Publications (20)
Coherent beam-beam mode in the LHC
X. Buffat, R. Calaga, R. Giachino +4
Observations of single bunch beam-beam coherent modes during dedicated experiments in the LHC are presented. Their role in standard operation for physics is discussed and, in parti…
Narrow bandwidth interference filter-stabilized diode laser systems for the manipulation of neutral atoms
M. Gilowski, Ch. Schubert, M. Zaiser +6
We present and investigate different external cavity diode laser (ECDL) configurations for the manipulation of neutrals atoms, wavelength-stabilized by a narrow-band high transmiss…
Fast manipulation of Bose-Einstein condensates with an atom chip
R. Corgier, S. Amri, W. Herr +6
We present a detailed theoretical analysis of the implementation of shortcut-to-adiabaticity protocols for the fast transport of neutral atoms with atom chips. The objective is to…
Observations of beam-beam effects at the LHC
G. Papotti, X. Buffat, W. Herr +2
This paper introduces a list of observations related to the beam-beam interaction that were collected over the first years of LHC proton physics operation (2010-12). Beam-beam rela…
Stability diagram of colliding beams
X. Buffat, W. Herr, N. Mounet +1
The effect of the beam-beam interactions on the stability of impedance mode is discussed. The detuning is evaluated by the means of single particle tracking in arbitrarily complex…
Operational considerations on the stability of colliding beams
X. Buffat, W. Herr, T. Pieloni
While well studied in the absence of beam-beam and while colliding head-on, the stability of the LHC beams can be very critical in intermediate steps. During the squeeze, the long-…
A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector
J. L. Abelleira Fernandez, C. Adolphsen, A. N. Akay +190
The physics programme and the design are described of a new collider for particle and nuclear physics, the Large Hadron Electron Collider (LHeC), in which a newly built electron be…
Beam-Beam Effects
W. Herr, T. Pieloni
One of the most severe limitations in high-intensity particle colliders is the beam-beam interaction, i.e. the perturbation of the beams as they cross the opposing beams. This intr…
Mathematical and Numerical Methods for Non-linear Beam Dynamics
W. Herr
Non-linear effects in accelerator physics are important for both successful operation of accelerators and during the design stage. Since both of these aspects are closely related,…
Long Range Beam-beam Effects in the LHC
W. Herr, X. Buffat, R. Calaga +4
We report on the experience with long-range beam--beam effects in the LHC, in dedicated studies as well as the experience from operation. Where possible, we compare the observation…
Physics Opportunities with the FCC-hh Injectors
B. Goddard, G. Isidori, F. Teubert +14
In this chapter we explore a few examples of physics opportunities using the existing chain of accelerators at CERN, including potential upgrades. In this context the LHC ring is a…
Machine Layout and Performance
D. Angal-Kalinin, R. Appleby, G. Arduini +57
Chapter 2 in High-Luminosity Large Hadron Collider (HL-LHC) : Preliminary Design Report. The Large Hadron Collider (LHC) is one of the largest scientific instruments ever built. Si…
On the Relation of the LHeC and the LHC
J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic +206
The present note relies on the recently published conceptual design report of the LHeC and extends the first contribution to the European strategy debate in emphasising the role of…
Proceedings of the CAS - CERN Accelerator School: Advanced Accelerator Physics Course, Trondheim, Norway, 18-29 Aug 2013
W. Herr
This report presents the proceedings of the Course on Advanced Accelerator Physics organized by the CERN Accelerator School. The course was held in Trondheim, Norway from 18 to 29…
A Large Hadron Electron Collider at CERN
J. L. Abelleira Fernandez, C. Adolphsen, P. Adzic +206
This document provides a brief overview of the recently published report on the design of the Large Hadron Electron Collider (LHeC), which comprises its physics programme, accelera…
Analysis of long-range studies in the lhc - Comparison with the model
D. Kaltchev, W. Herr
We find that the observed dependencies (scaling) of long-range beam-beam effects on the beam separation and intensity are consistent with the simple assumption that, all other para…
Proceedings of the ICFA Mini-Workshop on Beam-Beam Effects in Hadron Colliders (BB2013), CERN, Geneva, Switzerland, 18 - 22 Mar 2013
W. Herr, G. Papotti
This report contains the Proceedings of the ICFA Mini-Workshop on Beam-Beam Effects in Hadron Colliders held at CERN from 18 to 22 March 2013. It was the first of its kind after th…
STE-QUEST - Test of the Universality of Free Fall Using Cold Atom Interferometry
D. Aguilera, H. Ahlers, B. Battelier +63
The theory of general relativity describes macroscopic phenomena driven by the influence of gravity while quantum mechanics brilliantly accounts for microscopic effects. Despite th…
Introduction to Landau Damping
W. Herr
The mechanism of Landau damping is observed in various systems from plasma oscillations to accelerators. Despite its widespread use, some confusion has been created, partly because…
Interferometry with Bose-Einstein Condensates in Microgravity
H. Müntinga, H. Ahlers, M. Krutzik +41
Atom interferometers covering macroscopic domains of space-time are a spectacular manifestation of the wave nature of matter. Due to their unique coherence properties, Bose-Einstei…