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Anello Di Accumulazione
ADA (short for Anello Di Accumulazione, also stylized as AdA) was one of the first Italian particle accelerators and the first-ever electron–positron particle collider, measuring approximately in diameter and designed to store beams of 250 MeV. History The AdA collider was built at the LNF ( Frascati National Laboratory) in Frascati by a group of Italian physicists led by the Austrian physicist Bruno Touschek, the person to propose the idea of its development. During this time, many American physicists were interested in colliding two beams of particles head-on instead of beams on fixed targets''.'' ADA replaced one of the beams of particles (electrons) with a beam of antiparticles (positrons), a modification that was new and never before tested. After the machine's construction, it was operated from 1961 to 1964 by the National Institute of Nuclear Physics, in Frascati, Italy. In 1962, the machine was relocated to the Laboratoire de l’Accelerateur Lineaire in Orsay, Fra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land border, as well as List of islands of Italy, nearly 800 islands, notably Sicily and Sardinia. Italy shares land borders with France to the west; Switzerland and Austria to the north; Slovenia to the east; and the two enclaves of Vatican City and San Marino. It is the List of European countries by area, tenth-largest country in Europe by area, covering , and the third-most populous member state of the European Union, with nearly 59 million inhabitants. Italy's capital and List of cities in Italy, largest city is Rome; other major cities include Milan, Naples, Turin, Palermo, Bologna, Florence, Genoa, and Venice. The history of Italy goes back to numerous List of ancient peoples of Italy, Italic peoples—notably including the ancient Romans, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Accelerator
A particle accelerator is a machine that uses electromagnetic fields to propel electric charge, charged particles to very high speeds and energies to contain them in well-defined particle beam, beams. Small accelerators are used for fundamental research in particle physics. Accelerators are also used as synchrotron light sources for the study of condensed matter physics. Smaller particle accelerators are used in a wide variety of applications, including particle therapy for oncology, oncological purposes, Isotopes in medicine, radioisotope production for medical diagnostics, Ion implantation, ion implanters for the manufacturing of Semiconductor, semiconductors, and Accelerator mass spectrometry, accelerator mass spectrometers for measurements of rare isotopes such as radiocarbon. Large accelerators include the Relativistic Heavy Ion Collider at Brookhaven National Laboratory in New York, and the largest accelerator, the Large Hadron Collider near Geneva, Switzerland, operated b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron
The electron (, or in nuclear reactions) is a subatomic particle with a negative one elementary charge, elementary electric charge. It is a fundamental particle that comprises the ordinary matter that makes up the universe, along with up quark, up and down quark, down quarks. Electrons are extremely lightweight particles that orbit the positively charged atomic nucleus, nucleus of atoms. Their negative charge is balanced by the positive charge of protons in the nucleus, giving atoms their overall electric charge#Charge neutrality, neutral charge. Ordinary matter is composed of atoms, each consisting of a positively charged nucleus surrounded by a number of orbiting electrons equal to the number of protons. The configuration and energy levels of these orbiting electrons determine the chemical properties of an atom. Electrons are bound to the nucleus to different degrees. The outermost or valence electron, valence electrons are the least tightly bound and are responsible for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Positron
The positron or antielectron is the particle with an electric charge of +1''elementary charge, e'', a Spin (physics), spin of 1/2 (the same as the electron), and the same Electron rest mass, mass as an electron. It is the antiparticle (antimatter counterpart) of the electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more photons. Positrons can be created by positron emission radioactive decay (through weak interactions), or by pair production from a sufficiently energetic photon which is interacting with an atom in a material. History Theory In 1928, Paul Dirac published a paper proposing that electrons can have both a positive and negative charge. This paper introduced the Dirac equation, a unification of quantum mechanics, special relativity, and the then-new concept of electron Spin (physics), spin to explain the Zeeman effect. The paper did not explicitly predict a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Collider
In the physical sciences, a particle (or corpuscle in older texts) is a small localized object which can be described by several physical or chemical properties, such as volume, density, or mass. They vary greatly in size or quantity, from subatomic particles like the electron, to microscopic particles like atoms and molecules, to macroscopic particles like powders and other granular materials. Particles can also be used to create scientific models of even larger objects depending on their density, such as humans moving in a crowd or celestial bodies in motion. The term ''particle'' is rather general in meaning, and is refined as needed by various scientific fields. Anything that is composed of particles may be referred to as being particulate. However, the noun '' particulate'' is most frequently used to refer to pollutants in the Earth's atmosphere, which are a suspension of unconnected particles, rather than a connected particle aggregation. Conceptual properti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frascati National Laboratory
The INFN National Laboratory of Frascati (LNF) was founded in 1954 with the objective of furthering particle physics research, and more specifically to host the 1.1 GeV electrosynchrotron, the first accelerator ever built in Italy. The Laboratory later developed the first ever electron-positron collider: from the first prototype AdA, which demonstrated the feasibility, to the ring ADONE and later on to DAΦNE, still operative today (2024). LNF was also the proposed site of the cancelled particle accelerator SuperB. Besides conducting experiments with their own facilities, the LNF researchers are also taking part in extensive collaborations at external laboratories, especially at CERN and in the United States. It is located in Frascati, Italy. History and activity The INFN National Laboratory of Frascati was founded in 1954 to host an electron synchrotron of 1.1 GeV. The Electron Synchrotron (also known as the Electron Synchrotron of Frascati, "elettrosincrotrone di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruno Touschek
Bruno Touschek (3 February 1921 – 25 May 1978) was an Austrian physicist, a survivor of the Holocaust, and initiator of research on electron-positron colliders. Biography Touschek was born and attended school in Vienna. In 1937, he was not allowed to finish high school since his mother was Jewish. He passed the final year exam in a different school as an external pupil. Shortly after he started studying physics and mathematics at the university in Vienna, he again had to quit for racial reasons. Thanks to a couple of friends, he could keep on studying in Hamburg, where nobody knew of his origins. In order to make a living, he took up several jobs at the same time. During this period, he worked at the Studiengesellschaft für Elektronengeräte, a company affiliated to Philips, where "drift tubes"—the forerunners of the klystron—were being developed at that time. In 1943, he asked Rolf Widerøe to cooperate with him in building a betatron, critically studying an article ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Istituto Nazionale Di Fisica Nucleare
The Istituto Nazionale di Fisica Nucleare (INFN; "National Institute for Nuclear Physics") is the coordinating institution for nuclear, particle, theoretical and astroparticle physics in Italy. History INFN was founded on the 8th of August 1951, to further the nuclear physics research tradition initiated by Enrico Fermi in Rome, in the 1930s. The INFN collaborates with CERN, Fermilab and various other laboratories in the world. In recent years it has provided important contributions to grid computing. During the latter half of the 1950s, the INFN designed and constructed the first Italian electron accelerator—the electron synchrotron developed in Frascati. In the early 1960s, it also constructed in Frascati the first ever electron-positron collider ( ADA - ''Anello Di Accumulazione''), under the scientific leadership of Bruno Touschek. In 1968, Frascati began operating ADONE (''big'' AdA), which was the first high-energy particle collider, having a beam energy of 1.5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frascati
Frascati () is a city and in the Metropolitan City of Rome Capital in the Lazio region of central Italy. It is located south-east of Rome, on the Alban Hills close to the ancient city of Tusculum. Frascati is closely associated with science, being the location of several international scientific laboratories. Frascati produces the white wine with the same name. It is also a historical and artistic centre. History The most important archeological finding in the area, dating back to Ancient Roman times, during the late Republican Age, is a patrician Roman villa probably belonging to Lucullus. In the first century AD its owner was Gaius Sallustius Crispus Passienus, who married Agrippina the Younger, mother of Nero. His properties were later confiscated by the Flavian imperial dynasty (69–96 AD). Consul Flavius Clemens lived in the villa with his wife Domitilla during the rule of Domitian. According to the ''Liber Pontificalis'', in the 9th century Frascati was a little vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laboratori Nazionali Di Frascati
The INFN National Laboratory of Frascati (LNF) was founded in 1954 with the objective of furthering particle physics research, and more specifically to host the 1.1 GeV electrosynchrotron, the first accelerator ever built in Italy. The Laboratory later developed the first ever electron-positron collider: from the first prototype AdA, which demonstrated the feasibility, to the ring ADONE and later on to DAΦNE, still operative today (2024). LNF was also the proposed site of the cancelled particle accelerator SuperB. Besides conducting experiments with their own facilities, the LNF researchers are also taking part in extensive collaborations at external laboratories, especially at CERN and in the United States. It is located in Frascati, Italy. History and activity The INFN National Laboratory of Frascati was founded in 1954 to host an electron synchrotron of 1.1 GeV. The Electron Synchrotron (also known as the Electron Synchrotron of Frascati, "elettrosincrotrone d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ADONE
ADONE (''big AdA'') was a high-energy (beam energy 1.5 GeV, center-of-mass energy 3 GeV) particle collider. It collided electrons with their antiparticles, positrons. It was 105 meters in circumference. It was operated from 1969 to 1993, by the National Institute of Nuclear Physics (INFN) at the Frascati National Laboratory (LNF), in Frascati, Italy. See also * ADA collider *Istituto Nazionale di Fisica Nucleare *Laboratori Nazionali di Frascati The INFN National Laboratory of Frascati (LNF) was founded in 1954 with the objective of furthering particle physics research, and more specifically to host the 1.1 GeV electrosynchrotron, the first accelerator ever built in Italy. The La ... References Particle accelerators {{accelerator-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CERN
The European Organization for Nuclear Research, known as CERN (; ; ), is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, western suburb of Geneva, on the France–Switzerland border. It comprises #Member states and budget, 24 member states. Israel, admitted in 2013, is the only full member geographically out of Europe. CERN is an official United Nations General Assembly observers#Intergovernmental organizations, United Nations General Assembly observer. The acronym CERN is also used to refer to the laboratory; in 2023, it had 2,666 scientific, technical, and administrative staff members, and hosted about 12,370 users from institutions in more than 80 countries. In 2016, CERN generated 49 Byte#Multiple-byte units, petabytes of data. CERN's main function is to provide the particle accelerators and other infrastructure needed for high-energy physics research – consequently, numer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
