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Frequently Asked Questions (FAQs): NSF Experimental Elementary Particle Physics (PD 12 1221)

What is the NSF funding opportunity "Experimental Elementary Particle Physics" (PD 12 1221)?

This NSF opportunity (Funding Opportunity Number PD 12 1221) supported accelerator-based experimental elementary particle physics research aimed at discovering the most fundamental properties of matter, energy, space, and time. It sat within NSF's Division of Physics and focused on experimental work carried out at particle accelerators and associated facilities and collaborations.

What scientific goals does this program emphasize?

The program emphasized uncovering fundamental physics, including studies related to the Higgs boson and the origin of particle mass, searches for new particles or interactions that could explain dark matter, and potential signatures of physics beyond current models (such as extra dimensions of spacetime).

How does the solicitation frame modern particle physics research areas?

The solicitation described three overlapping research thrusts:

• Energy Frontier: probing new particles and forces at the highest energies.
• Intensity Frontier: using extremely intense particle beams to study rare processes and subtle effects.
• Cosmic Frontier: connecting particle physics methods to questions about the universe, including dark matter and dark energy.

Does this program focus only on collider physics?

No. While collider experiments were a major focus, the solicitation also highlighted a new generation of accelerator-based neutrino experiments as a major activity area, along with enabling technologies such as accelerator R&D, advanced detector development, and distributed computing.

What is the role of the Elementary Particle Physics (EPP) program within NSF?

The solicitation described EPP as the NSF home for particle physics at accelerators. It complements NSF's Theory program and NSF's Particle Astrophysics program (which supports non-accelerator experiments).

What kinds of experiments and facilities were highlighted?

The opportunity highlighted major participation in experiments at:

• Fermilab (Batavia, Illinois)
• The Large Hadron Collider (LHC) at CERN (Geneva, Switzerland)

Why are modern collider detectors described as technically demanding?

The solicitation emphasized that modern collider detectors must handle extremely high event rates (up to hundreds of millions of collisions per second) and sift these data to identify very rare signals that may occur only a few times per day. This creates exceptional technical demands in detectors, triggering, data acquisition, and computing.

What examples of discovery-driven topics were mentioned?

Examples called out in the description included understanding the Higgs boson and its role in particle mass, searching for new particles or interactions relevant to dark matter, and looking for signatures that could indicate extra dimensions or other new physics beyond current models.

What neutrino research activities were emphasized?

The solicitation highlighted accelerator-generated neutrino beam experiments in the U.S., Europe, and Japan. These experiments send neutrinos over long distances (sometimes hundreds of miles through the Earth) to underground detectors to measure changes in neutrino flavor composition over the flight path, enabling controlled laboratory studies of neutrino oscillations and other neutrino properties.

How does the solicitation connect particle physics to cosmology?

A key theme was the growing link between cosmology and quantum physics, noting that understanding the early universe increasingly relies on tools and experiments developed in particle physics. This aligns with the solicitation's discussion of the Cosmic Frontier and questions such as dark matter and dark energy.

Does the program support technology development in addition to scientific analysis?

Yes. The program description explicitly included enabling technologies and infrastructure needed for large-scale experimental particle physics, including accelerator physics R&D, advanced detector technologies, and distributed computing methods used by large international collaborations.

What computing or data infrastructure topics were mentioned?

The solicitation referenced distributed computing approaches, including grid computing development and related tools that allow massive datasets to be processed and shared across institutions and countries.

What broader impacts or workforce elements were mentioned?

The description emphasized broader impacts including training students, drawing global talent, and driving advances in technology and computation. It also highlighted education and broader participation components, including engagement with K-12 educators who participate in experiments alongside university scientists, staff, and students to help bring cutting-edge science into classrooms.

What type of grant opportunity was this from an administrative standpoint?

Administratively, it was described as a discretionary NSF grant opportunity in the Science and Technology and other Research and Development category, under CFDA 47.049 (Mathematical and Physical Sciences).

How many awards were anticipated and what was the estimated total funding level?

The opportunity anticipated around 20 awards, with an estimated total funding level of $50,000,000.

What was the minimum award amount (award floor)?

The solicitation listed an award floor of $300,000.

Was cost sharing required?

No. Cost sharing was not required.

Who was eligible to apply?

Eligibility was listed as unrestricted (open to any type of entity), subject to any clarifications in the full announcement.

What was the proposal deadline or target date mentioned?

The original closing date was October 31, 2012. The solicitation also stated an annual full proposal target date of the last Wednesday in October.

Is this funding opportunity still open?

No. The opportunity is archived. It was later replaced by PD 13 1221, indicating the program continued under a subsequent solicitation.

What does it mean that PD 12 1221 was replaced by PD 13 1221?

Based on the solicitation text, replacement indicates NSF continued the Experimental Elementary Particle Physics program under a newer solicitation number (PD 13 1221) after PD 12 1221 was archived.