Evaluation of luminosity reduction in the ILC head-on scheme from parasitic collisions
| Autor: | J. Brossard, Philip Bambade, Thibault J.-Y. Derrien, Deepa Angal-Kalinin, M. Alabau, Olivier Napoly, J. Payet |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
DIMAD program
detector analysis Acceleration Jitter Kink instability electrostatic separators kink instability Linear particle accelerator bunch distributions luminosity reduction Colliding beam accelerators Particle separators Apertures Electrostatics Linear accelerators multibeam kink instability long-range beam-beam forces physics analysis Analytical models beam manipulations post collision beam line Physics Luminosity (scattering theory) Interaction point linear colliders Detector Performance analysis interaction point particle beam bunching spent beam extraction Computational physics Bunches particle beam extraction ILC Physics::Accelerator Physics Atomic physics particle beam stability Beam (structure) Guinea-Pig program |
| Zdroj: | 759371 3 pp. (2007). doi:10.3204/PUBDB-2023-01621 |
| DOI: | 10.3204/PUBDB-2023-01621 |
| Popis: | 759371 3 pp. (2007). An interaction region with head-on collisions is being developed for the ILC as an alternative to the base line 14 mrad crossing angle design, motivated by simpler beam manipulations upstream of the interaction point (IP) and a more favourable configuration for the detector and physics analysis. The design of the post-collision beam line in this scheme involves however a number of technological challenges, one of which is the strength requirement for the electrostatic separators (ES) placed immediately after the final doublet to extract the spent beam. In this paper, we examine in detail the main mechanism behind this requirement, the multi-beam kink instability, which results from the long-range beam-beam forces at the parasitic crossings after the bunches have been extracted. Our analysis uses realistic bunch distributions, the Guinea-Pig program to treat beam-beam effects at the interaction point and the DIMAD program to track the disrupted beam distributions in the post- collision beam line. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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