| 1. |
- Lindroos, M., et al.
(författare)
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ESS progressing into construction
- 2016
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Ingår i: IPAC 2016 - Proceedings of the 7th International Particle Accelerator Conference. - 9783954501472 ; , s. 4266-4270
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Konferensbidrag (refereegranskat)abstract
- The construction of the European Spallation Source, ESS, started in summer 2014. At the site in Lund, the accelerator tunnel will be completed at the time of IPAC16, while prototyping and manufacturing or preparations for manpower contributions are going on in more 23 laboratories distributed over the 12 European countries collaborating on the accelerator project. Major technical milestones have been reached include the testing of superconducting cavity prototypes of two families to values above design gradients, the first ESS modulator has been tested to 90 kV and the first klystron prototype has been received in April 2016. Equally important developments are taking place at many partner laboratories. The presentation will summarize the status of the ESS accelerator project by the time of IPAC16.
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| 2. |
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| 3. |
- Persson, Tobias, 1985, et al.
(författare)
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Chromatic coupling correction in the Large Hadron Collider
- 2013
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Ingår i: Physical Review Special Topics - Accelerators and Beams. - 1098-4402. ; 16:8
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Tidskriftsartikel (refereegranskat)abstract
- In this article we present the measurement and correction of the chromatic coupling in the LHC. The transverse coupling is calculated from turn-by-turn data, exciting the beam with an ac dipole. By adjusting the momentum relative to the reference energy and repeating the measurement, we obtain the transverse coupling dependency on momentum. The measurements are compared to the predictions from the magnetic model, and show good agreement. We describe the algorithm used to calculate the corrections, which are performed using skew sextupoles in the LHC lattice. A reduction in the chromatic coupling of a factor 2.5 +/- 0.4 for beam 1 and 1.6 +/- 0.3 for beam 2 was obtained after applying the corrections.
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| 4. |
- Skowroński, P. K., et al.
(författare)
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Optics performance of the LHC during the 2012 run
- 2013
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Ingår i: IPAC 2013: Proceedings of the 4th International Particle Accelerator Conference. - 9783954501229 ; , s. 1433-1435
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Konferensbidrag (refereegranskat)
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| 5. |
- Tomas, R., et al.
(författare)
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Record low beta beating in the LHC
- 2012
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Ingår i: Physical Review Special Topics. Accelerators and Beams. - 1098-4402. ; 15:9
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Tidskriftsartikel (refereegranskat)abstract
- The LHC is currently operating with a proton energy of 4 TeVand beta* functions at the ATLAS and CMS interaction points of 0.6 m. This is close to the design value at 7 TeV ( beta* = 0.55 m) and represented a challenge for various aspects of the machine operation. In particular, a huge effort was put into the optics commissioning and an unprecedented peak beta beating of around 7% was achieved in a high energy hadron collider.
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