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in creator/contributor: "Lebedev, V."  
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Beam-beam effects in the Tevatron Run II

Description: Electromagnetic long-range and head-on interactions of high intensity proton and antiproton beams are significant sources of beam loss and lifetime limitations in the Tevatron Collider Run II (2001-present). We present observations of the beam-beam phenomena in the Tevatron and results of relevant beam studies. We analyze the data and various methods employed in high energy physics (HEP) operation, predict the performance for planned luminosity upgrades and discuss ways to improve it.
Date: May 1, 2005
Creator: Shiltsev, V.; Alexahin, Yu.; Lebedev, V.; Lebrun, P.; Moore, R.; Sen, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cylindric electron envelope for relativistic electron cooling

Description: Electron cooling requires small angles between the electrons and the cooled particles. In other words, the electron beam has to be of a cylindrical shape in the cooling section. How to satisfy this requirement for a specific case of a relativistic electron beam transport for the Fermilab electron cooling project? In fact, the requirement splits into two parts: for the beam centroid and its envelope. A straight centroid motion means a good field quality and zero initial conditions; this issue is… more
Date: February 1, 2005
Creator: Burov, A. & Lebedev, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Beam-beam effects in the Tevatron

Description: The Tevatron in Collider Run II (2001-present) is operating with 6 times more bunches, many times higher beam intensities and luminosities than in Run I (1992-1995). Electromagnetic long-range and head-on interactions of high intensity proton and antiproton beams have been significant sources of beam loss and lifetime limitations. We present observations of the beam-beam phenomena in the Tevatron and results of relevant beam studies. We analyze the data and various methods employed in operation… more
Date: January 1, 2005
Creator: Shiltsev, V.; Alexahin, Y.; Lebedev, V.; Lebrun, P.; Moore, R. S.; Sen, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Single and multiple intrabeam scattering in hadron colliders

Description: Single and multiple intra-beam scattering are usually considered separately. Such separation works well for electron-positron colliders but usually yields only coarse description in the case of hadron colliders. Boltzmann type integro-differential equation is used to describe evolution of longitudinal distribution due to IBS. The finite size of the longitudinal potential well, its non-linearity and x-y coupling are taken into account. The model predictions for longitudinal and transverse distri… more
Date: January 1, 2005
Creator: Lebedev, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Collective instabilities in the Tevatron Complex

Description: Although the luminosity growth for Tevatron Run II was slower than expected, steady growth of luminosity has been demonstrated during the last three years with the peak luminosity of 1.02 x 10{sup 32} cm{sup -2} s{sup -1} achieved in July 2004. Suppression of instabilities has been a valuable contributor to the luminosity growth. This report discusses the transverse instabilities in the Tevatron and Recycler.
Date: January 1, 2005
Creator: Lebedev, V. & Burov, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optics of electron beam in the Recycler

Description: Electron cooling of 8.9 GeV/c antiprotons in the Recycler ring (Fermilab) requires high current and good quality of the DC electron beam. Electron trajectories of {approx}0.2 A or higher DC electron beam have to be parallel in the cooling section, within {approx}0.2 mrad, making the beam envelope cylindrical. These requirements yielded a specific scheme of the electron transport from a gun to the cooling section, with electrostatic acceleration and deceleration in the Pelletron. Recuperation of… more
Date: November 1, 2005
Creator: Burov, Alexey V.; Kazakevich, G.; Kroc, T.; Lebedev, V.; Nagaitsev, S.; Prost, L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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