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Title	Positron Driven Muon Source for a Muon Collider: Recent Developments
Authors	M.E. Biagini, M. Antonelli, O.R. Blanco-García, M. Boscolo, A. Ciarma, A. Giribono, S. Guiducci, C. Vaccarezza, A. Variola INFN/LNF, Frascati, Italy A. Bacci INFN-Milano, Milano, Italy M. Bauce, F. Collamati INFN-Roma1, Rome, Italy G. Cesarini INFN-Roma, Roma, Italy I. Chaikovska, R. Chehab LAL, Orsay, France S.M. Liuzzo, P. Raimondi ESRF, Grenoble, France D. Lucchesi Univ. degli Studi di Padova, Padova, Italy N. Pastrone INFN-Torino, Torino, Italy
Abstract	The design of a future multi-TeV muon collider needs new ideas to overcome the technological challenges related to muon production, cooling, accumulation and acceleration. The Low Emittance Muon Accelerator (LEMMA) concept *,** presents in this paper an upgraded layout of a positron driven muon source. The positron beam, stored in a ring with high energy acceptance and low emittance, is extracted and driven in a push-pull configuration to a multi-target system, to produce muon pairs at threshold on the target’s electrons. This solution alleviates the issues related to the power deposited and the integrated Peak Energy Density Deposition on the targets. Muons produced in the multi-target system will then be accumulated in many parallel rings before acceleration and injection in the collider. A special multi-target line lattice has been designed to cope with the focusing of both the positron and muon beams. Studies on the number, material and thickness of the targets have been carried out. A general layout of the overall scheme and a description is presented, as well as plans for future R&D.
Footnotes & References	* M. Antonelli, P. Raimondi, INFN-13-22/LNF, 2013 ** M. Boscolo, M. Antonelli, O.R. Blanco-Garcia, S. Guiducci, S. Liuzzo, P. Raimondi, F. Collamati, Phys. Rev. Accel. Beams, vol. 21, p. 061005, 2018
Paper	download MOZZPLS2.PDF [0.354 MB / 4 pages]
Slides	download MOZZPLS2_TALK.PDF [4.360 MB]
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Conference	IPAC2019
Series	International Particle Accelerator Conference (10th)
Location	Melbourne, Australia
Date	19-24 May 2019
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Mark Boland (UoM, Saskatoon, SK, Canada); Hitoshi Tanaka (KEK, Tsukuba, Japan); David Button (ANSTO, Kirrawee, NSW, Australia); Rohan Dowd (ANSTO, Kirrawee, NSW, Australia); Volker RW Schaa (GSI, Darmstadt, Germany); Eugene Tan (ANSTO, Kirrawee, NSW, Australia)
Online ISBN	978-3-95450-208-0
Received	14 May 2019
Accepted	20 May 2019
Issue Date	21 June 2019
DOI	doi:10.18429/JACoW-IPAC2019-MOZZPLS2
Pages	49-52
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.