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Article
Open AccessMeasurement of the branching fraction of J/ψ → ρπ at KEDR
We present the study of the decay J/ψ → ρπ. The results are based on of 5.2 million J/ψ events collected by the KEDR detector at the VEPP-4M collider. The branching fractions are measured to be
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Article
Experiments with the KEDR Detector at the \({{e}^{ + }}{{e}^{ - }}\) Collider VEPP-4M in the Energy Range \(\sqrt s \) = 1.84–3.88 GeV
The review presents the experiments performed with the KEDR detector at the \({{e}^{ + }}{{e}^{ - }}\) collider VEP...
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Article
Open AccessMeasurement of \(J/\psi \) decays into final states \(2(\pi ^{+}\pi ^{-})\pi ^{0},K^{+}K^{-}\pi ^{+}\pi ^{-}\pi ^{0},\,2(\pi ^{+}\pi ^{-})\) and \(K^{+}K^{-}\pi ^{+}\pi ^{-}\)
Using the 1.32 \(\hbox {pb}^{-1}\) pb - ...
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Article
A Study of the Gettering Characteristics of Getter Pumps for Different Gases
The gettering characteristics of Ti–Zr–Al getter pumps with internal and external heaters have been measured for Н2 and CO. The results are compared to the measured similar characteristics of an NEX‑Torr D 100-05...
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Article
Open AccessAddendum to: Measurement of Γee(J/ψ) with KEDR detector
The electronic width of the J/ψ meson and its product by the branching fractions of J/ψ meson decay to hadrons and electrons measured with the KEDR detector at the VEPP-4M e+e− collider have been reported in ref....
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Article
First Experimental Data on a New SR Beamline of the VEPP-2000 Complex for the HL-LHC Vacuum System
In the framework of the large hadron collider (LHC) upgrade project, new materials are proposed for the vacuum. Amorphous carbon deposited onto the vacuum-chamber wall is examined as a coating with a low secon...
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Article
Vacuum-Tight Connections for Obtaining Ultrahigh Vacuum in Vacuum Systems of Accelerators with Wide-Aperture Chambers
High or ultrahigh vacuum must be provided in new accelerating facilities with wide-aperture vacuum systems, such as FAIR (Darmstadt, Germany) and NICA (Dubna, Russia). One of the problems encountered while des...
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Article
Open AccessMeasurement of Γee(J/ψ) with KEDR detector
The product of the electronic width of the J/ψ meson and the branching fractions of its decay to hadrons and electrons has been measured using the KEDR detector at the VEPP-4M e+e− collider. The obtained values a...
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Article
Status and description of the vacuum system of the NSLS-II booster
Work is now under way at the Brookhaven National Laboratory to develop a third-generation source of synchrotron radiation (SR). An important feature of such SR sources is that storage rings have been developed...
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Article
The KEDR detector
The KEDR detector is a universal magnetic detector designed for studying the c- and b-quarks and two-photon physics, and is employed at the VEPP-4M e + e ...
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Article
Status and description of the vacuum system of the Technological Storage Ring Complex
The status and description of the vacuum system of the Technological Storage Ring Complex of synchrotron radiation source in Zelenograd (Moscow, Russia) are presented.
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Article
An installation for magnetron deposition of getter coatings in narrow-aperture chambers
An installation for magnetron sputtering of thin-film coatings has been designed to deposit getter films in extended vacuum structures with a complex aperture. A solenoid used in the installation (diameter, 60...
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Article
Measurement of the τ lepton mass at the KEDR detector
A precise τ lepton mass measurement performed at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the τ+τ− cross section behavior around the production threshold. The resu...
