FCC-ee e⁺e⁻ Injection and Booster rRng
| Autor: | Ramjiawan, Rebecca, Barnes, Michael, Bartmann, Wolfgang, Borburgh, Jan, Chancé, Antoine, Dalena, Barbara, Dutheil, Yann, Hofer, Michael, Howling, Emily, Hunchak, Patrick |
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| Přispěvatelé: | Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
electron positron
beam energy perturbation synchrotron radiation [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] multipole FCC-ee injection booster GeV magnet Accelerator Physics septum injection energy high booster kicker hardware collider beam lifetime orbit |
| Zdroj: | JACoW 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular $e^+e^-$ Colliders 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular $e^+e^-$ Colliders, Sep 2022, Frascati, Italy. pp.THXAT0104, ⟨10.18429/JACoW-eeFACT2022-THXAT0104⟩ |
| DOI: | 10.18429/JACoW-eeFACT2022-THXAT0104⟩ |
| Popis: | The Future Circular electron-positron Collider (FCC-ee) is a proposal for a 91.17 km collider, which would operate in four modes with energies ranging from 45.6 GeV (Z-pole) to 182.5 GeV (ttbar-production). At high energies the beam lifetime could be as low as 6 minutes, requiring the beam to be continuously topped up to reach a high integrated luminosity. This top-up injection would use a separate booster ring in the same tunnel as the collider, which would accelerate the beams to the collider energy. The booster ring should achieve a lower equilibrium emittance than the collider, despite challenges such as a long damping time and no magnet-strength tapering to compensate for the impact of synchrotron radiation. For top-up injection into the collider, we consider two strategies: conventional bump injection, employing a closed orbit bump, and injection using a multipole kicker magnet. On-axis and off-axis sub-schemes will be studied for both. We compare these injection strategies on aspects including spatial constraints, machine protection, perturbation to the stored beam and hardware parameters. Proceedings of the 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders, eeFACT2022, Frascati, Italy |
| Databáze: | OpenAIRE |
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