Final 6D Muon Ionization Colling using Strong Focusing Quadrupoles

Conference · Tue Nov 15 04:00:00 EST 2016

OSTI ID:1334261

Hart, T. L. ^[1]; Acosta, J. G. ^[1]; Cremaldi, L. M. ^[1]; Oliveros, S. J. ^[1]; Summers, D. J. ^[1]; Neuffer, D. V. ^[2]

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1. Mississippi U.
2. Fermilab

Abstract Low emittance muon beam lines and muon colliders are potentially a rich source of BSM physics for future exper- imenters. A muon beam normalized emittance of ax,y,z = (280, 280, 1570)µm has been achieved in simulation with short solenoids and a betatron function of 3 cm. Here we use ICOOL and MAD-X to explore using a 400 MeV/c muon beam and strong focusing quadrupoles to achieve a normalized transverse emittance of 100 µm and complete 6D cooling. The low beta regions, as low as 5 mm, produced by the quadrupoles are occupied by dense, low Z absorbers, such as lithium hydride or beryllium, that cool the beam transversely. Equilibrium transverse emittance is linearly proportional to the transverse betatron function. Reverse emittance exchange with septa and/or wedges is then used to decrease transverse emittance from 100 to 25 µm at the expense of longitudinal emittance for a high energy lepton collider. Cooling challenges include chromaticity correction, ssband overlap, quadrupole acceptance, and staying in phase with RF.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: Muon Collider
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1334261
• Report Number(s): FERMILAB-CONF-2016-531-AD-APC; NAPAC-2016-TUPOB44; 1501381
• Country of Publication: United States
• Language: English

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