PIII Project Overview and Status

TL;DR

The PIP-II project at Fermilab is a major upgrade to its accelerator complex, featuring a superconducting linac to produce high-intensity neutrino beams and involving international collaboration, with ongoing construction and initial tests showing promising results.

Contribution

This paper provides an overview of the PIP-II project's design, status, and international collaboration efforts, highlighting its innovative superconducting linac technology and upgrade capabilities.

Findings

First cryomodules installed and accelerated beam above 17 MeV

Project baselined in April 2022 and construction underway

International collaboration includes contributions from multiple countries

Abstract

The Proton Improvement Plan II (PIP-II) project is an essential upgrade to Fermilab's particle accelerator complex to enable the world's most intense neutrino beam for LBNF/DUNE and a broad particle physics program for many decades to come. PIP-II will deliver 1.2 MW of proton beam power from the Main Injector, upgradeable to multi-MW capability. The central element of PIP-II is an 800 MeV superconducting radio frequency (SRF) linac, which comprises a room temperature front end followed by an SRF section. The SRF section consists of five different flavors of cavities/cryomodules, including Half Wave Resonators (HWR), Single Spoke and elliptical resonators operating at, or above, state-of-the-art parameters. The first two PIP-II cryomodules, Half Wave Resonator (HWR) and Single Spoke Resonator 1 (SSR1) were installed in the PIP-II Injector Test facility (PIP2IT) and have accelerated beam to above 17 MeV. PIP-II is the first U.S. accelerator project that will be constructed with significant contributions from international partners, including India, Italy, France, United Kingdom and Poland. The project was baselined in April 2022, and the construction phase is underway.