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Showing 2011 · physics.acc-phShow all

19 papers · 2 filters

physics.acc-ph2011

Measurement of magnetic permeability of steel laminations of Booster gradient magnets

Yury Tokpanov, Valeri Lebedev, William Pellico

New experiments at Fermilab require higher beam intensities at Booster, resulting in higher influence of magnet steel on the beam. In order to carefully take these effects into acc…

physics.acc-ph2011★ 5 cited

Status of the LBNE Neutrino Beamline

Vaia Papadimitriou

The Long Baseline Neutrino Experiment (LBNE) will utilize a neutrino beamline facility located at Fermilab to carry out a compelling research program in neutrino physics. The facil…

physics.acc-ph2011★ 3 cited

New methods of particle collimation in colliders

Giulio Stancari

The collimation system is an essential part of the design of any high-power accelerator. Its functions include protection of components from accidental and intentional energy depos…

physics.acc-ph2011★ 1 cited

Diffusion model for the time evolution of particle loss rates in collimator scans: a method for measuring stochastic transverse beam dynamics in circular accelerators

Giulio Stancari

A diffusion model of the time evolution of loss rates caused by a step in collimator position is presented. It builds upon the model of Seidel (1994) and its assumptions: (1) const…

physics.acc-ph2011★ 3 cited

Diffusion dynamics in a Tevatron store

Tanaji Sen

A separator failure during a store in 2002 led to a drop in luminosity, to increased emittance growth and to a drop in beam lifetimes. We show that a simple diffusion model can be…

physics.acc-ph2011

Accelerator Science and Technology Breakthroughs, Achievements and Lessons from the Tevatron*

Vladimir Shiltsev

For almost a quarter of a century, the Tevatron proton-antiproton collider was the centerpiece of the world's high energy physics program - beginning operation in December of 1985…

physics.acc-ph2011★ 47 cited

Generation and Characterization of Electron Bunches with Ramped Current Profiles in a Dual-Frequency Superconducting Linear Accelerator

P. Piot, C. Behrens, C. Gerth +5

We report on the successful experimental generation of electron bunches with ramped current profiles. The technique relies on impressing nonlinear correlations in the longitudinal…

physics.acc-ph2011★ 2 cited

Longitudinal dynamics and tomography in the Tevatron

J. Stogin, T. Sen, R. S. Moore

Motivated by the desire to understand the longitudinal effects of beam-beam forces, we study the longitudinal dynamics of protons and anti-protons at injection and top energy in th…

physics.acc-ph2011★ 5 cited

Status of NbSn accelerator magnet R&D at Fermilab

A. V. Zlobin

New accelerator magnet technology based on Nb3Sn superconductor is being developed at Fermilab since late 90's. Six short dipole models, seven short quadrupole models and numerous…

physics.acc-ph2011★ 1 cited

Using tevatron magnets for HE-LHC or new ring in LHC tunnel

Henryk Piekarz

Two injector accelerator options for HE-LHC of p+ - p+ collisions at 33 TeV cms energy are briefly outlined. One option is based on the Super-SPS (S-SPS) [1] accelerator in the SPS…

physics.acc-ph2011★ 2 cited

Synchrotron radiation damping, intrabeam scattering and beam-beam simulations for HE-LHC

A. Valishev

The proposed High-Energy LHC project presents an unusual combination of strong synchrotron radiation (SR) damping and intrabeam scattering (IBS), which is not seen in present-day h…

physics.acc-ph2011★ 9 cited

Microwave Schottky diagnostic systems for the Fermilab Tevatron, Recycler, and CERN LHC

Ralph J. Pasquinelli, Andreas Jansson

A means for non-invasive measurement of transverse and longitudinal characteristics of bunched beams in synchrotrons has been developed based on high sensitivity slotted waveguide…

physics.acc-ph2011★ 20 cited

Overview of the Tevatron Collider Complex: Goals, Operations and Performance

Stephen Holmes, Ronald S. Moore, Vladimir Shiltsev

For more than two decades the Tevatron proton-antiproton collider was the centerpiece of the world's high energy physics program. The collider was arguably one of the most complex…

physics.acc-ph2011★ 1 cited

Comment on "Particle acceleration by stimulated emission of radiation near a solid-state active medium"

Sergei Nagaitsev

In this Comment I suggest that the authors' proposition to have observed particle acceleration by stimulated emission of radiation (PASER) near a solid-state active medium is incor…

physics.acc-ph2011★ 90 cited

Collimation with hollow electron beams

G. Stancari, A. Valishev, G. Annala +4

A novel concept of controlled halo removal for intense high-energy beams in storage rings and colliders is presented. It is based on the interaction of the circulating beam with a…

physics.acc-ph2011★ 34 cited

Observation of Coherently-Enhanced Tunable Narrow-Band Terahertz Transition Radiation from a Relativistic Sub-Picosecond Electron Bunch Train

P. Piot, Y. -E Sun, T. J. Maxwell +4

We experimentally demonstrate the production of narrow-band (% at THz) THz transition radiation with tunable frequency over [0.37, 0.86] THz. The radia…

physics.acc-ph2011★ 2 cited

Bunch-by-bunch measurement of transverse coherent beam-beam modes in the Fermilab Tevatron collider

Giulio Stancari, Alexander Valishev

A system for bunch-by-bunch detection of transverse proton and antiproton coherent oscillations in the Tevatron is described. It is based on the signal from a single beam-position…

physics.acc-ph2011★ 30 cited

First observation of the exchange of transverse and longitudinal emittances

J. Ruan, A. S. Johnson, A. H. Lumpkin +5

An experimental program to demonstrate a novel phase space manipulation in which the horizontal and longitudinal emittances of a particle beam are exchanged has been completed at t…

physics.acc-ph2011★ 4 cited

Beam-beam simulation code BBSIM for particle accelerators

Hyung J. Kim, Tanaji Sen

A highly efficient, fully parallelized, six-dimensional tracking model for simulating interactions of colliding hadron beams in high energy ring colliders and simulating schemes fo…