Particle Accelerator Conference (PAC)

Particle Accelerator Conference (PAC)
Name	Particle Accelerator Conference
Abbreviation	PAC
Discipline	Physics
Frequency	Biennial / Annual (varied)
First	1963
Country	United States (primarily)
Organized	Institute of Electrical and Electronics Engineers NPSS and American Physical Society DPB (historically)

Particle Accelerator Conference (PAC) is a major international meeting for the communities centered on particle accelerator design, beam physics, and accelerator technologies, bringing together researchers, engineers, and vendors. The conference serves as a focal point linking work presented at venues such as the International Conference on High Energy Physics, European Particle Accelerator Conference, International Linear Collider workshops, CERN collaborations, and national laboratories including Fermilab, Brookhaven National Laboratory, and SLAC National Accelerator Laboratory. PAC historically shaped developments in accelerator science through proceedings, technical sessions, and industry exhibits associated with organizations like the Institute of Physics and the American Institute of Physics.

History

The event traces origins to early accelerator meetings in the 1950s and institutional consolidation by groups including Brookhaven National Laboratory, Argonne National Laboratory, Lawrence Berkeley National Laboratory, Stanford Linear Accelerator Center, and Los Alamos National Laboratory, leading to the first conferences in the 1960s that echoed priorities of High Energy Physics programs at Fermilab and CERN. Over decades PAC reflected shifts from cyclotron and synchrotron development tied to projects like the Proton Synchrotron and the Tevatron to modern superconducting technology linked to International Linear Collider proposals and Large Hadron Collider upgrades. Key personalities and institutions—such as researchers from Massachusetts Institute of Technology, University of California, Berkeley, University of Oxford, Imperial College London, and national agencies like the Department of Energy and European Commission—influenced agendas. The conference record documents milestones in radio-frequency cavity innovation, beam dynamics theory, magnet technology advances, and accelerator-driven applications interfacing with synchrotron light sources, neutron spallation sources, and medical facilities exemplified by partnerships with hospitals and companies like Varian Medical Systems.

Organization and Governance

PAC organization has historically involved professional societies including the Institute of Electrical and Electronics Engineers, the American Physical Society, and the American Institute of Physics, with program committees drawn from national laboratories such as CERN, Fermilab, DESY, KEK, and universities like Stanford University and University of Chicago. Governance structures typically include steering committees, program chairs, and local organizing committees affiliated with host institutions such as Argonne National Laboratory or municipal partners including City of Chicago or City of San Francisco when hosted there. Proceedings management and publishing have engaged publishers and archives associated with IEEE Xplore, American Institute of Physics publishing channels, and indexing services referenced by libraries like the Library of Congress and databases used by INSPIRE-HEP and arXiv. Financial and sponsorship relationships have connected with industrial partners such as General Electric and Siemens and funding agencies like the National Science Foundation and European Research Council.

Conference Program and Topics

Programs at PAC cover sessions on radio-frequency cavities, superconducting magnets, beam instrumentation, vacuum technology, and particle sources alongside theory topics in nonlinear dynamics, collective effects, space-charge, and wakefields. Plenary and parallel sessions routinely feature contributions related to facilities including Spallation Neutron Source, Advanced Photon Source, European XFEL, and projects such as Compact Linear Collider and Future Circular Collider. Workshops and tutorials often reference standards and tools developed at institutions like CERN and DESY, and include demonstrations of simulation codes originating from collaborations at SLAC National Accelerator Laboratory, Los Alamos National Laboratory, and university groups at Massachusetts Institute of Technology and École Polytechnique. Special sessions address applications in medical physics institutions and industrial partnerships exemplified by Siemens Healthineers and technology transfer discussions involving National Institutes of Health collaborations.

Notable Proceedings and Impact

PAC proceedings have been the venue for seminal reports on synchrotron radiation optimization, superconducting radio-frequency (SRF) breakthroughs, and magnet design milestones that informed projects like the Large Hadron Collider upgrade and the International Linear Collider R&D roadmap. Papers presented at PAC influenced policy and funding decisions by agencies such as the Department of Energy, shaped design choices at Fermilab and Brookhaven National Laboratory for programs like the Relativistic Heavy Ion Collider upgrades, and underpinned technology transfer to industry partners including Thales and Hitachi. The archive of proceedings, cited in repositories like INSPIRE-HEP and repositories maintained by American Institute of Physics, document cross-disciplinary impacts on synchrotron light source development, accelerator-driven subcritical reactor concepts debated with groups at Oak Ridge National Laboratory, and medical accelerator adoption by hospitals and vendors.

Attendance and Participant Community

Attendees encompass scientists from universities such as University of Oxford, University of Tokyo, Tsinghua University, University of California, Berkeley; engineers from national labs including CERN, Fermilab, DESY, KEK; and industry representatives from firms like General Electric, Siemens, Thales and Varian Medical Systems. The community includes early-career researchers supported by programs connected to the American Physical Society and senior experts who have affiliations with awards and organizations such as the Enrico Fermi Award recipients, fellows of the American Physical Society, and members of national academies like the National Academy of Sciences. Vendor exhibits and poster sessions promote interaction among project teams from European XFEL, Spallation Neutron Source, and accelerator projects at universities and national facilities.

Locations and Frequency

PAC has most often been held in North American venues with past sites including cities such as Chicago, San Francisco, Vancouver, Dallas, and New York City, while international technical communities at CERN, DESY, KEK, and TRIUMF maintain parallel regional conferences like the European Particle Accelerator Conference and the International Particle Accelerator Conference. The conference cadence has varied between annual and biennial schedules depending on coordination with societies like the Institute of Electrical and Electronics Engineers and the American Physical Society and alignment with major project milestones at Fermilab and Brookhaven National Laboratory.

Category:Physics conferences