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Particle Physics in the LHC Era$
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Giles Barr, Robin Devenish, Roman Walczak, and Tony Weidberg

Print publication date: 2016

Print ISBN-13: 9780198748557

Published to Oxford Scholarship Online: March 2016

DOI: 10.1093/acprof:oso/9780198748557.001.0001

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Accelerators

Accelerators

Chapter:
(p.48) 3 Accelerators
Source:
Particle Physics in the LHC Era
Author(s):

G. Barr

R. Devenish

R. Walczak

T. Weidberg

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198748557.003.0003

This chapter gives an introduction to accelerator physics, concentrating on synchrotrons. Accelerating cavities for standing and travelling radiofrequency (RF) waves, the synchronicity requirement, and the beam bunch structure are explained, as well as the energy loss due to synchrotron radiation. The beam emittance and the amplitude β‎ function are introduced to describe the ensemble of beam trajectories. Dipole and quadrupole magnets, which act as the most important elements of so-called beam optics, are described. The LHC superconducting dipole magnets are described in some detail as an example. Colliders and fixed-target accelerators are then compared in terms of the centre-of-mass energy and the luminosity. As an important example, antiproton–proton colliders, including the use of stochastic cooling, are described and the chapter concludes with the outlook for accelerator developments in future decades.

Keywords:   Radiofrequency, synchronicity, synchrotron, synchrotron radiation, beam emittance, amplitude beta function, dipole, quadrupole, beam optics, stochastic cooling

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