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Stochastic cooling is a form of particle beam cooling. It is used in some particle accelerators and storage rings to control the emittance of the particle beams in the machine. This process uses the electrical signals that the individual charged particles generate in a feedback loop to reduce the tendency of individual particles to move away from the other particles in the beam.

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  • Stochastische Kühlung (de)
  • Raffreddamento stocastico (it)
  • 確率冷却法 (ja)
  • Arrefecimento estocástico (pt)
  • Stochastic cooling (en)
  • Стохастическое охлаждение (ru)
  • Стохастичне охолодження (uk)
rdfs:comment
  • 確率冷却法(かくりつれいきゃくほう、英:Stochastic Cooling)とは、オランダ人物理学者シモン・ファンデルメールが発明した、イオンビームの運動量を揃え位相空間内での密度を増加させる手法のこと。 (ja)
  • Стохасти́ческое охлажде́ние — метод охлаждения пучков заряженных частиц в ускорителях. Метод предложен Ван дер Меером в 1968 году и впервые применён для охлаждения протонов в кольце ISR в международном центре ЦЕРН в 1975 году. Изобретение было отмечено нобелевской премией по физике в 1984 году, присуждённой Ван дер Мееру (совместно с Карло Руббиа). (ru)
  • Стохастичне охолодження — метод охолодження пучків заряджених частинок у прискорювачах. Метод, запропонований ван дер Мером 1968 року, вперше застосовано для охолодження протонів у кільці у Міжнародному центрі ЦЕРН 1975 року. 1984 року винахід відзначено Нобелівською премією з фізики, присудженою ван дер Меру (спільно з Карло Руббіа). (uk)
  • Stochastische Kühlung ist ein Verfahren, um einen Teilchenstrahl in einem Hochenergiephysik-Experiment zu kühlen, d. h. die Größe des Teilchenpaketes im Phasenraum zu verkleinern. Der Name „Kühlung“ rührt daher, dass die Bewegung der Teilchen relativ zueinander dadurch abnimmt. (de)
  • Stochastic cooling is a form of particle beam cooling. It is used in some particle accelerators and storage rings to control the emittance of the particle beams in the machine. This process uses the electrical signals that the individual charged particles generate in a feedback loop to reduce the tendency of individual particles to move away from the other particles in the beam. (en)
  • Il raffreddamento stocastico è una tecnica per ridurre le differenze in energia e la divergenza angolare in un fascio di particelle cariche. Questo viene fatto misurando la posizione di alcune delle particelle del fascio rispetto alla posizione richiesta e, tenendo conto di questa misura, applicando delle correzioni (un cosiddetto kick, calcio). Questa è un'applicazione della retroazione negativa. Viene chiamato "raffreddamento" perché si può associare una temperatura interna al pacchetto. Se si sottrae l'impulso medio del pacchetto all'impulso di ogni singola particella, le particelle si muoveranno con un moto casuale, come le molecole di un gas. Più questo movimento è vigoroso e più il pacchetto è "caldo". (it)
  • O arrefecimento estocástico é uma técnica para reduzir a dispersão da força transversal de um pacote de partículas num anel de armazenamento detectando as flutuações do momento linear do feixe e aplicando uma correcção ("kick"). Esta é a aplicação da . Chama-se "arrefecimento", porque se pode associar uma temperatura interna ao pacote. Se subtrairmos o momento linear médio do pacote ao momento de cada partícula, então as partículas carregadas deslocam-se com um movimento aleatório, como as moléculas de gás. Quanto mais vigoroso é este movimento mais quente é o pacote. (pt)
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  • Stochastische Kühlung ist ein Verfahren, um einen Teilchenstrahl in einem Hochenergiephysik-Experiment zu kühlen, d. h. die Größe des Teilchenpaketes im Phasenraum zu verkleinern. Der Name „Kühlung“ rührt daher, dass die Bewegung der Teilchen relativ zueinander dadurch abnimmt. Das Verfahren wurde unter Führung von Simon van der Meer an den Intersecting Storage Rings am Forschungszentrum CERN entwickelt. Er erhielt hierfür im Jahre 1984 eine Hälfte des Nobelpreises für Physik, als das Verfahren genutzt wurde, um einen Antiprotonenstrahl in den Speicherring Super Proton Synchrotron am CERN einzuspeisen und so die W- und Z-Bosonen direkt nachzuweisen. (de)
  • Stochastic cooling is a form of particle beam cooling. It is used in some particle accelerators and storage rings to control the emittance of the particle beams in the machine. This process uses the electrical signals that the individual charged particles generate in a feedback loop to reduce the tendency of individual particles to move away from the other particles in the beam. The technique was invented and applied at the Intersecting Storage Rings, and later the Super Proton Synchrotron (SPS), at CERN in Geneva, Switzerland, by Simon van der Meer, a physicist from the Netherlands. It was used to collect and cool antiprotons—these particles were injected into the Proton-Antiproton Collider, a modification of the SPS, with counter-rotating protons and collided at a particle physics experiment. For this work, van der Meer was awarded the Nobel Prize in Physics in 1984. He shared this prize with Carlo Rubbia of Italy, who proposed the Proton-Antiproton Collider. This experiment discovered the W and Z bosons, fundamental particles that carry the weak nuclear force. Before the shutdown of the Tevatron on the 30th of September 2011, Fermi National Accelerator Laboratory used stochastic cooling in its antiproton source. The accumulated antiprotons were sent to the Tevatron to collide with protons at two collision points: the CDF and the D0 experiment. Stochastic cooling in the Tevatron at Fermilab was attempted, but was not fully successful. The equipment was subsequently transferred to Brookhaven National Laboratory, where it was successfully used in a longitudinal cooling system in RHIC, operationally used beginning in 2006. Since 2012 RHIC has 3D operational stochastic cooling, i.e. cooling the horizontal, vertical, and longitudinal planes. (en)
  • Il raffreddamento stocastico è una tecnica per ridurre le differenze in energia e la divergenza angolare in un fascio di particelle cariche. Questo viene fatto misurando la posizione di alcune delle particelle del fascio rispetto alla posizione richiesta e, tenendo conto di questa misura, applicando delle correzioni (un cosiddetto kick, calcio). Questa è un'applicazione della retroazione negativa. Viene chiamato "raffreddamento" perché si può associare una temperatura interna al pacchetto. Se si sottrae l'impulso medio del pacchetto all'impulso di ogni singola particella, le particelle si muoveranno con un moto casuale, come le molecole di un gas. Più questo movimento è vigoroso e più il pacchetto è "caldo". La prima applicazione pratica della tecnica del raffreddamento stocastico fu agli Intersecting Storage Rings al CERN. Nel 1984 è stato assegnato il Premio Nobel per la fisica a Simon van der Meer, insieme a Carlo Rubbia, per aver realizzato il primo raffreddamento stocastico su grande scala al CERN su un fascio di particelle. Il raffreddamento stocastico è stato una tecnica fondamentale per il processo di accumulazione degli antiprotoni al CERN negli anni ottanta e al Fermilab. (it)
  • 確率冷却法(かくりつれいきゃくほう、英:Stochastic Cooling)とは、オランダ人物理学者シモン・ファンデルメールが発明した、イオンビームの運動量を揃え位相空間内での密度を増加させる手法のこと。 (ja)
  • Стохасти́ческое охлажде́ние — метод охлаждения пучков заряженных частиц в ускорителях. Метод предложен Ван дер Меером в 1968 году и впервые применён для охлаждения протонов в кольце ISR в международном центре ЦЕРН в 1975 году. Изобретение было отмечено нобелевской премией по физике в 1984 году, присуждённой Ван дер Мееру (совместно с Карло Руббиа). (ru)
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