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Title	Design Status of the LBNF/DUNE Beamline
Authors	V. Papadimitriou, J.E. Anderson, R. Andrews, J.J. Angelo, V.T. Bocean, C.F. Crowley, A. Deshpande, N. Eddy, K. E. Gollwitzer, S. Hays, P. Hurh, J. Hylen, J.A. Johnstone, P.H. Kasper, T.R. Kobilarcik, G.E. Krafczyk, N.V. Mokhov, D. Pushka, S.D. Reitzner, P. Schlabach, V.I. Sidorov, M. Slabaugh, S. Tariq, L.R. Valerio, K. Vaziri, G. Velev, G.L. Vogel, K.E. Williams, R.M. Zwaska Fermilab, Batavia, Illinois, USA C.J. Densham STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
Abstract	The Long Base­line Neu­trino Fa­cil­ity (LBNF) will uti­lize a beam­line lo­cated at Fer­mi­lab to pro­vide and aim a wide band beam of neu­tri­nos of suf­fi­cient in­ten­sity and ap­pro­pri­ate en­ergy to­ward DUNE de­tec­tors, placed 4850 feet un­der­ground at SURF in South Dakota, about 1,300 km away. The pri­mary pro­ton beam (60-120 GeV) will be ex­tracted from the MI-10 sec­tion of Fer­mi­lab's Main In­jec­tor. Neu­tri­nos are pro­duced after the pro­tons hit a four-in­ter­ac­tion length solid tar­get and pro­duce mesons which are sub­se­quently fo­cused by a set of three mag­netic horns into a 194 m long he­lium filled decay pipe where they decay into muons and neu­tri­nos. The pa­ra­me­ters of the fa­cil­ity were de­ter­mined tak­ing into ac­count the physics goals, spa­tial and ra­di­o­log­i­cal con­straints, ex­ten­sive sim­u­la­tions and the ex­pe­ri­ence gained by op­er­at­ing the NuMI fa­cil­ity at Fer­mi­lab. The Beam­line fa­cil­ity is de­signed for ini­tial op­er­a­tion at a pro­ton-beam power of 1.2 MW, with the ca­pa­bil­ity to sup­port an up­grade to about 2.4 MW. LBNF/DUNE ob­tained CD-1 ap­proval in No­vem­ber 2015 and CD-3a ap­proval in Sep­tem­ber 2016. We dis­cuss here the Beam­line de­sign sta­tus and the as­so­ci­ated chal­lenges.
Funding	DOE, contract No. DE-AC02-07CH11359
Paper	download TUPAF075.PDF [1.043 MB / 3 pages]
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Conference	IPAC2018, Vancouver, BC, Canada
Series	International Particle Accelerator Conference (9th)
Proceedings	Link to full IPAC2018 Proccedings
Session	MC4 Poster Session
Date	01-May-18   09:00–12:00
Main Classification	04 Hadron Accelerators
Sub Classification	A21 Secondary Beams
Keywords	target, proton, shielding, site, status
Publisher	JACoW Publishing, Geneva, Switzerland
Editors	Shane Koscielniak (TRIUMF, Vancouver, BC, Canada); Todd Satogata (JLab, Newport News, VA, USA); Volker RW Schaa (GSI, Darmstadt, Germany); Jana Thomson (TRIUMF, Vancouver, BC, Canada)
ISBN	978-3-95450-184-7
Published	June 2018
Copyright	Copyright © 2018 by JACoW, Geneva, Switzerland     cc Creative Commons Attribution 3.0