Fermilab proton accelerator complex status and improvement plans

Abstract

Fermilab carries out an extensive program of accelerator-based high energy particle physics research at the Intensity Frontier that relies on the operation of 8 GeV and 120 GeV proton beamlines for a n umber of fixed target experiments. Routine operation with a world-record 700kW of average 120 GeV beam power on the neutrino target was achieved in 2017 as the result of the Proton Improvement Plan (PIP) upgrade. There are plans to further increase the power to 900 -1000 kW. The next major upgrade of the FNAL accelerator complex, called PIP-II, is under development. It aims at 1.2MW beam power on target at the start of the LBNF/DUNE experiment in the middle of the next decade and assumes replacement of the existing 40-years old 400 MeV normal-conducting Linac with a modern 800 MeV superconducting RF linear accelerator. There are several concepts to further double the beam power to >2.4MW after replacement of the existing 8 GeV Booster synchrotron. In this articlewe discuss current performance of the Fermilab proton accelerator complex, the upgrade plans for the next two decades and the accelerator R&D program to address cost and performance risks for these upgrades.

Physics beyond colliders at CERN: beyond the Standard Model working group report

“…The collaboration plans to submit an official proposal to the Fermilab physics advisory committee in 2019 to install the ECAL at the end of the next polarization target run in 2021 and acquire ∼ 10 18 (10 20 ) pot by 2024 (2030s). The 10 20 pot yield could be collected as a result of the Fermilab Proton Improvement Plan [206]. Ref.…”

Dark sectors at the Fermilab SeaQuest experiment

“…We will denote this luminosity phase as "Phase I." As another benchmark luminosity, we also outline the SeaQuest reach with 10 20 POT ("Phase II"), a dataset similar to that of MiniBooNE [25] and the proposed SHiP experiment, which could be collected in the coming years as a result of the Fermilab Proton Improvement Plan [26].…”

Record high-gradient SRF beam acceleration at Fermilab

“…The achieved beam parameters-energy, intensity, stability and emittance-fully meet the specifications of the program of accelerator R&D at the IOTA ring toward intensity frontier beams [19,46]. Besides this main goal, we plan to continue exploration of the SRF system performance with full ILC-type beam pulse specifications, such as 5 Hz repetition rate and up to 1 ms beam pulse length.…”