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Title: A hybrid six-dimensional muon cooling channel using gas filled rf cavities

Abstract

We describe an alternative cooling approach to prevent rf breakdown in magnetic fields that simultaneously reduces all six phase-space dimensions of a muon beam. In this process, cooling is accomplished by reducing the beam momentum through ionization energy loss in discrete absorbers and replenishing the momentum loss only in the longitudinal direction through gas-filled rf cavities. The advantage of gas filled cavities is that they can run at high gradients in magnetic fields without breakdown. Using this approach, we show that our channel can achieve a decrease of the 6-dimensional phase-space volume by several orders of magnitude. With the aid of numerical simulations, we demonstrate that the transmission of our proposed channel is comparable to that of an equivalent channel with vacuum rf cavities. Finally, we discuss the sensitivity of the channel performance to the choice of gas and operating pressure.

Authors:
 [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1406242
Report Number(s):
FERMILAB-PUB-17-367-AD; arXiv:1709.02331
Journal ID: ISSN 1748-0221; 1622310
Grant/Contract Number:  
AC02-07CH11359; SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 12; Journal Issue: 09; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; accelerator modelling and simulations (multiple-particle dynamics; single-particle dynamics); beam dynamics

Citation Formats

Stratakis, D. A hybrid six-dimensional muon cooling channel using gas filled rf cavities. United States: N. p., 2017. Web. https://doi.org/10.1088/1748-0221/12/09/P09027.
Stratakis, D. A hybrid six-dimensional muon cooling channel using gas filled rf cavities. United States. https://doi.org/10.1088/1748-0221/12/09/P09027
Stratakis, D. Mon . "A hybrid six-dimensional muon cooling channel using gas filled rf cavities". United States. https://doi.org/10.1088/1748-0221/12/09/P09027. https://www.osti.gov/servlets/purl/1406242.
@article{osti_1406242,
title = {A hybrid six-dimensional muon cooling channel using gas filled rf cavities},
author = {Stratakis, D.},
abstractNote = {We describe an alternative cooling approach to prevent rf breakdown in magnetic fields that simultaneously reduces all six phase-space dimensions of a muon beam. In this process, cooling is accomplished by reducing the beam momentum through ionization energy loss in discrete absorbers and replenishing the momentum loss only in the longitudinal direction through gas-filled rf cavities. The advantage of gas filled cavities is that they can run at high gradients in magnetic fields without breakdown. Using this approach, we show that our channel can achieve a decrease of the 6-dimensional phase-space volume by several orders of magnitude. With the aid of numerical simulations, we demonstrate that the transmission of our proposed channel is comparable to that of an equivalent channel with vacuum rf cavities. Finally, we discuss the sensitivity of the channel performance to the choice of gas and operating pressure.},
doi = {10.1088/1748-0221/12/09/P09027},
journal = {Journal of Instrumentation},
number = 09,
volume = 12,
place = {United States},
year = {2017},
month = {9}
}

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