APS Organized by the Division of Particles and Fields
and the Division of Physics of Beams
of the American Physical Society


New Links
The Purpose of Snowmass 2001

The high-energy physics community in the United States has gathered at intervals since 1982 to examine and articulate the current state of the discipline and to chart its future. This year, the APS Divisions of Particles and Fields and of the Physics of Beams are organizing a Summer Study on the Future of Particle Physics that will consider the field in all its richness and diversity. Snowmass 2001 will consider experiments at the highest energies, experiments of exceptional sensitivity, and experiments that explore very high scales through virtual effects; accelerators to address a broad range of scientific opportunities; accelerator research to provide information for knowledgeable decisions about future projects, and accelerator research and technology development for the long term; theory that develops hand-in-hand with experiment and visionary theory that hasn't yet engaged experimental particle physics directly. The workshop will examine accelerator experiments as well as astroparticle, particle astrophysics, and cosmological studies that use natural sources. It will examine the interplay between particle physics and new technologies, and will explore the interactions between particle physics and related fields.

 Snowmass 2001 will be a forum for the critical examination of future projects, and will provide crucial community input to the long-range planning activities undertaken by the science funding agencies and the High Energy Physics Advisory Panel. It will be an ideal place for a broad community of scientists to examine initiatives for new accelerators and new detectors that are being developed throughout the world.

 Every member of the high-energy physics community is welcome. We look forward to extensive international participation.

For a more detailed description, see the October 31, 2000, Snowmass 2001 Report to the High Energy Physics Advisory Panel.


View the Snowmass 2001 poster in low (39 kB), medium (117 kB), or high (623 kB) resolution.

Organizing Committee

The program for Snowmass 2001 is being developed by a broadly representative Organizing Committee co-chaired by Ron Davidson (DPB/PPPL) and Chris Quigg (DPF/Fermilab). Any member of the Organizing Committee will be glad to receive your suggestions.

During the Snowmass conference, Alex Chao (SLAC) will be acting co-chair for DPB.

Snowmass Working Groups

Working groups at Snowmass 2001 will explore all the major issues in particle physics, accelerator physics, and related technologies. Lists of working groups, convenors, and charges are available here. You can submit working group related information to liubo@fnal.gov.

NPSS Technology Emphasis

The IEEE Nuclear and Plasma Sciences Society is working in technical cooperation with DPB and DPF on Snowmass 2001. The NPSS Technology Emphasis will focus on technologies that impact the future of particle physics research. A committee chaired by Bruce Brown of Fermilab has announced a rich program of short courses and lunchtime lectures on technological topics of interest to Snowmass participants.


A provisional agenda for the Snowmass 2001 workshop is available. It is subject to revision, but provides a tentative guide to the events that will make up the summer study.

Background Information

We will maintain an online archive of information related to program planning and future projects. The February 1998 (Gilman) HEPAP Subpanel Report on Planning for the Future of U.S. High-Energy Physics, the October 2000 HEPAP White Paper on Planning for U.S. High-Energy Physics, and the 1998 (Winstein) National Research Council Report, Elementary Particle Physics: Revealing the Secrets of Energy and Matter, are available now, as is the Charge to the 2001 (Bagger-Barish) HEPAP Subpanel. And here is the Report of the Particle And Nuclear Astrophysics and Gravitational Committee (PANAGIC) to IUPAP.

Physics in a New Era, the summary volume (2001) of the Decade Survey on Physics, is now available online in PDF format. Connecting Quarks with the Cosmos: Eleven Science Questions for the New Century, the report of the NAS/NRC Committee on Physics of the Universe, is available online in PDF format. Underground Science is available online at PDF format.

Outreach and Education

We plan an energetic and diverse program of outreach and education to share the excitement of our science with the population of Aspen, Snowmass, and surrounding communities, and to display to all of us the many approaches to outreach that our colleagues have put into practice. Elizabeth Simmons (Boston University) chairs the Snowmass 2001 Outreach Coordinating Committee. Snowmass Village has designated July 7 and 8 as Science Weekend.

Young Scientists at Snowmass

We especially encourage advanced students and other young scientists to contribute to Snowmass 2001. Modest-cost housing will be available for fifty graduate students, the DPB has awarded the Melvyn Month Travel Fellowship, and the DPF has awarded DPF Snowmass Fellowships for students and postdocs. Registration is free to students. A generous grant from the National Science Foundation underwrites student and postdoc participation.

Related Activities and Workshops

In support of Snowmass 2001, the Aspen Center for Physics is organizing a workshop on Electroweak Symmetry Breaking and TeV Scale Physics after LEP, from July 8 to August 5. We welcome participants in the ACP program to enrich the Snowmass 2001 community.

 The Les Houches Workshop, Physics at TeV Colliders II, will take place from 21 May to 1 June.

Practical Details

Computing facilities information is available here.

Information about workshop registration, transportation, and housing is now available. General information about the Snowmass / Aspen area is available online. Childcare information for the 2000 summer season is available at this ACP link. For additional day camps and children's activities, see this Aspen Link.  If your question cannot wait, please contact Cynthia Sazama of the Fermilab Conference Office.

A condo sharing message board for Snowmass participants is available here.


Snowmass 2001 is supported by the U.S. Department of Energy, the National Science Foundation, and NASA; by the American Physical Society's Division of Particles and Fields and Division of Physics of Beams; and by the IEEE Nuclear and Plasma Sciences Society. Additional funding is provided by Argonne National Laboratory, Brookhaven National Laboratory, the Cornell University Laboratory for Nuclear Studies, Fermi National Accelerator Laboratory, Jefferson Laboratory, Lawrence Berkeley National Laboratory, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, Oak Ridge National Laboratory/Spallation Neutron Source, and the Stanford Linear Accelerator Center; and by Universities Research Association and the Illinois State Board of
Higher Education.

 If you or your organization would like to support the work of Snowmass 2001, please contact one of the Organizing Committee co-chairs, Ron Davidson (DPB) or Chris Quigg (DPF).