Experiments on Electron Cooling

Budker, G.I.; Derbenev, Ya. S.; Dikansky, N.S.; Kudelainen, V.I.; Мешков, И. Н.; Parkhomchuk, V. V.; Pestrikov, D.V.; Sukhina, B.; Skrinsky, A.N.

doi:10.1109/tns.1975.4328070

Cited by 51 publications

(37 citation statements)

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“…5), where cooling was applied after successive deceleration to three or four intermediate momenta. At and below 300 MeV/c, the electron cooling technique, as initially demonstrated by Budker et al (Budker, 1966;Budker et al, 1975;Budker and Skrinsky, 1978) was found to be more efficient than stochastic cooling and permitted energies as low as 2 MeV (momentum ϳ61 MeV/c) to be attained. In electron cooling the antiprotons transferred energy by collisions to a velocity-matched (comoving) electron beam; the increase in their phase-space volume was effectively transferred to the phase space of the electron beam.…”

Section: Learmentioning

confidence: 96%

Forty years of antiprotons

Eades

Hartmann

1999

Rev. Mod. Phys.

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The discovery of the antiproton some 40 years ago and the almost synchronous fall of parity (P) and charge conjugation (C) symmetries were soon followed by the realization that CPT rather than C invariance is the fundamental symmetry connecting matter and antimatter, and that consequently any measurement of the antiproton's properties can be interpreted as a test of that symmetry. It is the latter view of the antiproton, as an object of study in its own right, rather than as a means to such other ends as the production of gauge bosons and meson resonances, that is presented here. The authors review the technical steps that have led from the handful of antiprotons observed by Chamberlain, Segrè , Wiegand, and Ypsilantis to the intense, high-quality beams available today and show how the state of rest and isolation required for high precision measurements of their properties can be achieved by confining them in electromagnetic traps or in their microscopic counterparts, exotic atoms. The test bench role of antiprotons and antihydrogen atoms for both CPT symmetry and the gravitational weak equivalence principle is discussed, and the body of experimental results obtained since 1955 critically reviewed from this standpoint. Future experiments are then discussed in the light of the closure of the CERN Low Energy Antiproton Ring (LEAR), its replacement in 1999 by the Antiproton Decelerator (AD), and the likely antiproton source at the Japan Hadron Facility.[S0034-6861(99)00401-8] CONTENTS

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Section: Learmentioning

confidence: 96%

Forty years of antiprotons

Eades

Hartmann

1999

Rev. Mod. Phys.

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“…In the 1970s, when particle accelerators for higher energy (some GeV region) were planed and constructed the question of cooling particles in a storage ring became a hot issue. Two methods were debated at CERN for further use in the accelerators in order to reduce the large phase space spread of an ion, proton or antiproton beam in the ring: 'Electron cooling' proposed by Gersh Itskovich Budker [105] and successfully applied at the Novosibirsk storage ring [106] and 'stochastic cooling' invented by Simon van der Meer at CERN.…”

Section: A Mary Bellmentioning

confidence: 99%

Bell’s Universe: A Personal Recollection

Bertlmann

2016

Quantum [Un]Speakables II

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My collaboration and friendship with John Bell is recollected. I will explain his outstanding contributions in particle physics, in accelerator physics, and his joint work with Mary Bell. Mary's work in accelerator physics is also summarized. I recall our quantum debates, mention some personal reminiscences, and give my personal view on Bell's fundamental work on quantum theory, in particular, on the concept of contextuality and nonlocality of quantum physics. Finally, I describe the huge influence Bell had on my own work, in particular on entanglement and Bell inequalities in particle physics and their experimental verification, and on mathematical physics, where some geometric aspects of the quantum states are illustrated.

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“…The method was proposed by G. Budker in 1967 [6], successfully tested in 1974 with low-energy protons [7], and later implemented at a dozen of storage rings (see, for example, a review [8]) at non-relativistic electron energies, Ee < 300 keV. Table 2 shows the cooler design parameters.…”

Section: Recycler Electron Cooling Systemmentioning

confidence: 99%

Fermilab 4.3 MeV electron cooler

2015

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The Recycler Electron Cooler (REC) was the first cooler working at a relativistic energy (γ = 9.5). It was successfully developed in 1995-2004 and was in operation at Fermilab in 2005-2011, providing cooling of antiprotons in the Recycler ring. After introducing the physics of electron cooling and the REC system, this paper describes measurements carried out to tune the electron beam and optimize its cooling properties. In particular, we discuss the cooling strategy adopted for maximizing the collider integrated luminosity.

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Experiments on Electron Cooling

Cited by 51 publications

References 0 publications

Forty years of antiprotons

Forty years of antiprotons

Bell’s Universe: A Personal Recollection

Fermilab 4.3 MeV electron cooler

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