R&D toward design for a pion-production target for Mu2e-II

Conference · Fri Jan 01 04:00:00 EST 2021 · TBD

DOI:https://doi.org/10.2172/1824860· OSTI ID:1824860

Lynch, Kevin Richard ^[1]; Neuffer, David V. ^[2]; Popp, James Lewis ^[1]; Pronskikh, Vitaly Stanislavovich ^[2]; Pushka, David R. ^[2]

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1. City Coll., N.Y.
2. Fermilab

The Mu2e experiment at Fermilab will search for evidence of charged lepton flavor violation by observing the conversion of a negative muon into an electron in the Coulomb field of a nucleus without emission of neutrinos and will probe effective new-physics mass scales in the 103-104 TeV range. One of the main parts of the Mu2e experimental setup is its target station in which negative pions are generated in interactions of the 8 GeV primary proton beam with a tungsten target, which will be capable of producing $$2\times10^{17}$$ negative muons per year. Mu2e can be extended by a next generation experiment, Mu2e-II, with a sensitivity improved by another factor of 10 or more as enabled by the PIP-II accelerator upgrade project. PIP-II is a 250-meter-long linac capable of accelerating a 2 mA proton beam to a kinetic energy of 800 MeV corresponding to 1.6 MW of power. To achieve another factor of ten improvement in sensitivity, Mu2e-II will require about 100 kW of proton beam on target, and the added power requires a new target design. We will present our progress in RD of a target station conceptual design for Mu2e-II, using the MARS15 and G4beamline Monte-Carlo codes toward a selection between granular, conveyor, and rotating cylindrical target options.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1824860
• Report Number(s): FERMILAB-POSTER-21-005-AD; oai:inspirehep.net:1919022
• Conference Information: Journal Name: TBD
• Country of Publication: United States
• Language: English