Generating Low Beta Regions with Quadrupoles for Final Muon Cooling

Conference · Mon May 01 04:00:00 EDT 2017

OSTI ID:1366523

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

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1. Mississippi U.
2. Fermilab

Muon beams and colliders are rich sources of new physics, if muons can be cooled. A normalized rms transverse muon emittance of 280 microns has been achieved in simulation with short solenoids and a betatron function of 3 cm. Here we use ICOOL, G4beamline, and MAD-X to explore using a 400 MeV/c muon beam and strong focusing quadrupoles to approach a normalized transverse emittance of 100 microns and finish 6D muon cooling. The low beta regions produced by the quadrupoles are occupied by dense, low Z absorbers, such as lithium hydride or beryllium, that cool the beam. Equilibrium transverse emittance is linearly proportional to the beta function. Reverse emittance exchange with septa and/or wedges is then used to decrease transverse emittance from 100 to 25 microns at the expense of longitudinal emittance for a high energy lepton collider. Work remains to be done on chromaticity correction.

• 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: 1366523
• Report Number(s): FERMILAB-CONF-17-166-APC; IPAC-2017-MOPAB014; 1607494
• Country of Publication: United States
• Language: English

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