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Title: Final Cooling For a High-luminosity High-Energy Lepton Collider

The final cooling system for a high-energy high-luminosity heavy lepton collider requires reduction of the transverse emittance εt by an order of magnitude to ~0.00003 m (rms, N), while allowing longitudinal emittance εL to increase to ~0.1m. In the present baseline approach, this is obtained by transverse cooling of low-energy muons within a sequence of high-field solenoids with low-frequency rf systems. Recent studies of such systems are presented. Since the final cooling steps are mostly emittance exchange, a variant form of that final system can be obtained by a round to flat transform in x-y, with transverse slicing of the enlarged flat transverse dimension followed by longitudinal recombination of the sliced bunchlets. Other variants are discussed. More explicit emittance exchange can greatly reduce the cost of a final cooling system.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1221355
Report Number(s):
FERMILAB-CONF-15-161-AD-APC
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: 6th International Particle Accelerator Conference 2015. Richmond, Virginia, USA, 3-8 May 2015. pp: TUBD2
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS