COOL2021 - List of Authors (Derbenev, Y.S.)

Paper	Title	Page
S702	Plasma Lens in Parametric Resonance Ionization Cooling	57
	K. Yonehara Fermilab, Batavia, Illinois, USA Y.S. Derbenev, V.S. Morozov, A.V. Sy JLab, Newport News, Virginia, USA R.P. Johnson Muons, Inc, Illinois, USA
	We present a concept of a plasma lens in a parametric resonance ionization cooling (PIC) for extra cooling of muon colliders. The PIC concept has been developed to overcome most aberrations. However, parasitic non-linear aberrations which is induced in an ionization cooling material still reduce a dynamic aperture of the PIC. The plasma lens generates an azimuthally symmetric focusing field in gas-filled RF cavities that is several orders of magnitude stronger than the conventional superconducting magnets. It allows for reduction of the beam size at the beam expansion points. This reduces the size of the aberrations and therefore greatly simplifies their compensation.
	Slides S702 [18.566 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2021-S702
About •	paper received ※ 02 November 2021 paper accepted ※ 13 December 2021 issue date ※ 13 November 2021
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S801	A Dual Energy Electron Storage Ring Cooler
	F. Lin, V.S. Morozov ORNL RAD, Oak Ridge, Tennessee, USA Y.S. Derbenev, G.A. Krafft, Y. Zhang JLab, Newport News, Virginia, USA B. Dhital, G.A. Krafft ODU, Norfolk, Virginia, USA
	Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, and Office of Nuclear Physics under Contracts DE-AC05-06OR23177 and DE-AC02-06CH11357. A high-current electron storage-ring cooler is proposed to cool ion beams in a collider to reduce the beam emittance and compensate the emittance degradation due to the intra-beam scattering (IBS) effect. Such a storage ring cooler is consisted of two sections with significantly different energies: the low energy section is designed for an optimum cooling of ion beams and the high energy section is optimized for desired damping parameters of electron beams. An energy recovering superconducting RF structure is used to provide the necessary energy change. Beam dynamics in this two-energy storage ring is different from and more complicated than it in a single energy system. This paper presents the linear optics design and particle tracking simulation results. IBS time versus damping time and optimization of beam parameters are also discussed in this paper.
	Slides S801 [2.881 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Plasma Lens in Parametric Resonance Ionization Cooling

57

K. Yonehara
Fermilab, Batavia, Illinois, USA
Y.S. Derbenev, V.S. Morozov, A.V. Sy
JLab, Newport News, Virginia, USA
R.P. Johnson
Muons, Inc, Illinois, USA

We present a concept of a plasma lens in a parametric resonance ionization cooling (PIC) for extra cooling of muon colliders. The PIC concept has been developed to overcome most aberrations. However, parasitic non-linear aberrations which is induced in an ionization cooling material still reduce a dynamic aperture of the PIC. The plasma lens generates an azimuthally symmetric focusing field in gas-filled RF cavities that is several orders of magnitude stronger than the conventional superconducting magnets. It allows for reduction of the beam size at the beam expansion points. This reduces the size of the aberrations and therefore greatly simplifies their compensation.

Slides S702 [18.566 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2021-S702

About •

paper received ※ 02 November 2021 paper accepted ※ 13 December 2021 issue date ※ 13 November 2021

Export •

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

S801

A Dual Energy Electron Storage Ring Cooler

F. Lin, V.S. Morozov
ORNL RAD, Oak Ridge, Tennessee, USA
Y.S. Derbenev, G.A. Krafft, Y. Zhang
JLab, Newport News, Virginia, USA
B. Dhital, G.A. Krafft
ODU, Norfolk, Virginia, USA

Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, and Office of Nuclear Physics under Contracts DE-AC05-06OR23177 and DE-AC02-06CH11357.
A high-current electron storage-ring cooler is proposed to cool ion beams in a collider to reduce the beam emittance and compensate the emittance degradation due to the intra-beam scattering (IBS) effect. Such a storage ring cooler is consisted of two sections with significantly different energies: the low energy section is designed for an optimum cooling of ion beams and the high energy section is optimized for desired damping parameters of electron beams. An energy recovering superconducting RF structure is used to provide the necessary energy change. Beam dynamics in this two-energy storage ring is different from and more complicated than it in a single energy system. This paper presents the linear optics design and particle tracking simulation results. IBS time versus damping time and optimization of beam parameters are also discussed in this paper.

Slides S801 [2.881 MB]

Export •

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