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Title: Final cooling for a high-energy high-luminosity lepton collider

Journal Article · · Journal of Instrumentation
 [1];  [2];  [3];  [3];  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of Mississippi, Oxford, MS (United States)
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Here, a high-energy muon collider requires a 'final cooling' system that reduces transverse emittance by a factor of ~ 10, while allowing the longitudinal emittance to increase. The baseline approach has low-energy transverse cooling within high-field solenoids, with strong longitudinal heating. This approach and its recent simulation are discussed. Alternative approaches, which more explicitly include emittance exchange are also presented. Round-to-flat beam transform, transverse slicing, and longitudinal bunch coalescence are possible components of an alternative approach. Wedge-based emittance exchange could provide much of the required transverse cooling with longitudinal heating. Li-lens and quadrupole focusing systems could also provide much of the required final cooling.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1244524
Report Number(s):
FERMILAB-PUB-15-524-AD-APC; arXiv:1612.08960; 1507168
Journal Information:
Journal of Instrumentation, Vol. 12, Issue 07; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (8)

Tapered channel for six-dimensional muon cooling towards micron-scale emittances journal September 2013
High field – low energy muon ionization cooling channel journal September 2015
Photoinjector generation of a flat electron beam with transverse emittance ratio of 100 journal March 2006
Li-rod based muon ionization cooling channel journal April 2012
Optical principles of beam transport for relativistic electron cooling journal September 2000
Circular modes, beam adapters, and their applications in beam optics journal July 2002
Experimental results on electron beam combination and bunch frequency multiplication journal April 2004
Theory of the alternating-gradient synchrotron journal January 1958

Cited By (1)

Demonstration of cooling by the Muon Ionization Cooling Experiment journal February 2020

Figures / Tables (11)

Figure 1(p. 3)figure Figure 1
Table 1(p. 3)table Table 1
Figure 2(p. 5)figure Figure 2
Figure 3(p. 5)figure Figure 3
Figure 4(p. 7)figure Figure 4
Figure 5(p. 7)figure Figure 5
Figure 6(p. 12)figure Figure 6
Figure 7(p. 13)figure Figure 7
Table 2(p. 13)table Table 2
Figure 8(p. 15)figure Figure 8
Table 3(p. 15)table Table 3

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