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Title: Demonstration of cooling by the Muon Ionization Cooling Experiment

Abstract

The use of accelerated beams of electrons, protons or ions has furthered the development of nearly every scientific discipline. However, high-energy muon beams of equivalent quality have not yet been delivered. Muon beams can be created through the decay of pions produced by the interaction of a proton beam with a target. Such ‘tertiary’ beams have much lower brightness than those created by accelerating electrons, protons or ions. High-brightness muon beams comparable to those produced by state-of-the-art electron, proton and ion accelerators could facilitate the study of lepton–antilepton collisions at extremely high energies and provide well characterized neutrino beams. Such muon beams could be realized using ionization cooling, which has been proposed to increase muon-beam brightness. Here we report the realization of ionization cooling, which was confirmed by the observation of an increased number of low-amplitude muons after passage of the muon beam through an absorber, as well as an increase in the corresponding phase-space density. The simulated performance of the ionization cooling system is consistent with the measured data, validating designs of the ionization cooling channel in which the cooling process is repeated to produce a substantial cooling effect. The results presented here are an important step towards achievingmore » the muon-beam quality required to search for phenomena at energy scales beyond the reach of the Large Hadron Collider at a facility of equivalent or reduced footprint.« less

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
Contributing Org.:
[MICE collaboration]
OSTI Identifier:
1556971
Report Number(s):
[FERMILAB-PUB-19-382-AD-APC-ND-PPD; arXiv:1907.08562; RAL-P-2019-003]
[Journal ID: ISSN 0028-0836; oai:inspirehep.net:1744672]
Grant/Contract Number:  
[AC02-07CH11359]
Resource Type:
Accepted Manuscript
Journal Name:
Nature (London)
Additional Journal Information:
[Journal Name: Nature (London); Journal Volume: 578; Journal Issue: 7793]; Journal ID: ISSN 0028-0836
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Bogomilov, M., and et al. Demonstration of cooling by the Muon Ionization Cooling Experiment. United States: N. p., 2020. Web. doi:10.1038/s41586-020-1958-9.
Bogomilov, M., & et al. Demonstration of cooling by the Muon Ionization Cooling Experiment. United States. doi:10.1038/s41586-020-1958-9.
Bogomilov, M., and et al. Wed . "Demonstration of cooling by the Muon Ionization Cooling Experiment". United States. doi:10.1038/s41586-020-1958-9. https://www.osti.gov/servlets/purl/1556971.
@article{osti_1556971,
title = {Demonstration of cooling by the Muon Ionization Cooling Experiment},
author = {Bogomilov, M. and et al.},
abstractNote = {The use of accelerated beams of electrons, protons or ions has furthered the development of nearly every scientific discipline. However, high-energy muon beams of equivalent quality have not yet been delivered. Muon beams can be created through the decay of pions produced by the interaction of a proton beam with a target. Such ‘tertiary’ beams have much lower brightness than those created by accelerating electrons, protons or ions. High-brightness muon beams comparable to those produced by state-of-the-art electron, proton and ion accelerators could facilitate the study of lepton–antilepton collisions at extremely high energies and provide well characterized neutrino beams. Such muon beams could be realized using ionization cooling, which has been proposed to increase muon-beam brightness. Here we report the realization of ionization cooling, which was confirmed by the observation of an increased number of low-amplitude muons after passage of the muon beam through an absorber, as well as an increase in the corresponding phase-space density. The simulated performance of the ionization cooling system is consistent with the measured data, validating designs of the ionization cooling channel in which the cooling process is repeated to produce a substantial cooling effect. The results presented here are an important step towards achieving the muon-beam quality required to search for phenomena at energy scales beyond the reach of the Large Hadron Collider at a facility of equivalent or reduced footprint.},
doi = {10.1038/s41586-020-1958-9},
journal = {Nature (London)},
number = [7793],
volume = [578],
place = {United States},
year = {2020},
month = {2}
}

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