COOL2015 - List of Keywords (synchrotron)

Paper	Title	Other Keywords	Page
MOPF10	Design Beam Diagnostic System for Optical Stochastic Cooling at IOTA Ring	undulator, radiation, kicker, electron	55
	K. Yonehara, V.A. Lebedev Fermilab, Batavia, Illinois, USA J.A. Maloney TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	Validation test of optical stochastic cooling (OSC) with 100 MeV electron beam is designed at IOTA ring at Fermilab. A beam diagnostic system for the test is discussed in this paper. The beam position and bunch length will be measured by using a standard button-pickup BPM; while the beam emittance will be measured by using a CCD-based synchrotron light detector. Especially, accurate time measurement is essential to carry out OSC experiments with a single particle. Desired time resolution is the order of 100 ps to study the cooling decrement in various lattice parameters. SiPM is an attractive solid-state device to detect a time domain synchrotron radiation photon. It can realize a fast rise time < 100 ps with a short time width 1-2 ns FWHM and its quantum efficiency is > 40 % at 420 nm. The beam instrumentation required to tune timing in the OSC insert is also discussed. It is based on the interference of radiation coming from the pickup and kicker undulators.
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TUZAUD03	Simulation Studies on Intensity Limitations of Laser Cooling at High Energy	laser, 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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WEXAUD02	Emittance Growth From Modulated Focusing and Bunched Beam Electron Cooling	electron, emittance, ion, resonance	132
	M. Blaskiewicz, J. Kewisch, C. Montag BNL, Upton, Long Island, New York, USA
	The Low Energy electron Cooling (LEReC) project at Brookhaven employs an energy recovery linac to supply electrons in the 1.6 to 5 MeV range. Along with cooling the stored ion beam these bunches create a coherent space charge field which can cause emittance growth. This process is investigated both analytically and via simulation.
	Slides WEXAUD02 [1.267 MB]
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Paper

Title

Other Keywords

Page

MOPF10

Design Beam Diagnostic System for Optical Stochastic Cooling at IOTA Ring

undulator, radiation, kicker, electron

55

K. Yonehara, V.A. Lebedev
Fermilab, Batavia, Illinois, USA
J.A. Maloney
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

Validation test of optical stochastic cooling (OSC) with 100 MeV electron beam is designed at IOTA ring at Fermilab. A beam diagnostic system for the test is discussed in this paper. The beam position and bunch length will be measured by using a standard button-pickup BPM; while the beam emittance will be measured by using a CCD-based synchrotron light detector. Especially, accurate time measurement is essential to carry out OSC experiments with a single particle. Desired time resolution is the order of 100 ps to study the cooling decrement in various lattice parameters. SiPM is an attractive solid-state device to detect a time domain synchrotron radiation photon. It can realize a fast rise time < 100 ps with a short time width 1-2 ns FWHM and its quantum efficiency is > 40 % at 420 nm. The beam instrumentation required to tune timing in the OSC insert is also discussed. It is based on the interference of radiation coming from the pickup and kicker undulators.

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TUZAUD03

Simulation Studies on Intensity Limitations of Laser Cooling at High Energy

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

WEXAUD02

Emittance Growth From Modulated Focusing and Bunched Beam Electron Cooling

electron, emittance, ion, resonance

132

M. Blaskiewicz, J. Kewisch, C. Montag
BNL, Upton, Long Island, New York, USA

The Low Energy electron Cooling (LEReC) project at Brookhaven employs an energy recovery linac to supply electrons in the 1.6 to 5 MeV range. Along with cooling the stored ion beam these bunches create a coherent space charge field which can cause emittance growth. This process is investigated both analytically and via simulation.

Slides WEXAUD02 [1.267 MB]

Export •

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