Abstract
The optimized vacuum chamber for a future higher-energy hadron collider minimizes electron cloud build-up, outgassing from synchrotron radiation, and heat leakage to the cold mass of the superconducting magnets, while maximizing pumping efficiency and ensuring mechanical stability during a magnet quench.
Highlights
INTRODUCTIONThe Future Circular Hadron Collider (FCC-hh) is a study aiming to propose a 100 km long accelerator as a successor of the 27 km long Large Hadron Collider (LHC) [1,2]
The Future Circular Hadron Collider (FCC-hh) is a study aiming to propose a 100 km long accelerator as a successor of the 27 km long Large Hadron Collider (LHC) [1,2].In the FCC-hh two counterrotating proton beams would achieve an energy of 50 TeV, leading to collisions at 100 TeV at center of mass
This paper proposes a design of a novel beam screen, the element responsible for absorbing the emitted power
Summary
The Future Circular Hadron Collider (FCC-hh) is a study aiming to propose a 100 km long accelerator as a successor of the 27 km long Large Hadron Collider (LHC) [1,2]. The main challenges the FCC-hh BS has to overcome are: (i) the need of a higher pumping speed, to counter the higher gas load in the chamber (derived from the much higher SR power emission), (ii) the higher photoelectron generation ( derived from the higher SR), which may lead to an electron cloud (e− cloud) build-up, (iii) the strong Lorentz forces generated during a magnet quench, derived from the huge dipole magnetic field, (iv) and the heat management These topics and the solutions adopted to address them are covered in this paper, paying special attention to the SR generation. The study of the gas generation and the vacuum level in the beam chamber is covered in another publication [5], owing to the otherwise unaffordable increase of length and complexity of the resulting paper
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