COOL2015 - List of Keywords (laser)

Paper	Title	Other Keywords	Page
TUZAUD03	Simulation Studies on Intensity Limitations of Laser Cooling at High Energy	synchrotron, ion, space-charge, scattering	93
	L. Eidam, O. Boine-Frankenheim, D.F.A. Winters GSI, Darmstadt, Germany
	Within the FAIR project, laser cooling of highly intense, ultra relativistic ion beams will be attempted for the first time, and in a large (circumference 1084 m) and strong (max. magnetic rigidity 100 Tm) synchrotron, called "SIS100". Laser cooling of such ion beams should result in a further increase of the longitudinal phase space density and in non-Gaussian longitudinal beam profiles. For stable operation of such ion beams, and for optimization of the cooling process, both the laser force and the high-intensity effects have to be studied numerically in advance. The efficiency of laser cooling has been analyzed for different synchrotron frequency regimes. At high beam intensities, intra-beam scattering and space-charge effects have been found to counteract the laser cooling force. We will discuss how they influence the laser cooling efficiency and thus affect the cooling time.
	Slides TUZAUD03 [5.044 MB]
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WEWAUD04	Single-pass-amplifier for Optical Stochastic Cooling Proof-of-Principle Experiment at IOTA	undulator, radiation, pick-up, kicker	128
	M.B. Andorf, P. Piot Northern Illinois University, DeKalb, Illinois, USA V.A. Lebedev, P. Piot, J. Ruan Fermilab, Batavia, Illinois, USA
	Funding: This work is supported by the US DOE contracts No. DE-SC0013761 with Northern Illinois University and No. DE-AC02-07CH11359 with the Fermi Research Alliance, LLC which operates Fermilab. Test design of a single-pass mid-infrared Cr:ZnSe optical amplifier for an optical stochastic cooling (OSC) proof-ofprinciple experiment foreseen at the Integrable Optics Test Accelerator (IOTA) ring part of Fermilab Accelerator Science & Technology (FAST) facility. We especially present an estimate of the gain and evaluate effects of thermal lensing. A conceptual design of the amplifier and associated optics is provided.
	Slides WEWAUD04 [1.155 MB]
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THWCR02	The SNS Laser Stripping Injection Experiment and its Implications on Beam Accumulation	injection, emittance, experiment, proton	140
	S.M. Cousineau, T.V. Gorlov, Y. Liu, A.A. Menshov, M.A. Plum, A. Rakhman ORNL, Oak Ridge, Tennessee, USA K. Aulenbacher IKP, Mainz, Germany
	The laser assisted H⁻ charge exchange concept is under development at the Spallation Neutron Source (SNS) as on option for replacing traditional carbon-based foil technology in future accelerators. A laser based stripping system has the potential to alleviate limiting issues with foil technology, paving the way for accumulation of much higher density proton beams. This paper discusses the advantages and limitations of a laser-based stripping system compared with traditional foil-based charge exchange systems for various beam accumulation scenarios, scaling from SNS experience with high power beam injection and calculations of laser stripping parameters. In addition, preparations for an experimental demonstration of laser assisted stripping for microsecond long 1 GeV, H⁻ beams are described.
	Slides THWCR02 [34.408 MB]
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THZAUD01	Crystalline Beam Studies with Andy Sessler	storage-ring, lattice, ion, focusing	155
	J. Wei FRIB, East Lansing, Michigan, USA X.-P. Li Skyworks Solutions, Inc., Newbury Park. California, USA H. Okamoto HU/AdSM, Higashi-Hiroshima, Japan
	Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 and the National Science Foundation, under Cooperative Agreement PHY-1102511. For over two decades since 1992, Andy Sessler worked with us as a hobby on the topic of crystallization of charged ion beams and cooling methods. In this paper, we review the studies jointly performed with Andy highlighting major findings and challenges, and discuss current status and possible future topics and directions.
	Slides THZAUD01 [20.501 MB]
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Paper

Title

Other Keywords

Page

TUZAUD03

Simulation Studies on Intensity Limitations of Laser Cooling at High Energy

synchrotron, ion, space-charge, scattering

93

L. Eidam, O. Boine-Frankenheim, D.F.A. Winters
GSI, Darmstadt, Germany

Within the FAIR project, laser cooling of highly intense, ultra relativistic ion beams will be attempted for the first time, and in a large (circumference 1084 m) and strong (max. magnetic rigidity 100 Tm) synchrotron, called "SIS100". Laser cooling of such ion beams should result in a further increase of the longitudinal phase space density and in non-Gaussian longitudinal beam profiles. For stable operation of such ion beams, and for optimization of the cooling process, both the laser force and the high-intensity effects have to be studied numerically in advance. The efficiency of laser cooling has been analyzed for different synchrotron frequency regimes. At high beam intensities, intra-beam scattering and space-charge effects have been found to counteract the laser cooling force. We will discuss how they influence the laser cooling efficiency and thus affect the cooling time.

Slides TUZAUD03 [5.044 MB]

Export •

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

WEWAUD04

Single-pass-amplifier for Optical Stochastic Cooling Proof-of-Principle Experiment at IOTA

undulator, radiation, pick-up, kicker

128

M.B. Andorf, P. Piot
Northern Illinois University, DeKalb, Illinois, USA
V.A. Lebedev, P. Piot, J. Ruan
Fermilab, Batavia, Illinois, USA

Funding: This work is supported by the US DOE contracts No. DE-SC0013761 with Northern Illinois University and No. DE-AC02-07CH11359 with the Fermi Research Alliance, LLC which operates Fermilab.
Test design of a single-pass mid-infrared Cr:ZnSe optical amplifier for an optical stochastic cooling (OSC) proof-ofprinciple experiment foreseen at the Integrable Optics Test Accelerator (IOTA) ring part of Fermilab Accelerator Science & Technology (FAST) facility. We especially present an estimate of the gain and evaluate effects of thermal lensing. A conceptual design of the amplifier and associated optics is provided.

Slides WEWAUD04 [1.155 MB]

Export •

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

THWCR02

The SNS Laser Stripping Injection Experiment and its Implications on Beam Accumulation

injection, emittance, experiment, proton

140

S.M. Cousineau, T.V. Gorlov, Y. Liu, A.A. Menshov, M.A. Plum, A. Rakhman
ORNL, Oak Ridge, Tennessee, USA
K. Aulenbacher
IKP, Mainz, Germany

The laser assisted H⁻ charge exchange concept is under development at the Spallation Neutron Source (SNS) as on option for replacing traditional carbon-based foil technology in future accelerators. A laser based stripping system has the potential to alleviate limiting issues with foil technology, paving the way for accumulation of much higher density proton beams. This paper discusses the advantages and limitations of a laser-based stripping system compared with traditional foil-based charge exchange systems for various beam accumulation scenarios, scaling from SNS experience with high power beam injection and calculations of laser stripping parameters. In addition, preparations for an experimental demonstration of laser assisted stripping for microsecond long 1 GeV, H⁻ beams are described.

Slides THWCR02 [34.408 MB]

Export •

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

THZAUD01

Crystalline Beam Studies with Andy Sessler

storage-ring, lattice, ion, focusing

155

J. Wei
FRIB, East Lansing, Michigan, USA
X.-P. Li
Skyworks Solutions, Inc., Newbury Park. California, USA
H. Okamoto
HU/AdSM, Higashi-Hiroshima, Japan

Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 and the National Science Foundation, under Cooperative Agreement PHY-1102511.
For over two decades since 1992, Andy Sessler worked with us as a hobby on the topic of crystallization of charged ion beams and cooling methods. In this paper, we review the studies jointly performed with Andy highlighting major findings and challenges, and discuss current status and possible future topics and directions.

Slides THZAUD01 [20.501 MB]

Export •

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