COOL2015 - List of Keywords (injection)

Paper	Title	Other Keywords	Page
THWCR02	The SNS Laser Stripping Injection Experiment and its Implications on Beam Accumulation	laser, 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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FRYAUD01	Commissioning of the Rare-RI Ring at RIKEN RI Beam Factory	kicker, pick-up, dipole, detector	182
	Y. Yamaguchi, Y. Abe RIKEN, Saitama, Japan F. Suzaki, M. Wakasugi RIKEN Nishina Center, Wako, Japan
	The Rare-RI Ring (R3) is an isochronous storage ring to measure masses of short-lived rare nuclei by using a TOF method. The expected precision of the measured mass will be of the order of ppm. A commissioning run using a 78Kr beam was performed in June 2015 and basic performances of R3 were verified. We succeeded in injecting a particle, which was randomly produced from a DC beam from cyclotrons, into the R3 individually* with a fast kicker system**, and in extracting the particle from the R3 1 ms after the injection. We measured TOF of the 78Kr particles between the entrance and the exit of the R3 to check the isochronism. Through the first-order adjustment with trim-coils imbedded on the dipole magnets of the R3, the isochronism on the 10-ppm order was achieved for the momentum spread of ±0.2 %. Higher-order adjustment employed in future will lead us to the isochronism on the order of ppm. In addition, we confirmed that a resonance-type Schottky pick-up successfully acquired the revolution frequency information of one particle in a storage mode. In this conference, the technical aspects of the R3 and prospects from the results of the beam commissioning will be discussed. A. Ozawa, et al., Prog. Theor. Exp. Phys. 2012, 03C009 I. Meshkov, et. al., Proceedings of EPAC 2004, Lucerne, Switzerland. * Y. Yamaguchi, et al., Proceedings of STORI'14, in press
	Slides FRYAUD01 [16.252 MB]
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Paper

Title

Other Keywords

Page

THWCR02

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

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

FRYAUD01

Commissioning of the Rare-RI Ring at RIKEN RI Beam Factory

kicker, pick-up, dipole, detector

182

Y. Yamaguchi, Y. Abe
RIKEN, Saitama, Japan
F. Suzaki, M. Wakasugi
RIKEN Nishina Center, Wako, Japan

The Rare-RI Ring (R3) is an isochronous storage ring to measure masses of short-lived rare nuclei by using a TOF method*. The expected precision of the measured mass will be of the order of ppm. A commissioning run using a 78Kr beam was performed in June 2015 and basic performances of R3 were verified. We succeeded in injecting a particle, which was randomly produced from a DC beam from cyclotrons, into the R3 individually** with a fast kicker system***, and in extracting the particle from the R3 1 ms after the injection. We measured TOF of the 78Kr particles between the entrance and the exit of the R3 to check the isochronism. Through the first-order adjustment with trim-coils imbedded on the dipole magnets of the R3, the isochronism on the 10-ppm order was achieved for the momentum spread of ±0.2 %. Higher-order adjustment employed in future will lead us to the isochronism on the order of ppm. In addition, we confirmed that a resonance-type Schottky pick-up successfully acquired the revolution frequency information of one particle in a storage mode. In this conference, the technical aspects of the R3 and prospects from the results of the beam commissioning will be discussed.
* A. Ozawa, et al., Prog. Theor. Exp. Phys. 2012, 03C009
** I. Meshkov, et. al., Proceedings of EPAC 2004, Lucerne, Switzerland.
*** Y. Yamaguchi, et al., Proceedings of STORI'14, in press

Slides FRYAUD01 [16.252 MB]

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