TY  - CONF
AU  - Biagini, M.E.
AU  - Antonelli, M.
AU  - Bacci, A.
AU  - Bauce, M.
AU  - Blanco-García, O.R.
AU  - Boscolo, M.
AU  - Cesarini, G.
AU  - Chaikovska, I.
AU  - Chehab, R.
AU  - Ciarma, A.
AU  - Collamati, F.
AU  - Giribono, A.
AU  - Guiducci, S.
AU  - Liuzzo, S.M.
AU  - Lucchesi, D.
AU  - Pastrone, N.
AU  - Raimondi, P.
AU  - Vaccarezza, C.
AU  - Variola, A.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Positron Driven Muon Source for a Muon Collider: Recent Developments
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - 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.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 49
EP  - 52
KW  - target
KW  - emittance
KW  - damping
KW  - collider
KW  - positron
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOZZPLS2
UR  - http://jacow.org/ipac2019/papers/mozzpls2.pdf
ER  - 

TY  - CONF
AU  - Métral, E.
AU  - Migliorati, M.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Longitudinal Mode-Coupling Instability: GALACLIC Vlasov Solver vs. Macroparticle Tracking Simulations
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Following the same approach as for the recently developed GALACTIC Vlasov solver in the transverse plane and taking into account the potential-well distortion, a new Vlasov solver, called GALACLIC, was developed for the longitudinal plane. In parallel, a new mode analysis was implemented for the post-processing of the results obtained through macroparticle tracking simulations. The results of the several benchmarks performed between the two methods are presented.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 320
EP  - 323
KW  - impedance
KW  - simulation
KW  - coupling
KW  - synchrotron
KW  - proton
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPGW089
UR  - http://jacow.org/ipac2019/papers/mopgw089.pdf
ER  - 

TY  - CONF
AU  - Blanco-García, O.R.
AU  - Antonelli, M.
AU  - Biagini, M.E.
AU  - Boscolo, M.
AU  - Cesarini, G.
AU  - Ciarma, A.
AU  - Collamati, F.
AU  - Guiducci, S.
AU  - Li Voti, R.
AU  - Raimondi, P.
AU  - Vaccarezza, C.
AU  - Variola, A.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Multi-Target Lattice for Muon Production From e⁺ Beam Annihilation on Target
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - The Low Emittance Muon Accelerator~(LEMMA) aims at producing small emittance muons from positron annihilation with electrons in a target. Given the low cross section of the production process, a large number of positrons on the target are required, exposing it to high power deposition and the beam to large degradation because of multiple scattering and bremstrahlung. A multi-target IP, and multi-IP line has been studied to reduce the power deposition per target and the degradation of the positron beam while preserving the number of muon pairs produced. The lattice copes with the focusing and transport of three beams at two different energies, the positron beam at 45 GeV, and µ⁺+ and µ⁻ beams at 22.5~GeV. Studies on the beam dynamics, number of targets, material and thickness of the targets are reported in this paper.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 578
EP  - 581
KW  - target
KW  - positron
KW  - emittance
KW  - lattice
KW  - site
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPRB003
UR  - http://jacow.org/ipac2019/papers/moprb003.pdf
ER  -