The Gamma Factory path to high-luminosity LHC with isoscalar beams
| Autor: | Mieczyslaw Krasny, Alexey Petrenko, Wieslaw Placzek |
|---|---|
| Přispěvatelé: | Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Luminosity (scattering theory) Large Hadron Collider Physics::Instrumentation and Detectors [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] Isoscalar Accelerators and Storage Rings 7. Clean energy beam emittance: transverse calcium: beam Nuclear physics beam: isoscalar beam optics CERN LHC Coll: upgrade Path (graph theory) Physics::Accelerator Physics Factory (object-oriented programming) High Energy Physics::Experiment Nuclear Experiment beam cooling activity report |
| Zdroj: | PoS 40th International Conference on High Energy Physics 40th International Conference on High Energy Physics, Jul 2020, Prague, Czech Republic. pp.690, ⟨10.22323/1.390.0690⟩ |
| Popis: | International audience; There are two main ways to increase LHC luminosity without upgrading CERN injectors: (1) modification of beam-collision optics and (2) reduction of beam transverse emittance. The former is followed in the ongoing high-luminosity upgrade of the LHC (HL-LHC), while the latter, applicable only to ion beams, is described in this contribution. The reduction of the beam emittance can be achieved by employing a laser-cooling technique to bunches of partially stripped ions at the SPS flat-top energy. In the case the isoscalar calcium beams fulfilling the presentbeam-operation constrains, the transverse beam emittance can be reduced in this way by a factor of 5 during the 8 second long cooling phase. This would allow to reach the nucleon–nucleon luminosity L_NN = 4.2 x 10^34 s^(-1)cm^(-2), which is comparable to the levelled luminosity for the HL-LHC proton–proton collisions, but with reduced pile-up background. The calcium–calcium collisions have several advantages over the proton–proton collisions for the electroweak physics, such as precision measurements of the W-boson mass and sin^2_W, clean observation of the Higgs boson decay into bbar in its photoproduction channel or BSM phenomena. If this scheme is confirmed by the future Gamma Factory proof-of-principle experiment, it could be implemented at CERN with minor infrastructure investments. This contribution is based on Ref. [1] |
| Databáze: | OpenAIRE |
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