COOL2015 - List of Keywords (detector)

Paper	Title	Other Keywords	Page
MOPF06	Quantification of the Electron Plasma in TItan's Cooler Penning Trap	electron, ion, plasma, TRIUMF	39
	B.A. Kootte, B. Barquest, U. Chowdhury, J. Even, M. Good, A.A. Kwiatkowski, D. Lascar, K.G. Leach, A. Lennarz, D.A. Short TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada M. Alanssari Universität Muenster, Physikalisches Institut, Muenster, Germany C. Andreoiu SFU, Burnaby, BC, Canada J. Bale, J. Dilling, A. Finlay, A.A. Gallant, E. Leistenschneider UBC & TRIUMF, Vancouver, British Columbia, Canada D. Frekers Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, Germany G. Gwinner University of Manitoba, Manitoba, Canada R. Klawitter Heidelberg University, Physics Institute, Heidelberg, Germany T.T. Li UW/Physics, Waterloo, Ontario, Canada A.J. Mayer University of Calgary, NW Calgary, Alberta, Canada R. Schupp MPI, Muenchen, Germany
	Funding: Funded by Natural Sciences and Engineering Research Council of Canada (NSERC) Modern rare isotope facilities provide beams of shortlived radionuclides primarily for studies in the field of nuclear structure, nuclear astrophysics, and low energy particle physics. At these facilities, many activities such as re-acceleration, improvement of resolving power, and precision experimental measurements require charge breeding of ions. However, the charge breeding process can increase the energy spread of an ion bunch, adversely affecting the experiment. A Cooler Penning Trap (CPET) is being developed to address such an energy spread by means of sympathetic electron cooling of the Highly Charged Ion bunches to . 1 eV/q. Recent work has focused on developing a strategy to effectively detect the trapped electron plasma without obstructing the passage of ions through the beamline. The first offline tests demonstrate the ability to trap and detect more than 10⁸ electrons. This was achieved by using a novel wire mesh detector as a diagnostic tool for the electrons. * E.M. Burbidge et al, Rev Mod Phys, 29 547 (1957) V.V. Simon et al, Phys Rev C, 85 064308 (2012) * Z. Ke et al, Hyp Int, 173 103 (2006) **** U. Chowdhury et al, AIP Conf Proc, 1640 120 (2015)
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TUWAUD01	Status, Recent Results and Prospect of the International Muon Ionization Cooling Experiment (MICE)	alignment, solenoid, emittance, electron	67
	C.T. Rogers STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
	Muon accelerators have been proposed as a means to produce intense, high energy muon beams for particle physics. Designs call for beam cooling to provide suitable beams. Existing cooling schemes cannot operate on time scales that are competitive with the muon lifetime. Ionisation cooling has been proposed as a means to achieve sufficient cooling, but it has never been demonstrated practically. In the Muon Ionisation Cooling Experiment (MICE), based at the Rutherford Appleton Laboratory, ionisation cooling will be demonstrated. MICE Step IV is currently in progress and will be completed in 2016. Muons are brought onto an absorber, resulting in a reduction of momentum and hence reduction of normalised transverse emittance. The full Demonstration of Ionisation Cooling will take place in 2017. An extra magnet module and RF cavities will be installed, as in a cell of a cooling channel. This will enable demonstration of reduction of emittance and subsequent re-acceleration, both critical components for a realistic ionisation cooling channel.
	Slides TUWAUD01 [3.280 MB]
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FRYAUD01	Commissioning of the Rare-RI Ring at RIKEN RI Beam Factory	kicker, injection, pick-up, dipole	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

MOPF06

Quantification of the Electron Plasma in TItan's Cooler Penning Trap

electron, ion, plasma, TRIUMF

39

B.A. Kootte, B. Barquest, U. Chowdhury, J. Even, M. Good, A.A. Kwiatkowski, D. Lascar, K.G. Leach, A. Lennarz, D.A. Short
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
M. Alanssari
Universität Muenster, Physikalisches Institut, Muenster, Germany
C. Andreoiu
SFU, Burnaby, BC, Canada
J. Bale, J. Dilling, A. Finlay, A.A. Gallant, E. Leistenschneider
UBC & TRIUMF, Vancouver, British Columbia, Canada
D. Frekers
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, Germany
G. Gwinner
University of Manitoba, Manitoba, Canada
R. Klawitter
Heidelberg University, Physics Institute, Heidelberg, Germany
T.T. Li
UW/Physics, Waterloo, Ontario, Canada
A.J. Mayer
University of Calgary, NW Calgary, Alberta, Canada
R. Schupp
MPI, Muenchen, Germany

Funding: Funded by Natural Sciences and Engineering Research Council of Canada (NSERC)
Modern rare isotope facilities provide beams of shortlived radionuclides primarily for studies in the field of nuclear structure, nuclear astrophysics, and low energy particle physics. At these facilities, many activities such as re-acceleration, improvement of resolving power, and precision experimental measurements require charge breeding of ions. However, the charge breeding process can increase the energy spread of an ion bunch, adversely affecting the experiment. A Cooler Penning Trap (CPET) is being developed to address such an energy spread by means of sympathetic electron cooling of the Highly Charged Ion bunches to . 1 eV/q. Recent work has focused on developing a strategy to effectively detect the trapped electron plasma without obstructing the passage of ions through the beamline. The first offline tests demonstrate the ability to trap and detect more than 10⁸ electrons. This was achieved by using a novel wire mesh detector as a diagnostic tool for the electrons.
* E.M. Burbidge et al, Rev Mod Phys, 29 547 (1957)
** V.V. Simon et al, Phys Rev C, 85 064308 (2012)
*** Z. Ke et al, Hyp Int, 173 103 (2006)
**** U. Chowdhury et al, AIP Conf Proc, 1640 120 (2015)

Export •

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

TUWAUD01

Status, Recent Results and Prospect of the International Muon Ionization Cooling Experiment (MICE)

alignment, solenoid, emittance, electron

67

C.T. Rogers
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom

Muon accelerators have been proposed as a means to produce intense, high energy muon beams for particle physics. Designs call for beam cooling to provide suitable beams. Existing cooling schemes cannot operate on time scales that are competitive with the muon lifetime. Ionisation cooling has been proposed as a means to achieve sufficient cooling, but it has never been demonstrated practically. In the Muon Ionisation Cooling Experiment (MICE), based at the Rutherford Appleton Laboratory, ionisation cooling will be demonstrated. MICE Step IV is currently in progress and will be completed in 2016. Muons are brought onto an absorber, resulting in a reduction of momentum and hence reduction of normalised transverse emittance. The full Demonstration of Ionisation Cooling will take place in 2017. An extra magnet module and RF cavities will be installed, as in a cell of a cooling channel. This will enable demonstration of reduction of emittance and subsequent re-acceleration, both critical components for a realistic ionisation cooling channel.

Slides TUWAUD01 [3.280 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, injection, pick-up, dipole

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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