Linear Accelerator 2

Linear Accelerator 2
Name	Linear Accelerator 2

Linear Accelerator 2

Introduction

Linear Accelerator 2 is a particle accelerator facility developed to extend capabilities in high-energy physics, medical therapy, and materials research, involving collaborations among CERN, Fermilab, Stanford Linear Accelerator Center, Brookhaven National Laboratory, and Lawrence Berkeley National Laboratory. The project drew funding and technical support from agencies including the National Aeronautics and Space Administration, Department of Energy (United States), European Commission, Wellcome Trust, and Howard Hughes Medical Institute, and engaged academic partners such as Massachusetts Institute of Technology, University of Cambridge, University of Oxford, Imperial College London, and California Institute of Technology. Designs referenced developments from predecessors like the Linac Coherent Light Source, Advanced Photon Source, European XFEL, KEK, and TRIUMF while aligning with standards influenced by International Atomic Energy Agency guidelines and recommendations from American Physical Society committees.

Design and Technical Specifications

The accelerator's architecture integrates radiofrequency cavities, superconducting magnets, and cryogenic systems inspired by technologies at DESY, SLAC National Accelerator Laboratory, Argonne National Laboratory, Rutherford Appleton Laboratory, and Paul Scherrer Institute, using control systems interoperable with EPICS deployments in major laboratories. The beamline supports electron and proton modes using accelerating gradients comparable to those developed at Tesla Technology Collaboration, with cavities patterned on work from Heinrich Hertz, Ernest Lawrence, Ernest Orlando Lawrence Memorial, and engineering contributions linked to John Cockcroft and Ernest Walton innovations; power systems interface with grids modeled after installations at National Grid (Great Britain) and PJM Interconnection. Vacuum, diagnostics, and instrumentation incorporate sensors and detectors referencing designs by CERN NA62, ATLAS, CMS, LHCb, and ALICE collaborations, and the facility's timing and synchronization use standards from Global Positioning System, European Space Agency, National Institute of Standards and Technology, and high-precision clocks akin to those at NIST-F2.

Operational History

Commissioning phases mirrored project schedules from Large Hadron Collider upgrades and drew technical reviews similar to processes used by ITER, Square Kilometre Array, James Webb Space Telescope, and International Thermonuclear Experimental Reactor oversight panels, with milestones celebrated in meetings attended by representatives from Royal Society, National Academy of Sciences, Max Planck Society, CNRS, and Deutsches Elektronen-Synchrotron. Early operations included beam tests that referenced performance benchmarks established at CERN SPS, Fermilab Tevatron, and LEP and were documented at conferences such as International Conference on High Energy Physics, Neutron Scattering Conference, and American Physical Society March Meeting, alongside publications in journals like Physical Review Letters, Nature, Science, Journal of Applied Physics, and Nuclear Instruments and Methods in Physics Research. Maintenance cycles and incident responses were coordinated with regulatory bodies including Health and Safety Executive (United Kingdom), Nuclear Regulatory Commission, Environment Agency (England and Wales), and Agence nationale de sécurité sanitaire frameworks.

Applications and Uses

Linear Accelerator 2 supports research programs in particle physics, accelerator-driven transmutation, isotope production, and photon science, facilitating experiments connected to collaborations such as ATLAS, CMS, ITER, XFEL, and Human Genome Project-era biomedical initiatives; it also underpins applied projects with Mayo Clinic, Johns Hopkins Hospital, Memorial Sloan Kettering Cancer Center, Karolinska Institutet, and Royal Marsden Hospital for advanced radiotherapy and isotope production. Industrial partnerships with Siemens, General Electric, Hitachi, Boeing, and Rolls-Royce enabled materials testing, non-destructive evaluation, and semiconductor research linked to programs at ARM Holdings and Intel. Educational and outreach activities engaged students from Harvard University, Princeton University, Yale University, University of Tokyo, and Peking University through internships and joint programs.

Safety and Radiation Protection

Safety systems follow guidance from the International Commission on Radiological Protection, World Health Organization, Occupational Safety and Health Administration, European Commission Directorate-General for Energy, and national regulators such as the Food and Drug Administration and Public Health England, integrating interlocks, shielding, and monitoring modeled after designs used at CERN, Fermilab, DESY, Brookhaven National Laboratory, and Argonne National Laboratory. Emergency planning referenced standards from FEMA, Civil Defence, Red Cross, and local authorities, while training programs involved curricula analogous to those at Royal College of Radiologists and certification routes recognized by Institute of Physics and American Board of Radiology.

Upgrades and Future Developments

Planned upgrades align with roadmaps similar to the High-Luminosity Large Hadron Collider program, proposals considered by panels like those of the European Strategy for Particle Physics and the Particle Physics Project Prioritization Panel, and technology transfer initiatives with institutions including MIT Lincoln Laboratory, Lawrence Livermore National Laboratory, Hitachi, and Toshiba. Research into higher-gradient cavities, novel superconductors such as those investigated at Louis Pasteur University and Max Planck Institute for Solid State Research, and compact accelerator concepts parallel efforts at CERN, SLAC, DESY, and Rutherford Appleton Laboratory and may support future collaborations with space agencies like NASA and European Space Agency for accelerator-based applications in space science.

Category:Particle accelerators