| Paper |
Title |
Page |
| TUPTY042 |
Non-linear Coupling Studies in the LHC |
2105 |
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- T. Persson, Y.I. Levinsen, E.H. Maclean, R. Tomás
CERN, Geneva, Switzerland
- E.H. Maclean
JAI, Oxford, United Kingdom
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The amplitude detuning has been observed to decrease significantly as the horizontal and vertical tunes are approaching each other. This effect is potentially harmful since it might cause a loss of Landau damping, hence giving rise to instabilities. The measured tune split (Qx-Qy) versus amplitude is several times bigger than what can be explained with linear coupling. In this paper we present studies performed to identify the dominant sources of the non-linear coupling observed in the LHC.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY042
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| THPF092 |
European Spallation Source Lattice Design Status |
3911 |
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- Y.I. Levinsen
CERN, Geneva, Switzerland
- H. Danared, R. De Prisco, M. Eshraqi, R. Miyamoto, M. Muñoz, A. Ponton, E. Sargsyan
ESS, Lund, Sweden
- S.P. Møller, H.D. Thomsen
ISA, Aarhus, Denmark
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The European Spallation Source will offer an unprecedented beam power for spallation sources of 5 MW. The accelerator will deliver a proton beam of 62.5 mA peak current and 2.0 GeV onto the spallation target. Since the technical design report (TDR) was published in 2013, work has continued to further optimize the accelerator design. We report on the advancements in lattice design optimizations after the TDR to improve performance and flexibility, and reduce cost of the ESS accelerator.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-THPF092
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| THPF078 |
Effect of the Field Maps on the Beam Dynamics of the ESS Drift Tube Linac |
3864 |
| |
- R. De Prisco, M. Eshraqi, Y.I. Levinsen, R. Miyamoto, E. Sargsyan
ESS, Lund, Sweden
- A.R. Karlsson
Lund University, Lund, Sweden
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In the beam dynamic design and modelling of the European Spallation Source (ESS) Drift Tube Linac (DTL) simplified models have been used for the focusing and accelerating structures. Since the high current requires precise control of the beam to minimise the losses it is useful to analyse the beam dynamics by using accurate field maps of the focusing and accelerating structures. In this paper the effects of the 3D-field maps on the beam dynamics of the ESS DTL are presented.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2015-THPF078
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