CEPC Technical Design Report -- Accelerator (v2)

Abstract

The Circular Electron Positron Collider (CEPC) is a large scientific project initiated and hosted by China, fostered through extensive collaboration with international partners. The complex comprises four accelerators: a 30 GeV Linac, a 1.1 GeV Damping Ring, a Booster capable of achieving energies up to 180 GeV, and a Collider operating at varying energy modes (Z, W, H, and ttbar). The Linac and Damping Ring are situated on the surface, while the Booster and Collider are housed in a 100 km circumference underground tunnel, strategically accommodating future expansion with provisions for a Super Proton Proton Collider (SPPC). The CEPC primarily serves as a Higgs factory. In its baseline design with synchrotron radiation (SR) power of 30 MW per beam, it can achieve a luminosity of 5e34 /cm^2/s^1, resulting in an integrated luminosity of 13 /ab for two interaction points over a decade, producing 2.6 million Higgs bosons. Increasing the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons, facilitating precise measurements of Higgs coupling at sub-percent levels, exceeding the precision expected from the HL-LHC by an order of magnitude. This Technical Design Report (TDR) follows the Preliminary Conceptual Design Report (Pre-CDR, 2015) and the Conceptual Design Report (CDR, 2018), comprehensively detailing the machine's layout and performance, physical design and analysis, technical systems design, R&D and prototyping efforts, and associated civil engineering aspects. Additionally, it includes a cost estimate and a preliminary construction timeline, establishing a framework for forthcoming engineering design phase and site selection procedures. Construction is anticipated to begin around 2027-2028, pending government approval, with an estimated duration of 8 years. The commencement of experiments could potentially initiate in the mid-2030s.

1106 pages

Cited by in corpus (50)

• Quantum Information meets High-Energy Physics: Input to the update of the European Strategy for Particle Physics
• New Physics Search at the CEPC: a General Perspective
• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• Toponium: the smallest bound state and simplest hadron in quantum mechanics
• EW corrections and Heavy Boson Radiation at a high-energy muon collider
• Single-inclusive hadron production in electron-positron annihilation at next-to-next-to-next-to-leading order in QCD
• Light Axion-Like Particles at Future Lepton Colliders
• Quantum-Annealing-Inspired Algorithms for Track Reconstruction at High-Energy Colliders
• Testing Lepton Flavor Universality at the Electron-Ion Collider
• Probing CP-Violating Neutral Triple Gauge Couplings at Electron-Positron Colliders
• Precision timing detectors
• One-to-one correspondence reconstruction at the electron-positron Higgs factory
• Testing a 95 GeV Scalar at the CEPC with Machine Learning
• New Particles at the Z-Pole: Tera-Z factories as discovery and precision machines
• The next frontiers for magnetic monopole searches
• Adiabatic sheath model for beam-driven blowout plasma channels
• Revisiting $B_s\to PP$ and $PV$ Decays with Contributions from ${\varphi }_{B2}$ with perturbativen QCD approach
• Quantum-annealing-inspired algorithms for multijet clustering
• Particle-level transformers for 95 GeV Higgs boson searches at future $e^{+}{e}^{-}$ Higgs factories
• Probing top-quark electroweak couplings indirectly at the Electron-Ion Collider
• Z and Higgs Factory Implications of Two Higgs Doublets with First-Order Phase Transitions
• Optimal sensitivity of anomalous charged triple gauge couplings through $W$ boson helicity at the $e^{+}{e}^{-}$ colliders
• Searching for the toponium ${\eta }_t$ with the ${\eta }_t$ $\to$ $W^{+}{W}^{-}$ decay
• Simulation of the process $e^{+}{e}^{-}\to W^{+}{W}^{-}$ with the heavy right-handed neutrino exchange at 1 TeV future lepton colliders
• Test of a partly instrumented highly compact and granular electromagnetic calorimeter in an electron beam of 1 to 6 GeV
• Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders
• Search for new physics effects in $\nu \bar{\nu }\gamma$ production at a Tera-Z factory
• Monte Carlo Event Generators
• Optimal estimation of Higgs-Gauge Boson couplings at the future $e^{+}{e}^{-}$ colliders
• Determination of the first-generation quark couplings at the Z-pole
• Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee
• $CP$-violating effects of the neutral triple gauge couplings in $Z(\ell \ell )\gamma$ production at the LHC
• The nonfactorizable QED correction to the ${\overline{B}}_s$ $\to$ $D_s^{(\ast )}\ell {\bar{\nu }}_{\ell }$ decays
• A Comprehensive Monte Carlo Simulation Tool on Electron Transport in Noble Gases and Liquids
• Lepton Flavor Violation at FCC-ee and CEPC
• Photon reconstruction using the Hough transform in imaging calorimeters
• Prospect for measurement of $CP$-violating observables in $B_s^0\to D_s^{\mp }{K}^{\pm }$ decays at a future $Z$ factory
• The feasibility of single $\Lambda$ production via ${\ell }^{-}$ $+$ $p$ $\to$ $\Lambda$ $+$ ${\nu }_{\ell }$ at $e^{+}{e}^{-}$ colliders
• TARDIS Lab: infrastructure for characterization and assembly of highly granular silicon calorimeter modules for LUXE and future Higgs Factories
• Chasing the two-Higgs-doublet model via electroweak corrections at $e^{+}{e}^{-}$ colliders
• NNLO QCD corrections to $\gamma \gamma \to Q\bar{Q}$ from Local Unitarity combined with Coulomb resummation and NLO EW effects
• Probing the Axion-Photon-Dark Photon Interaction at Future $e^{+}{e}^{-}$ Colliders
• Configuration and Benchmarking of ${\mathrm{e}}^{+}{\mathrm{e}}^{-}$ Processes with K4GeneratorsConfig
• Challenges for Monte Carlo generators
• Primordial Black Hole Formation and Multimessenger Signals in a Complex Singlet Extension of the Standard Model
• Deep-learning jet flavor tagging for precision hadronic Higgs measurements at future $e^{+}{e}^{-}$ Higgs factories
• A $B-$anomaly motivated $Z^{\prime }$ boson at the energy and precision frontiers
• Positive definiteness constraints of effective scalar potential in Georgi-Machacek Model
• Probing Neutral Triple Gauge Couplings via $ZZ$ Production at $e^{+}{e}^{-}$ Colliders with Machine Learning
• EVAluation of the Equivalent Vector Boson Approximation at highest energy colliders