| Title |
Fringe Fields Modeling for the High Luminosity LHC Large Aperture Quadrupoles |
| Authors |
- B. Dalena, A. Chancépresenter, O. Gabouev
CEA/IRFU, Gif-sur-Yvette, France
- R. Appleby, D.R. Brett
UMAN, Manchester, United Kingdom
- R. De Maria, M. Giovannozzi
CERN, Geneva, Switzerland
- J. Payet
CEA/DSM/IRFU, France
|
| Abstract |
The HL-LHC Upgrade project relies on large aperture magnets (mainly the inner Triplet and the separation dipole D1). The beam is much more sensitive to non-linear perturbations in this region, such as those induced by the fringe fields of the low-beta quadrupoles. Analytical evaluations of detuning with amplitude and chromatic effects show that the effect is small, but not negligible. Therefore, the effect on long-term beam dynamics is evaluated via tracking simulations. Different tracking models are compared in order to provide a numerical estimate of this effect due to the proposed inner triplet quadrupoles. The implementation of the fringe fields in SixTrack, to be used for dynamic apertures studies, is also discussed.
|
| Funding |
The research leading to these results has received funding from the European Commission under the FP7 project HiLumi LHC, GA no. 284404, co-funded by the DoE, USA and KEK, Japan. |
| Paper |
download TUPRO002.PDF [0.506 MB / 4 pages] |
| Export |
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※ EndNote |
| Conference |
IPAC2014, Dresden, Germany |
| Series |
International Particle Accelerator Conference (5th) |
| Proceedings |
Link to full IPAC2014 Proccedings |
| Session |
Poster Session, Ronaldo Area |
| Date |
17-Jun-14 16:00–18:00 |
| Main Classification |
01 Circular and Linear Colliders |
| Sub Classification |
A01 Hadron Colliders |
| Keywords |
quadrupole, simulation, luminosity, multipole, controls |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Christine Petit-Jean-Genaz (CERN, Geneva, Switzerland); Gianluigi Arduini (CERN, Geneva, Switzerland); Peter Michel (HZDR, Dresden, Germany); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-132-8 |
| Published |
July 2014 |
| Copyright |
|
