CEPC Conceptual Design Report: Volume 1 - Accelerator

Abstract

The Circular Electron Positron Collider (CEPC) is a large international scientific project initiated and hosted by China. It is located in a 100-km circumference underground tunnel. The accelerator complex consists of a linear accelerator (Linac), a damping ring (DR), the Booster, the Collider and several transport lines. In the tunnel, space is reserved for a future pp collider, SPPC. The CEPC center-of-mass energy is 240 GeV, and at that collision energy will serve as a Higgs factory. The design also allows operation at 91 GeV for a Z factory and at 160 GeV for a W factory. The heart of the CEPC is a double-ring collider. It has two interaction points where are located large detectors. The Booster is in the same tunnel above the Collider. It is a synchrotron with a 10 GeV injection energy and extraction energy equal to the beam collision energy. The repetition cycle is 10 seconds. Top-up injection will be used to maintain constant luminosity. The 10 GeV Linac, injector to the Booster, built at ground level, accelerates both electrons and positrons. A 1.1 GeV damping ring reduces the positron emittance. Transport lines made of permanent magnets connect the Linac to the Booster. In addition to particle physics, the Collider can operate simultaneously as a powerful synchrotron radiation (SR) light source. It will extend the usable SR spectrum into an unprecedented energy and brightness range. Two gamma-ray beamlines are included in the design. Prior to the construction will be a five-year R&D period (2018-2022). Construction is expected to start in ~2022 and be completed in ~2030. This report is a summary of work accomplished during the past several years by hundreds of scientists and engineers at home and abroad. The current volume, Volume I, is on the accelerators. A separate volume, Volume II, will be on physics and the detectors.

arXiv comment510 pages

Cited by in corpus (33)

• Precision Higgs Physics at CEPC
• Physics with Far Detectors at Future Lepton Colliders
• Probing the minimal $U(1{)}_X$ model at future electron-positron colliders via the fermion pair-production channel
• Probing the strange Higgs coupling at lepton colliders using light-jet flavor tagging
• Long-lived light neutralinos at future $Z-$factories
• Using a nested anomaly detection machine learning algorithm to study the neutral triple gauge couplings at an \texorpdfstring{$e^{+}{e}^{-}$}{e+e-} collider
• Final taus and initial state polarization signatures from effective interactions of Majorana neutrinos at future $e^{+}{e}^{-}$ colliders
• Two-Loop QCD Corrections to the Higgs plus three-parton amplitudes with Top Mass Correction
• Prospects for $B_c^{+}$ and $B^{+}\to {\tau }^{+}{\nu }_{\tau }$ at FCC-ee
• Timing Optimisation and Analysis in the Design of 3D silicon sensors: the TCoDe Simulator
• High-energy colliders as a probe of neutrino properties
• Perspectives and Outlook from HEP Window on the Universe
• Scintillator Tile Batch Test of CEPC AHCAL
• Muon pair production via $e^{+}{e}^{-}$ annihilation in the presence of a circularly polarized laser field
• High-dimensional Anomaly Detection with Radiative Return in $e^{+}{e}^{-}$ Collisions
• Lepton identification performance in Jets at a future electron positron Higgs Z factory
• Photoproduction of the $B_c$ meson at the future $e^{+}{e}^{-}$ colliders
• Probe Charm Yukawa at the future $e^{-}p$ and $e^{+}{e}^{-}$ colliders
• Quantum-Annealing-Inspired Algorithms for Track Reconstruction at High-Energy Colliders
• The DAQ and control system for JadePix3
• Optimization of Design Parameters for SPPC Longitudinal Dynamics
• A very high energy hadron collider on the Moon
• Sub-10 ps time tagging of electromagnetic showers with scintillating glasses and SiPMs
• Search for invisible dark photon in $\gamma e$ scattering at future lepton colliders
• Pair-production of the charged IDM scalars at high energy CLIC
• Future colliders - Linear and circular
• Lepton Flavor Violation at FCC-ee and CEPC
• Optimization of tracker configuration for the CEPC
• Particle Flow with a Hybrid Segmented Crystal and Fiber Dual-Readout Calorimeter
• Higgs Production in Association with a Dark-Z at Future Electron Positron Colliders
• Future accelerator projects: new physics at the energy frontier
• Status of $e^{+}{e}^{-}$ Higgs Factory Projects
• Characterization of a CMOS pixel sensor for charged particle tracking