Title 42 › Chapter CHAPTER 161— - DEPARTMENT OF ENERGY RESEARCH AND INNOVATION › Subchapter SUBCHAPTER III— - DEPARTMENT OF ENERGY OFFICE OF SCIENCE POLICY › § 18643
The Director must run a U.S. research program in particle physics that follows the priorities of the 2014 Particle Physics Project Prioritization Panel (P5) report. The work must use high-energy accelerators and advanced detectors to study particles, forces, and the nature of space and time. The Director must try to give U.S. researchers access to the best accelerator facilities in the world, including the Large Hadron Collider, keep U.S. participation there, and grow international partnerships—especially for the Long-Baseline Neutrino Facility (LBNF) and the Deep Underground Neutrino Experiment (DUNE). The program must include studies of rare particle decays, the neutrino, dark matter, and dark energy. The Director should do research with NASA, NSF, and foreign partners when useful, upgrade U.S. accelerators and detectors, run related R&D, support underground science, fund competitive grants, and report on U.S. mines that could become underground labs. The Director and the Secretary must support building key projects recommended by P5, including an international LBNF/DUNE, the Proton Improvement Plan II (PIP‑II), Second Generation Dark Matter experiments, the Legacy Survey of Space and Time camera, Large Hadron Collider upgrades, and the Cosmic Microwave Background Stage 4 (CMB‑S4) project. Minimum requirements and deadlines are set: LBNF must have a wideband neutrino beam of 1.2 megawatts upgradable to 2.4 megawatts, three caverns for a 70 kiloton detector mass, and cryogenic systems, with full operations by December 31, 2031. PIP‑II must include an 800 megaelectron volt superconducting linear accelerator, start with 1.2 megawatts upgradable to 2.4 megawatts, flexible multiuser beam delivery, and full operations by December 31, 2028. CMB‑S4 must deploy at least 500,000 superconducting detectors on millimeter‑wave telescopes and start full operations by December 31, 2030. Specific construction funding is authorized: for LBNF $180,000,000 (FY2023), $255,000,000 (FY2024), $305,000,000 (FY2025), $305,000,000 (FY2026), $305,000,000 (FY2027); for PIP‑II $130,000,000 (FY2023), $120,000,000 (FY2024), $120,000,000 (FY2025), $115,000,000 (FY2026), $110,000,000 (FY2027); for CMB‑S4 $10,000,000 (FY2023), $25,000,000 (FY2024), $60,000,000 (FY2025), $80,000,000 (FY2026), $80,000,000 (FY2027). The Office of Science is also authorized overall amounts of $1,159,520,000 (FY2023), $1,289,891,200 (FY2024), $1,428,284,672 (FY2025), $1,499,881,752 (FY2026), and $1,554,874,657 (FY2027).
Full Legal Text
The Public Health and Welfare — Source: USLM XML via OLRC
Legislative History
Reference
Citation
42 U.S.C. § 18643
Title 42 — The Public Health and Welfare
Last Updated
Apr 6, 2026
Release point: 119-73