View allAll Photos Tagged NuclearPhysics
A capture of a passerby looking towards the MIT nuclear reactor. The imputation that he might see it as 'his own' is purely fictional on my part! This reactor is an established and integral part of the MIT campus, and is known for its very safe design.http://web.mit.edu/nrl/www/
See also: web.mit.edu/nrl/www/reactor/reactor.htm
Details of water cooled copper coils as part of the MOLLER Experiment is seen inside the SRF Test Lab at Jefferson Lab in Newport News, Va., on Wednesday, May 9, 2024. (Aileen Devlin | Jefferson Lab)
The Measurement of a Lepton-Lepton Electroweak Reaction (MOLLER) experiment proposes to measure the parity-violating asymmetry in electron-electron (Møller) scattering. The measurement will be carried out at Jefferson Laboratory's state-of-the-art accelerator by rapidly flipping the longitudinal polarization of electrons that have been accelerated to 11 GeV and observing the resulting fractional difference in the probability of these electrons scattering off atomic electrons in a liquid hydrogen target. This asymmetry is proportional to the weak charge of the electron, which in turn is a function of the electroweak mixing angle, a fundamental parameter of the electroweak theory. The accuracy of the proposed measurement allows for a low energy determination of the mixing angle with precision on par with the two best measurements at electron-positron colliders.
This portrait of Professor Hans Bethe is displayed in Los Alamos. In those days, he was the head of the Manhattan Project's theoretical group. He was a Noble Prize winning physicist who determined the nuclear source of the sun's energy. The sun is mainly composed of hydrogen nuclei. Hans Bethe identified the process by which the sun synthesizes the elements of ascending atomic numbers greater than that of hydrogen. He showed it was based on a catalytic cycle involving nuclear elements up through carbon nuclei. I was fortunate to have him review my work in later years.
After I received my Ph.D. in Nuclear Physics from M.I.T. in 1965, I worked for a company in a town near M.I.T.. The founder, Arthur Kantrowitz, was a Professor at Cornell, as was Hans Bethe. Hans came each month as a consultant. He reviewed significant work and gave his thoughts and recommendations. I presented work at Committee meetings for him to review. He was pleased with my group's results. I spoke with him again a few years later when he gave a lecture at The Weizmann Institute of Science in Rehovot, Israel. His lecture was about the creation of the elements above hydrogen in the sun that are observed in the discrete spectral lines in the sun's continuous light spectrum. The nuclear creation process involves a catalytic nuclear cycle from hydrogen up through carbon. That was the work for which he had received the Nobel Prize in Physics years earlier. Needless to say, it was a wonderful presentation.
Afterwards, I went up to talk to him. I told him that I was struck with the similarities between his presentation and the work we were doing, that he had reviewed at AERL. He said “I was often struck by the very same thought.”
Needless to say, I was pleased, actually thrilled, that he had good memories of me.
Details of water cooled copper coils as part of the MOLLER Experiment is seen inside the SRF Test Lab at Jefferson Lab in Newport News, Va., on Wednesday, May 9, 2024. (Aileen Devlin | Jefferson Lab)
The Measurement of a Lepton-Lepton Electroweak Reaction (MOLLER) experiment proposes to measure the parity-violating asymmetry in electron-electron (Møller) scattering. The measurement will be carried out at Jefferson Laboratory's state-of-the-art accelerator by rapidly flipping the longitudinal polarization of electrons that have been accelerated to 11 GeV and observing the resulting fractional difference in the probability of these electrons scattering off atomic electrons in a liquid hydrogen target. This asymmetry is proportional to the weak charge of the electron, which in turn is a function of the electroweak mixing angle, a fundamental parameter of the electroweak theory. The accuracy of the proposed measurement allows for a low energy determination of the mixing angle with precision on par with the two best measurements at electron-positron colliders.
Details of water cooled copper coils as part of the MOLLER Experiment is seen inside the SRF Test Lab at Jefferson Lab in Newport News, Va., on Wednesday, May 9, 2024. (Aileen Devlin | Jefferson Lab)
The Measurement of a Lepton-Lepton Electroweak Reaction (MOLLER) experiment proposes to measure the parity-violating asymmetry in electron-electron (Møller) scattering. The measurement will be carried out at Jefferson Laboratory's state-of-the-art accelerator by rapidly flipping the longitudinal polarization of electrons that have been accelerated to 11 GeV and observing the resulting fractional difference in the probability of these electrons scattering off atomic electrons in a liquid hydrogen target. This asymmetry is proportional to the weak charge of the electron, which in turn is a function of the electroweak mixing angle, a fundamental parameter of the electroweak theory. The accuracy of the proposed measurement allows for a low energy determination of the mixing angle with precision on par with the two best measurements at electron-positron colliders.
Details of the calorimeter modules after being removed from the detector and placed aside for restoration inside Experimental Hall D at Jefferson Lab in Newport News, Va., on Wednesday, May 24, 2023. (Aileen Devlin | Jefferson Lab)
Members of the Hampton University Proton Therapy Institute (HUPTI) and the Leo Cancer Center walk through the SRF Test Lab during a tour of Jefferson Lab on Thursday, Mar. 2, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Today, Hampton University Proton Therapy Institute - HUPTI announced a partnership with Leo Cancer Care to develop an upright proton arc therapy treatment technique for cancer.
The technique will allow patients to stand or sit upright and, combined with an additional CT system, may better target tumors in patients.
Jefferson Lab is proud to contribute to these efforts by applying its nuclear physics and technology expertise to help pave the way for improvements in patient care.
Review members take a tour of the SRF Test Lab at Jefferson Lab during the EIC OPA Review on Wednesday, Feb. 1, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Closing reception on day four of the Computing in High Energy & Nuclear Physics (CHEP) conference held at the Waterside District in downtown Norfolk, Va., on Tuesday, May 11, 2023. (Aileen Devlin | Jefferson Lab)
Large dipole magnets are seen inside the North Linac tunnel during a tour on Wednesday, Feb. 1, 2023. (Photo by Aileen Devlin | Jefferson Lab)
The MVTX, a pixel-based vertex detector, is one of three components that will work together to measure the position to determine the momentum of all charged particles emerging from RHIC’s collisions.sPHENIX is a radical makeover of the PHENIX experiment, one of the original detectors designed to collect data at Brookhaven Lab’s Relativistic Heavy Ion Collider. It includes many new components that significantly enhance scientists’ ability to learn about quark-gluon plasma (QGP), an exotic form of nuclear matter created in RHIC’s energetic particle smashups.
Details of T-mapping equipment used for testing niobium cavities temperatures is seen inside the Vertical Test Area (VTA) in Jefferson Lab’s SRF Test Lab in Newport News, Va., on Wednesday, May 9, 2024. (Aileen Devlin | Jefferson Lab)
Unassembled cryomodules wait for further work inside the SRF Test Lab at Jefferson Lab in Newport News, Va., on Thursday, June 22, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Rebuilt quadrupole magnets are ready for shipment at Jefferson Lab in Newport News, Va. These rebuilt magnets will be shipped to Brookhaven National Lab to be a part of the Electron Storage Ring for the Electron-Ion Collider. Wednesday, Oct. 16, 2024.
(Aileen Devlin | Jefferson Lab)
These magnets came from Argonne National Laboratory, which shipped the 30-year-old Advanced Photon Source (APS) magnets to Brookhaven and Jefferson Lab, where they will be re-purposed for use as part of the Electron-Ion Collider (EIC), a state-of-the-art particle collider being led by those other two labs and that will be built at Brookhaven.
Artificial light shines along an eight-celled niobium cavity photographed at the Low Energy Recirculator Facility (LERF) at Jefferson Lab in Newport News, Va., on Wednesday, Aug. 21, 2024. (Aileen Devlin | Jefferson Lab)
This particulate cavity is created at Jefferson Lab out of a metal called Niobium.
Niobium, at room temperature, has electrical resistance and behaves just like copper. If, however, niobium is cooled to very low temperatures, it loses all electrical resistance and becomes what scientists call a superconductor. Since superconductors have no electrical resistance, electrical currents flowing through them do not lose any energy and do not produce any waste heat. If no heat is created, the cavities can not heat up and the accelerator does not need to shut down to allow them to cool. The use of superconductive niobium cavities allows the accelerator to provide a continuous beam of electrons to the experiments.
Creator/Photographer: Unidentified photographer
Medium: Medium unknown
Dimensions: 9.3 cm x 6.2 cm
Date: prior to1937
Collection: Scientific Identity: Portraits from the Dibner Library of the History of Science and Technology - As a supplement to the Dibner Library for the History of Science and Technology's collection of written works by scientists, engineers, natural philosophers, and inventors, the library also has a collection of thousands of portraits of these individuals. The portraits come in a variety of formats: drawings, woodcuts, engravings, paintings, and photographs, all collected by donor Bern Dibner. Presented here are a few photos from the collection, from the late 19th and early 20th century.
Repository: Smithsonian Institution Libraries
Accession number: SIL14-R004-07
Rebuilt quadrupole magnets are ready for shipment at Jefferson Lab in Newport News, Va. These rebuilt magnets will be shipped to Brookhaven National Lab to be a part of the Electron Storage Ring for the Electron-Ion Collider. Wednesday, Oct. 16, 2024.
(Aileen Devlin | Jefferson Lab)
These magnets came from Argonne National Laboratory, which shipped the 30-year-old Advanced Photon Source (APS) magnets to Brookhaven and Jefferson Lab, where they will be re-purposed for use as part of the Electron-Ion Collider (EIC), a state-of-the-art particle collider being led by those other two labs and that will be built at Brookhaven.
Details of T-mapping equipment used for testing niobium cavities temperatures is seen inside the Vertical Test Area (VTA) in Jefferson Lab’s SRF Test Lab in Newport News, Va., on Wednesday, May 9, 2024. (Aileen Devlin | Jefferson Lab)
inside Hall D at Jefferson Lab in Newport News, Va., on Jun. 7, 2024. (Photo by Aileen Devlin | Jefferson Lab)
University of North Carolina Wilmington (UNCW) Physics Professor Liping Gan
Hall D is dedicated to the operation of a large-acceptance detector for experiments with a broad-band, linearly-polarized photon beam produced by ~12 GeV electrons from CEBAF.
Thomas Jefferson National Accelerator Facility (Jefferson Lab) provides scientists worldwide the lab’s unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF), to probe the most basic building blocks of matter by conducting research at the frontiers of nuclear physics (NP) and related disciplines.
In addition, the lab capitalizes on its unique technologies and expertise to perform advanced computing and applied research with industry and university partners, and provides programs designed to help educate the next generation in science and technology. Thursday, December 1, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Cryomodules line the north linac section of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab in Newport News Va., on May 4, 2023. (Aileen Devlin | Jefferson Lab)
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Before the tour, Jefferson Lab Deputy Director David Dean gives the visiting members an overview of the lab discussing research, facilities, and general knowldge at the Virginia Tech Newport News Center. (Photo by Aileen Devlin | Jefferson Lab)
Buds begin to bloom on an eastern redbud tree at the entrance of Jefferson Lab in Newport News, Va., on Thursday, March 15, 2023. (Photo by Aileen Devlin | Jefferson Lab)
SRF Mechanical Fabrication & Assembly Technician Aaron Auston, right, checks the parameters as a crane is used to move a LCLS-II HE vacuum vessel inside the Test Lab at Jefferson Lab in Newport News, Va., on Aug. 20, 2025. (Aileen Devlin | Jefferson Lab)
Components are placed within the braising furnace inside the Furnace Room at the SRF Test Lab at Jefferson Lab on Thursday, Dec. 1, 2022. (Photo by Aileen Devlin | Jefferson Lab)
This is a portrait of Lise Meitner and her explanation of nuclear fission. Meitner is shown in dark silver ink with a neutron flying from her brow towards a uranium nucleus, and the ensuing chain reaction is shown in red. The print is in an edition of 6 printed on white Japanese kozo (or mulberry) paper, 12.3 inches by 12.5 inches (31.2 cm by 31.8 cm).
Lise Meitner (7 November 1878 – 27 October 1968) was a world-class physicist who collaborated with chemists Otto Hahn and Fritz Straßmann in the 1930s in Berlin. The team was investigating whether there were any stable elements beyond uranium, on the periodic table. They discovered that bombarding nucleus of uranium-235 with neutrons that they actually triggered it to fission, or break, into two nuclei of roughly half the size and some free neutrons! Hahn's chemistry allowed the startling discovery and identification of barium, but no explanation of the mechanism involved; Meitner's physics provided the explaination of how fission could be possible and its implications. Otto Hahn was awarded the 1945 Nobel prize for chemistry. Though Meitner won many accolades, the Nobel committee neglected her contribution, in one of the most blattant and eggregious instances of their overlooking women's scientific acheivements.
Cosmic Highway group tour the Low Energy Recirculator Facility (LERF) of Jefferson Lab in Newport News, Va., on Friday, June 16, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Members of this group consist of local business and technology leaders who focus on innovation for the Virginia Peninsula.
The cyclotron itself is buried under the concrete blocks in the distance - it's a large, vague disc-shape surrounded by magnets. Charged particles are injected into the centre and accelerated outwards in a spiral - hence the 'cyclotron' name.
University of Virginia Professor of Physics Gordon Cates presents during the Winter Hall A Collaboration meeting held at Jefferson Lab on Tuesday, January 26, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Winter Hall A Collaboration meeting session will cover presentations of the results of recent or near publications, updates on Physics analysis, theory seminars, and seminars oriented towards students' updates on the upcoming and future experiments.
Attendees mingle and enjoy coffee and cake during the 30th anniversary of the CLAS Collaboration 30th workshop at Jefferson Lab in Newport News, Va., on Thursday, November 2, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Group shot of various Jefferson Lab employees on Thursday, November 2, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Cosmic Highway group tour the Low Energy Recirculator Facility (LERF) of Jefferson Lab in Newport News, Va., on Friday, June 16, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Members of this group consist of local business and technology leaders who focus on innovation for the Virginia Peninsula.
Thomas Jefferson National Accelerator Facility (Jefferson Lab) provides scientists worldwide the lab’s unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF), to probe the most basic building blocks of matter by conducting research at the frontiers of nuclear physics (NP) and related disciplines.
In addition, the lab capitalizes on its unique technologies and expertise to perform advanced computing and applied research with industry and university partners, and provides programs designed to help educate the next generation in science and technology. Thursday, December 1, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Closing reception on day four of the Computing in High Energy & Nuclear Physics (CHEP) conference held at the Waterside District in downtown Norfolk, Va., on Tuesday, May 11, 2023. (Aileen Devlin | Jefferson Lab)
Components are placed within the braising furnace inside the Furnace Room at the SRF Test Lab at Jefferson Lab on Thursday, Dec. 1, 2022. (Photo by Aileen Devlin | Jefferson Lab)
SRF Crymodule Assembly Tech Mike Murphy, left, and Design Engineer Naeem Huque, left, work inside a mobile clean room to install a LCLS-HE power coupler into a cyromodule at the SRF Test Lab at Jefferson Lab on Dec. 7, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Copyright © 2013 by Ian J MacDonald. Permission required for any use. All rights reserved
The entire set: www.flickr.com/photos/ianmacdonald/sets/72157636356726526/
These illustrations are meant to represent the elements of the periodic table. The drawings are influenced by the Art Deco friezes seen on buildings of the 1920s and 30s - deities were used to represent the essence of the ideas being represented; such as industries, scientific ideas, civic ideals etc...
While the Art Deco style is an influence I did not want to directly copy what has been already been done or hang slavishly onto examples of Art Deco. I am endeavoring to work in the style, imagining creating something new in that moment when Art Deco was current.
Each element is represented by a goddess embedded in a representational background. The deities are purposely done in a sketchy manner - opposite to the solid background - to represent the quantum mechanical nature of atoms and particles. In quantum mechanics particles have no meaning as solid defined units of matter but are statistical entities described by complex (literally and mathematically) wave functions that provide us with the probable positions and energies of particles and systems of particles - an unsettling prospect for many people.
I represent the essence of the elements by goddesses for several reasons. One, they are more interesting, complex, beautiful to draw than males. Secondly it is more challenging to represent the essence of the elements in a feminine rather than a male manner. Unfortunately, science and chemistry has been male dominated and as such so has the naming and descriptions of the elements. These are meant to somewhat challenge the viewer by juxtaposing the female essence with male dominance in science. It would be too simple and cliche to represent iron, for example, as a Mars-like God. Some of the elements are quite dangerous to living creatures and it is far more challenging to express that in a feminine manner.
I was asked if people would get past the nudity. The answer is "No". But that is OK. I want the beauty and vulnerability to attract attention. Science is after all quite beautiful if one takes the time to stop fighting the math and difficulties in understanding, and immerse themselves in it to appreciate just how weird and strange nature really is be - far beyond anything humans could come up with. The nudity somewhat represents the primal, elemental nature of the different atoms. Clothing, such as suit of armor for iron, is a distraction and again too simple and cliche.
But all in all the representation is not direct. Some influence comes from the elements' names - often from properties of the elements, literary references, where they were isolated, political rivalries, honors for discoverers etc... Some influence comes from the bulk properties of the elements such as harness, conductivity, toxicity, density, etc.... Some of the pieces are inspired by the major uses for the element - in industrial processes, in natural biological processes, nuclear reactions, nucleosynthesis, in everyday objects, and so on.
This is a work in progress and my second go at it. I have been tinkering at this for some time and I think these are closer to the vision in my head than what I have done earlier. Enjoy.
Scientists from Argonne National Laboratory and the University of Chicago have created one of the world's largest samples of Monte Carlo simulated proton-proton collisions. Read more »
This image shows what happens in a detector after colliding two protons, each with an energy of roughly 50 TeV. This single collision event was taken from a simulation of roughly 400 million events. Blue lines represent the tracks of charged particles, red lines represent electrons and muons. Yellow cones represent hadronic jets with energies above 3 TeV.
Image by Sergei Chekanov.
Members of the Oppenheimer Science and Energy Leadership Program (OSELP) tour the accelerator tunnel with Deputy Associate Director for Accelerator Operations Mike Spata, right, at Jefferson Lab in Newport News, Va., on Wednesday, May 24, 2023. (Aileen Devlin | Jefferson Lab)
Detector & Imaging Staff Scientist Kondo Gnanvo, left, talks with members of the Hampton University Proton Therapy Institute (HUPTI) and Leo Cancer Care while taking a tour of the lab on Thursday, Mar. 2, 2023. (Photo by Aileen Devlin | Jefferson Lab)
Virginia Governor Glenn Youngkin Chief of Staff Jeff Goettman, center, before a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility on Thursday, Sept. 8, 2022. (Photo by Aileen Devlin | Jefferson Lab)
A bubble chamber - as funny as it may sound - has nothing to do with soapbubbles or soda water or such. These devices were used by nuclear physicists to detect particles which moved through the hot liquid filling the chamber. When racing through the chamber at high speeds the particles left visible traces in the liquid, each one consisting of tiny bubbles.
Members of the Virginia Tech Board of Visitors take a tour of the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) on Monday, Aug. 22, 2022. Superconducting radiofrequency (SRF) Operations Manager Tony Reilly chats and answers questions with visitors during the tour. (Photo by Aileen Devlin | Jefferson Lab)
Network Group Manager Andy Kowalski works inside the Jefferson Lab Data Center on Thursday, Dec. 1, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Thomas Jefferson National Accelerator Facility (Jefferson Lab) provides scientists worldwide the lab’s unique particle accelerator, known as the Continuous Electron Beam Accelerator Facility (CEBAF), to probe the most basic building blocks of matter by conducting research at the frontiers of nuclear physics (NP) and related disciplines.
In addition, the lab capitalizes on its unique technologies and expertise to perform advanced computing and applied research with industry and university partners, and provides programs designed to help educate the next generation in science and technology.
Cavity Processing Chemistry Technician Dimytri Duchenku, left, and SRF Chemistry Technician Alex Wildeson, right, work inside the Lapping and Barrel Polish room in the SRF Test Lab located at Jefferson Lab on Wednesday, November 16, 2022. (Photo by Aileen Devlin | Jefferson Lab)
Day one of the Computing in High Energy & Nuclear Physics (CHEP) conference held at the Marriott in downtown Norfolk, Va., on Monday, May 8, 2023. (Aileen Devlin | Jefferson Lab)
Experts in high-performance computing and data management gathered this week for this 26th international conference. The conference provides a unique opportunity for computing experts across Particle and Nuclear Physics to come and learn together from each other and typically attracts over 500 participants from many countries.