IPAC2014 - List of Authors (Kahn, S.A.)

Paper	Title	Page
TUPRO116	Conceptual Design of the Muon Cooling Channel to Incorporate RF Cavities	1325
	S.A. Kahn, G. Flanagan, F. Marhauser Muons, Inc, Illinois, USA M.L. Lopes, K. Yonehara Fermilab, Batavia, Illinois, USA
	Funding: Work supported by U.S. DOE STTR/SBIR grant DE-SC00006266 A helical cooling channel (HCC) consisting of a pressurized gas absorber imbedded in a magnetic channel that provides solenoid, helical dipole and helical quadrupole fields has been shown to provide six-dimensional phase space reduction for muon beams. Such a channel can be implemented by a helical solenoid (HS) composed of short solenoid coils arranged in a helical pattern. The magnetic channel will provide the desired Bphi, Bz, and dBphi/dr along the reference path. The channel must allow enough space for RF cavities which replace energy lost in the absorber material present for the cooling process. The study will describe how to achieve the desired field while allowing sufficient space for the cavities. The limits to this design imposed by the achievable current density in the coils will be discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO116
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TUPME016	Status of the Complete Muon Cooling Channel Design and Simulations	1379
	C.Y. Yoshikawa, C.M. Ankenbrandt, R.P. Johnson, S.A. Kahn, F. Marhauser Muons, Inc, Illinois, USA Y.I. Alexahin, D.V. Neuffer, K. Yonehara Fermilab, Batavia, Illinois, USA Y.S. Derbenev, V.S. Morozov, A.V. Sy JLab, Newport News, Virginia, USA
	Funding: Work supported in part by DOE STTR grant DE-SC 0007634. Muon colliders could provide the most sensitive measurement of the Higgs mass and return the US back to the Energy Frontier. Central to the capabilities of such muon colliders are the cooling channels that provide the extraordinary reduction in emittance required for the precise Higgs mass measurement and increased luminosity for enhanced discovery potential of an Energy Frontier Machine. We present the status of the design and simulation of a complete muon cooling channel that is based on the Helical Cooling Channel (HCC), which operates via continuous emittance exchange to enable the most efficient design.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME016
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TUPME017	Design and Simulation of a Matching System into the Helical Cooling Channel	1382
	C.Y. Yoshikawa MuPlus, Inc., Newport News, Virginia, USA Y.I. Alexahin, D.V. Neuffer, K. Yonehara Fermilab, Batavia, Illinois, USA C.M. Ankenbrandt, R.P. Johnson, S.A. Kahn, F. Marhauser Muons, Inc, Illinois, USA Y.S. Derbenev, V.S. Morozov, A.V. Sy JLab, Newport News, Virginia, USA
	Funding: Work supported in part by DOE STTR grant DE-SC 0007634. Muon colliders could provide the most sensitive measurement of the Higgs mass and return the US back to the Energy Frontier. Central to the capabilities of muon colliders are the cooling channels that provide the extraordinary reduction in emittance required for the precise Higgs mass measurement and increased luminosity for enhanced discovery potential of an Energy Frontier Machine. The Helical Cooling Channel (HCC) is able to achieve such emittance reduction and matching sections within the HCC have been successfully designed in the past with lossless transmission and no emittance growth. However, matching into the HCC from a straight solenoid poses a challenge, since a large emittance beam must cross transition. We elucidate on the challenge and present evaluations of two solutions, along with concepts to integrate the operations of a Charge Separator and match into the HCC.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME017
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WEPRI100	Magnetic Design Constraints of Helical Solenoids	2731
	M.L. Lopes, S. Krave, J.C. Tompkins, K. Yonehara Fermilab, Batavia, Illinois, USA G. Flanagan, S.A. Kahn Muons, Inc, Illinois, USA K.E. Melconian Texas A&M University, College Station, Texas, USA
	Helical solenoids have been proposed as an option for a Helical Cooling Channel for muons in a proposed Muon Collider. Helical solenoids can provide the required three main field components: solenoidal, helical dipole, and a helical gradient. In general terms, the last two are a function of many geometric parameters: coil aperture, coil radial and longitudinal dimensions, helix period and orbit radius. In this paper, we present design studies of a Helical Solenoid, addressing the geometric tunability limits and auxiliary correction system.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI100
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THPME054	RF Cavity Design Aspects for a Helical Muon Beam Cooling Channel	3352
	F. Marhauser, G. Flanagan, R.P. Johnson, S.A. Kahn Muons, Inc, Illinois, USA K. Yonehara Fermilab, Batavia, Illinois, USA
	Funding: Work supported under U.S. DOE Grant Application Number DE-SC0006266 A Helical Cooling Channel (HCC) promises efficient six-dimensional ionization cooling of muon beams by utilizing high-pressurized gas as a continuous absorber within a magnetic channel embedding RF cavities. The progress on cavity design, tailored for such a cooling channel, is discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME054
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Paper

Title

Page

Conceptual Design of the Muon Cooling Channel to Incorporate RF Cavities

1325

S.A. Kahn, G. Flanagan, F. Marhauser
Muons, Inc, Illinois, USA
M.L. Lopes, K. Yonehara
Fermilab, Batavia, Illinois, USA

Funding: Work supported by U.S. DOE STTR/SBIR grant DE-SC00006266
A helical cooling channel (HCC) consisting of a pressurized gas absorber imbedded in a magnetic channel that provides solenoid, helical dipole and helical quadrupole fields has been shown to provide six-dimensional phase space reduction for muon beams. Such a channel can be implemented by a helical solenoid (HS) composed of short solenoid coils arranged in a helical pattern. The magnetic channel will provide the desired Bphi, Bz, and dBphi/dr along the reference path. The channel must allow enough space for RF cavities which replace energy lost in the absorber material present for the cooling process. The study will describe how to achieve the desired field while allowing sufficient space for the cavities. The limits to this design imposed by the achievable current density in the coils will be discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO116

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPME016

Status of the Complete Muon Cooling Channel Design and Simulations

1379

C.Y. Yoshikawa, C.M. Ankenbrandt, R.P. Johnson, S.A. Kahn, F. Marhauser
Muons, Inc, Illinois, USA
Y.I. Alexahin, D.V. Neuffer, K. Yonehara
Fermilab, Batavia, Illinois, USA
Y.S. Derbenev, V.S. Morozov, A.V. Sy
JLab, Newport News, Virginia, USA

Funding: Work supported in part by DOE STTR grant DE-SC 0007634.
Muon colliders could provide the most sensitive measurement of the Higgs mass and return the US back to the Energy Frontier. Central to the capabilities of such muon colliders are the cooling channels that provide the extraordinary reduction in emittance required for the precise Higgs mass measurement and increased luminosity for enhanced discovery potential of an Energy Frontier Machine. We present the status of the design and simulation of a complete muon cooling channel that is based on the Helical Cooling Channel (HCC), which operates via continuous emittance exchange to enable the most efficient design.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME016

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPME017

Design and Simulation of a Matching System into the Helical Cooling Channel

1382

C.Y. Yoshikawa
MuPlus, Inc., Newport News, Virginia, USA
Y.I. Alexahin, D.V. Neuffer, K. Yonehara
Fermilab, Batavia, Illinois, USA
C.M. Ankenbrandt, R.P. Johnson, S.A. Kahn, F. Marhauser
Muons, Inc, Illinois, USA
Y.S. Derbenev, V.S. Morozov, A.V. Sy
JLab, Newport News, Virginia, USA

Funding: Work supported in part by DOE STTR grant DE-SC 0007634.
Muon colliders could provide the most sensitive measurement of the Higgs mass and return the US back to the Energy Frontier. Central to the capabilities of muon colliders are the cooling channels that provide the extraordinary reduction in emittance required for the precise Higgs mass measurement and increased luminosity for enhanced discovery potential of an Energy Frontier Machine. The Helical Cooling Channel (HCC) is able to achieve such emittance reduction and matching sections within the HCC have been successfully designed in the past with lossless transmission and no emittance growth. However, matching into the HCC from a straight solenoid poses a challenge, since a large emittance beam must cross transition. We elucidate on the challenge and present evaluations of two solutions, along with concepts to integrate the operations of a Charge Separator and match into the HCC.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME017

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI100

Magnetic Design Constraints of Helical Solenoids

2731

M.L. Lopes, S. Krave, J.C. Tompkins, K. Yonehara
Fermilab, Batavia, Illinois, USA
G. Flanagan, S.A. Kahn
Muons, Inc, Illinois, USA
K.E. Melconian
Texas A&M University, College Station, Texas, USA

Helical solenoids have been proposed as an option for a Helical Cooling Channel for muons in a proposed Muon Collider. Helical solenoids can provide the required three main field components: solenoidal, helical dipole, and a helical gradient. In general terms, the last two are a function of many geometric parameters: coil aperture, coil radial and longitudinal dimensions, helix period and orbit radius. In this paper, we present design studies of a Helical Solenoid, addressing the geometric tunability limits and auxiliary correction system.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI100

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPME054

RF Cavity Design Aspects for a Helical Muon Beam Cooling Channel

3352

F. Marhauser, G. Flanagan, R.P. Johnson, S.A. Kahn
Muons, Inc, Illinois, USA
K. Yonehara
Fermilab, Batavia, Illinois, USA

Funding: Work supported under U.S. DOE Grant Application Number DE-SC0006266
A Helical Cooling Channel (HCC) promises efficient six-dimensional ionization cooling of muon beams by utilizing high-pressurized gas as a continuous absorber within a magnetic channel embedding RF cavities. The progress on cavity design, tailored for such a cooling channel, is discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME054

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)