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| Superconducting Super Collider proposal | |
|---|---|
| Name | Superconducting Super Collider proposal |
| Location | United States |
| Status | cancelled |
| Proposed by | Robert R. Wilson, John J. Simpson |
| Planned start | 1988 |
| Planned completion | 1996 |
| Circumference | 87.1 km (planned) |
| Energy | 20 TeV per beam (planned) |
| Stakeholders | Department of Energy (United States), Texas state agencies, Fermi National Accelerator Laboratory, Lawrence Berkeley National Laboratory |
Superconducting Super Collider proposal was a United States–based initiative in the 1980s and early 1990s to build a high-energy particle accelerator ring intended to probe fundamental questions in particle physics, electroweak interaction, and quantum chromodynamics. The project attracted attention from figures such as George H. W. Bush, Ronald Reagan, William J. Clinton, and administrators of agencies like the National Science Foundation and the United States Congress, but was terminated before construction finished due to escalating costs, political opposition, and competing priorities. The cancellation reshaped planning for subsequent facilities including Large Hadron Collider, Fermilab, and international collaborations such as CERN and KEK.
Proponents framed the proposal as the successor to facilities at Fermilab and Brookhaven National Laboratory, intended to surpass energies achieved by the Tevatron and explore phenomena predicted by the Standard Model and extensions like supersymmetry and Grand Unified Theory. Advocates cited discoveries at institutions including Stanford Linear Accelerator Center, Argonne National Laboratory, and Lawrence Livermore National Laboratory to argue for strategic investment in a machine comparable to concepts from Enrico Fermi-era accelerator development and the legacy of Robert R. Wilson. Debates invoked reports from panels convened by National Research Council (United States), High Energy Physics Advisory Panel, and commissions chaired by figures such as John H. Gibbons and Edward Teller.
The planned collider featured a circular ring with an 87.1 km circumference using superconducting magnets developed from technologies explored at Brookhaven National Laboratory and Fermilab; superconducting magnet R&D referenced work at Los Alamos National Laboratory and Lawrence Berkeley National Laboratory. Design documents from engineers and physicists including Maurice Goldhaber and S. S. Schweber detailed twin-ring, counter-rotating proton beams targeted at 20 TeV per beam to probe mass scales relevant to searches for the Higgs boson, heavy gauge bosons like W and Z bosons, and hypothetical particles in supersymmetric models. Detector concepts drew on experience with experiments such as UA1, UA2, CDF, and D0, and anticipated large-scale collaborations modeled after ATLAS (particle detector) and CMS. Accelerator systems planned integration of cryogenics, RF cavities, vacuum systems, and infrastructure similar to those at DESY and TRIUMF.
Cost projections evolved in reports from the Department of Energy (United States), with input from state governments including Texas and agencies like the Texas National Research Laboratory Commission. Initial budgets compared to expenditures at CERN and the Japan Proton Accelerator Research Complex; estimates ranged widely and were scrutinized by committees including the House Committee on Appropriations and the Senate Committee on Energy and Natural Resources. Site bids came from regions such as Waxahachie, Texas, Dallas County, and proposals involving land near Dallas–Fort Worth metroplex with local stakeholders like Texas A&M University and University of Texas at Dallas offering partnerships. Economic impact studies referenced precedents from Oak Ridge National Laboratory and Los Alamos National Laboratory regarding regional development, workforce, and procurement.
Political contention involved elected officials including Sam Houston-era regional leaders, House Speaker Tom Foley, and senators who negotiated appropriations and oversight; hearings featured testimony from scientists like Richard Feynman-era colleagues and administrators from Fermilab such as Robert R. Wilson-inspired leadership. Critics cited comparisons to other federal projects like Interstate Highway System expansions and defense programs overseen during administrations of Dwight D. Eisenhower and Lyndon B. Johnson to argue fiscal restraint. The project was ultimately defunded in 1993 after votes in the United States Congress reflected competing priorities advocated by figures such as Newt Gingrich and Albert Gore Jr., prompting cancellation announcements involving the Department of Energy (United States) and statements by Bill Clinton administration officials.
Although unbuilt, the proposal influenced accelerator science at institutions including CERN, Fermilab, SLAC National Accelerator Laboratory, and DESY, accelerating R&D in superconducting magnet technology pursued by companies like General Electric and laboratories such as Brookhaven National Laboratory. The conceptual work contributed to design principles used in the Large Hadron Collider, International Linear Collider, and upgrades at Fermilab leading to projects like NuMI and NOvA (experiment). The cancellation redirected talent and funding to international collaborations involving physicists who moved to experiments such as ATLAS (particle detector), CMS, LHCb, ALICE (A Large Ion Collider Experiment), and neutrino programs at Super-Kamiokande and Kamioka Observatory.
After cancellation, stakeholders pursued alternatives including upgrades at Fermilab (notably the Main Injector (Fermilab)), advocacy for the International Linear Collider and the Compact Linear Collider at CERN, and concepts like the Very Large Hadron Collider and proposals from China for facilities such as the Circular Electron Positron Collider. Funding and collaboration models evolved toward multinational frameworks exemplified by CERN and joint ventures such as the Global Design Effort and partnerships between KEK and European laboratories. Regional initiatives referenced by proponents included proposals involving Texas Tech University and consortia of national laboratories like Oak Ridge National Laboratory and Argonne National Laboratory.
Category:Particle physics projects