists-new-insights-into-neutrino-interactions/
MicroBooNE started operations in the fall of 2015. The detector, about the size of a school bus, has recorded hundreds of thousands of neutrino-argon collisions since then. It features a time projection chamber with three wire planes that record the particle tracks created by those collisions, similar to a digital camera recording images of fireworks. The Booster particle accelerator at Fermilab is used to create the muon neutrino beam for the experiment.
It is the first low-energy neutrino experiment to make detailed observations of the subatomic processes that happen when a muon neutrino hits and interacts with an argon atom, leading to showers of secondary particles including protons, pions, muons and more. Using noise-reducing analysis techniques, MicroBooNE scientists can interpret the precise images of the particle tracks.
=> read more at:
http://news.fnal.gov/2018/06/a-boon-for-physicists-new-insights-into-neutrino-interactions/
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Neutrino experiment at Fermilab delivers an unprecedented measurement
Tiny particles known as neutrinos are an excellent tool to study the inner workings of atomic nuclei. Unlike electrons or protons, neutrinos have no electric charge, and they interact with an atom's core only via the weak nuclear force. This makes them a unique tool for probing the building blocks of matter. But the challenge is that neutrinos are hard to produce and detect, and it is very difficult to determine the energy that a neutrino has when it hits an atom.
This week, a group of scientists working on the MiniBooNE experiment at the Department of Energy's Fermilab reported a breakthrough: They were able to identify exactly-known-energy muon neutrinos hitting the atoms at the heart of their particle detector. The result eliminates a major source of uncertainty when testing theoretical models of neutrino interactions and neutrino oscillations.
"The issue of neutrino energy is so important," said Joshua Spitz, Norman M. Leff assistant professor at the University of Michigan and co-leader of the team that made the discovery, along with Joseph Grange at Argonne National Laboratory. "It is extraordinarily rare to know the energy of a neutrino and how much energy it transfers to the target atom. For neutrino-based studies of nuclei, this is the first time it has been achieved."
To learn more about nuclei, physicists shoot particles at atoms and measure how they collide and scatter. If the energy of a particle is sufficiently large, a nucleus hit by the particle can break apart and reveal information about the subatomic forces that bind the nucleus together.
But to get the most accurate measurements, scientists need to know the exact energy of the particle breaking up the atom. That, however, is almost never possible when doing experiments with neutrinos.
Like other muon neutrino experiments, MiniBooNE uses a beam that comprises muon neutrinos with a range of energies. Since neutrinos have no electric charge, scientists have no "filter" that allows them to select neutrinos with a specific energy.
MiniBooNE scientists, however, came up with a clever way to identify the energy of a subset of the muon neutrinos hitting their detector. They realized that their experiment receives some muon neutrinos that have the exact energy of 236 million electronvolts (MeV). These neutrinos stem from the decay of kaons at rest about 86 meters from the MiniBooNE detector emerging from the aluminum core of the particle absorber of the NuMI beamline, which was built for other experiments at Fermilab.
Energetic kaons decay into muon neutrinos with a range of energies. The trick is to identify muon neutrinos that emerge from the decay of kaons at rest. Conservation of energy and momentum then require that all muon neutrinos emerging from the kaon-at-rest decay have to have exactly the energy of 236 MeV.
Source & further reading: https://phys.org/news/2018-04-neutrino-fermilab-unprecedented.html#jCp
Journal article:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.141802
#physics #neutrinos #Fermilab #science
Tiny particles known as neutrinos are an excellent tool to study the inner workings of atomic nuclei. Unlike electrons or protons, neutrinos have no electric charge, and they interact with an atom's core only via the weak nuclear force. This makes them a unique tool for probing the building blocks of matter. But the challenge is that neutrinos are hard to produce and detect, and it is very difficult to determine the energy that a neutrino has when it hits an atom.
This week, a group of scientists working on the MiniBooNE experiment at the Department of Energy's Fermilab reported a breakthrough: They were able to identify exactly-known-energy muon neutrinos hitting the atoms at the heart of their particle detector. The result eliminates a major source of uncertainty when testing theoretical models of neutrino interactions and neutrino oscillations.
"The issue of neutrino energy is so important," said Joshua Spitz, Norman M. Leff assistant professor at the University of Michigan and co-leader of the team that made the discovery, along with Joseph Grange at Argonne National Laboratory. "It is extraordinarily rare to know the energy of a neutrino and how much energy it transfers to the target atom. For neutrino-based studies of nuclei, this is the first time it has been achieved."
To learn more about nuclei, physicists shoot particles at atoms and measure how they collide and scatter. If the energy of a particle is sufficiently large, a nucleus hit by the particle can break apart and reveal information about the subatomic forces that bind the nucleus together.
But to get the most accurate measurements, scientists need to know the exact energy of the particle breaking up the atom. That, however, is almost never possible when doing experiments with neutrinos.
Like other muon neutrino experiments, MiniBooNE uses a beam that comprises muon neutrinos with a range of energies. Since neutrinos have no electric charge, scientists have no "filter" that allows them to select neutrinos with a specific energy.
MiniBooNE scientists, however, came up with a clever way to identify the energy of a subset of the muon neutrinos hitting their detector. They realized that their experiment receives some muon neutrinos that have the exact energy of 236 million electronvolts (MeV). These neutrinos stem from the decay of kaons at rest about 86 meters from the MiniBooNE detector emerging from the aluminum core of the particle absorber of the NuMI beamline, which was built for other experiments at Fermilab.
Energetic kaons decay into muon neutrinos with a range of energies. The trick is to identify muon neutrinos that emerge from the decay of kaons at rest. Conservation of energy and momentum then require that all muon neutrinos emerging from the kaon-at-rest decay have to have exactly the energy of 236 MeV.
Source & further reading: https://phys.org/news/2018-04-neutrino-fermilab-unprecedented.html#jCp
Journal article:
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.141802
#physics #neutrinos #Fermilab #science
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About Fermilab
Fermilab is America's particle physics and accelerator laboratory
#fermilab #physics #laboratory #science research
Fermilab is America's particle physics and accelerator laboratory
#fermilab #physics #laboratory #science research
Bioklink
bioklink.tumblr.com
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ASSC | II ACCELERATION CHAMBER_si
DPearce © 2018.
#abstracts
#dawnart2018
#fermilab
#cern
#atomacceleration
#assensation
DPearce © 2018.
#abstracts
#dawnart2018
#fermilab
#cern
#atomacceleration
#assensation
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Scientists have produced the firmest evidence yet of so-called sterile neutrinos, mysterious particles that pass through matter without interacting with it at all. The first hints these elusive particles turned up decades ago. But after years of dedicated searches, scientists have been unable to find any other evidence for them, with many experiments contradicting those old results. These new results now leave scientists with two robust experiments that seem to demonstrate the existence of sterile neutrinos, even as other experiments continue to suggest sterile neutrinos don't exist at all. Read more: https://www.vbt.io/goto/GdO. Drive your neutrino detection process forward with vacuum technology, ceramic-to-metal seals, and gas delivery solutions from MDC! www.MDCVacuum.com #FermiLab #MiniBoone #Neutrino #SterileNeutrino #NeutrinoDetector #ParticleAccelerator #ParticlePhysics #StandardModel #Physics #MDCVacuum #VacuumChamber #HighVacuum #UltraHighVacuum #Research #Muon #VacuumScience #VacuumTech #VacuumTechnology
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6/1/18
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The U.S. Department of Energy has approved funding and start of construction for the SuperCDMS SNOLAB experiment, which will begin operations in the early 2020s to hunt for hypothetical dark matter particles called weakly interacting massive particles, or WIMPs. The experiment will be at least 50 times more sensitive than its predecessor, exploring WIMP properties that can’t be probed by other experiments and giving researchers a powerful new tool to understand one of the biggest mysteries of modern physics. Read more: https://www.vbt.io/goto/FsQ. Drive your dark matter hunting process forward with vacuum technology, ceramic-to-metal seals, and gas delivery solutions from MDC! www.MDCVacuum.com #SuperCDMS #CDMS #SNOLAB #WIMP #WIMPs #MDCVacuum #SLAC #VacuumChamber #PNNL #Fermilab #ParticlePhysics #Physics #Research #StandardModel #Axion #HighVacuum #UltraHighVacuum #VacuumScience #PhysicsResearch #ParticleAccelerator #UndergroundLab #Cryo #Cryogenic #Superconductor #DarkMatterSearch
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5/7/18
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There's so much we still don't know about our universe and how it evolved into the place we call home. Why does matter exist all around us, and how do the tiniest particles fit into the big picture? A worldwide community has embarked on a journey to uncover the secrets of our world with the Deep Underground Neutrino Experiment (DUNE). The project, powered by the Long-Baseline Neutrino Facility, will send neutrinos from the host laboratory, Fermi National Accelerator Laboratory in Illinois, to the Sanford Underground Research Facility in South Dakota. This video explores the excitement, the science, and the mysteries of DUNE: https://youtu.be/qSX7q-X55p4. MDC is proud to support experiments like DUNE by providing researchers with the vacuum equipment they need in order to unlock the mysteries of the Universe. #MDCVacuum #Fermilab #DUNE #neutrino #vacuumtech #vacuumscience #vacuumtechnology #highvacuum #ultrahighvacuum #particleaccelerator #particlephysics #synchrotron #beamline #physics #physicsresearch #universe #theuniverse #research #science
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