The International Linear Collider Machine Staging Report 2017
Lyn Evans, Shinichiro Michizono
TL;DR
This report explores staged development options for the International Linear Collider, focusing on starting at 250 GeV to optimize costs for Higgs boson studies, with potential upgrades to higher energies.
Contribution
It presents a detailed plan for a 250 GeV Higgs factory as a cost-effective initial stage of the ILC, considering future upgrade possibilities.
Findings
Cost reduction potential by starting at 250 GeV
Design options for a Higgs factory
Future upgrade pathways to higher energies
Abstract
The Technical Design Report (TDR) of the ILC mainly concentrates on a baseline machine of 500 GeV centre-of-mass with detailed cost and manpower estimates consistent with this option. However, the discovery of a Higgs Boson with a mass of 125 GeV opens up the possibility of reducing cost by starting at a centre-of-mass energy of 250 GeV with the possibility of future upgrades to 500 GeV or even 1 TeV should the physics case for such an upgrade be compelling. The rest of this paper outlines the options for the design of a 250 GeV "Higgs factory".
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