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High-efficiency beam extraction and collimation using channeling in very short bent crystals.
TLDR
A silicon crystal was used to channel and extract 70 GeV protons from the U-70 accelerator with an efficiency of 85.3+/-2.8%, which provides crucial support for implementing crystal-assisted slow extraction and collimation in other machines, such as the Tevatron, RHIC, the AGS, the SNS, COSY, and the LHC. Expand
Turbulent free convection between vertical isothermal plates with asymmetrical heating
Results of numerical investigation of the flow and heat transfer at turbulent free convection between the vertical parallel isothermal plates with different temperatures are presented. TheExpand
A study of collimation and extraction of the U-70 accelerator beam using an axially oriented crystal
Extraction and collimation of the 50-GeV proton beam with a bent silicon crystal at the U-70 accelerator of the Institute for High Energy Physics (Protvino, Russia) was investigated. Until recently,Expand
Investigation of furopyridines. Part 7. Synthesis and antibacterial activity of 1-arylidene-3-oxo-4-thioxofuro[3,4-c]-pyridines
Annelation of 2-butenolide with 2(1H)-pyridinethione leads to a heterocycle system described previously [1]. The presence of a natural biological fragment (butenolide) [2, 3] and data on theExpand
A radiographic facility for the 70-GeV proton accelerator of the institute for high energy physics
A radiographic facility for the 70-GeV proton a ccelerator of the Institute for High Energy Physics is described. The available infrastructure in the initial straight part of the injection channel isExpand
Use of particle reflection in curved crystals to improve beam collimation in a ring accelerator
The staff of the Institute of High-Energy Physics together with researchers from Russian and foreign scientific centers have discovered a new physical phenomenon – reflection of fast charge particlesExpand
Preliminary results on the study of radiation from positrons in a periodically deformed crystal
In the present experiment, the radiation from positrons moving in a periodically deformed crystal was observed for the first time. The spectra of radiation are measured in a wide range of energy. TheExpand
First results of investigation of radiation from positrons in a crystalline undulator
Radiation emitted by positrons moving in a periodically deformed crystal has been experimentally observed for the first time. Radiation spectra have been measured in a wide energy range. ExperimentalExpand
Modeling of the flow patterns and heat transfer in a turbulent bubbly polydispersed flow downstream of a sudden pipe expansion
Abstract Results from the numerical simulation of the structure and heat transfer in polydispersed bubbly turbulent flow, downstream of a sudden pipe expansion, are presented. The structure of theExpand
High-efficiency multipass extraction of 70-GeV protons from an accelerator with a short bent crystal
Abstract Using channeling in a 5-mm crystal with a bending angle of 1.5 mrad, a radical increase in the efficiency of beam extraction from accelerator was achieved due to an increased number ofExpand
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