COOL2015 - List of Keywords (antiproton)

Paper	Title	Other Keywords	Page
MOYAUD03	Stochastic Cooling System for HESR - Theoretical and Simulation Studies	pick-up, kicker, ion, target	20
	H. Stockhorst, B. Lorentz, R. Maier, D. Prasuhn, R. Stassen FZJ, Jülich, Germany T. Katayama Nihon University, Narashino, Chiba, Japan
	The High-Energy Storage Ring (HESR) is part of the upcoming International Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt. The HESR dedicates to the field of high-energy antiproton physics to explore the research areas of charmonium spectroscopy, hadronic structure, and quark-gluon dynamics with high-quality beams over a broad momentum range from 1.5 to 15 GeV/c. The facility provides the combination of powerful phase-space cooled antiproton beams and internal Pellet or gas jet targets to achieve the requirements of the experiment PANDA in terms of beam quality and luminosity. Recently, the feasibility of the HESR has been investigated for the application of cooled heavy ion beams with the special emphasis on the experimental program of the SPARC collaboration at FAIR. In this contribution an outline of the Fokker-Planck approach and particle tracking for momentum cooling assisted by a barrier bucket cavity with an internal target is given. A comparison of the filter and filter-less TOF cooling techniques including beam feedback is presented. Simulation and experimental studies at COSY to verify the predictions of the cooling theory complete the contribution.
	Slides MOYAUD03 [4.508 MB]
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MOYAUD04	Stochastic Cooling Developments for the Collector Ring at FAIR	pick-up, kicker, ion, cryogenics	25
	C. Dimopoulou, D. Barker, R.M. Böhm, R. Hettrich, W. Maier, C. Peschke, A. Stuhl, S. Wunderlich GSI, Darmstadt, Germany L. Thorndahl CERN, Geneva, Switzerland
	A Status report on the ongoing developments for the demanding stochastic cooling system of the Collector Ring is given. The system operates in the frequency band 1-2 GHz, it has to provide fast 3D cooling of antiproton, rare isotope and stable heavy ion beams. The main challenges are (i) the cooling of antiprotons by means of cryogenic movable pick-up electrodes and (ii) the fast two-stage cooling (pre-cooling by the Palmer method, followed by the notch filter method) of the hot rare isotope beams. Progress in designing, testing and integrating the hardware is discussed.
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TUPF01	Cooling for a High Luminosity 100 TeV Proton Antiproton Collider	collider, luminosity, proton, quadrupole	97
	S.J. Oliveros, J.G. Acosta, L.M. Cremaldi, D.J. Summers UMiss, University, Mississippi, USA
	A 10³⁴ luminosity 100 TeV proton-antiproton collider is explored. The cross section for many high mass states is 10x higher in p-pbar than p-p collisions. Antiquarks for production can come directly from an antiproton rather than indirectly from gluon splitting. The higher cross sections reduce the synchrotron radiation in superconducting magnets and the vacuum system, because lower beam currents can produce the same rare event rates. Events are also more central, allowing a shorter detector with less space between quadrupole triplets and a smaller beta twiss for higher luminosity. To keep up with the antiproton burn rate, a Fermilab-like antiproton source would be adapted to disperse the beam into 12 different momentum channels, using electrostatic septa, to increase antiproton momentum capture 12x. At Fermilab, antiprotons were stochastically cooled in one debuncher and one accumulator ring. Because the stochastic cooling time scales as the number of particles, 12 independent cooling systems would be used, each one with one debuncher/momentum equalizer ring and two accumulator rings. One electron cooling ring would follow the stochastic cooling rings. Finally antiprotons in the collider ring would be recycled during runs without leaving the collider ring, by joining them to new bunches with snap bunch coalescence and longitudinal synchrotron damping.
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Paper

Title

Other Keywords

Page

MOYAUD03

Stochastic Cooling System for HESR - Theoretical and Simulation Studies

pick-up, kicker, ion, target

20

H. Stockhorst, B. Lorentz, R. Maier, D. Prasuhn, R. Stassen
FZJ, Jülich, Germany
T. Katayama
Nihon University, Narashino, Chiba, Japan

The High-Energy Storage Ring (HESR) is part of the upcoming International Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt. The HESR dedicates to the field of high-energy antiproton physics to explore the research areas of charmonium spectroscopy, hadronic structure, and quark-gluon dynamics with high-quality beams over a broad momentum range from 1.5 to 15 GeV/c. The facility provides the combination of powerful phase-space cooled antiproton beams and internal Pellet or gas jet targets to achieve the requirements of the experiment PANDA in terms of beam quality and luminosity. Recently, the feasibility of the HESR has been investigated for the application of cooled heavy ion beams with the special emphasis on the experimental program of the SPARC collaboration at FAIR. In this contribution an outline of the Fokker-Planck approach and particle tracking for momentum cooling assisted by a barrier bucket cavity with an internal target is given. A comparison of the filter and filter-less TOF cooling techniques including beam feedback is presented. Simulation and experimental studies at COSY to verify the predictions of the cooling theory complete the contribution.

Slides MOYAUD03 [4.508 MB]

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

MOYAUD04

Stochastic Cooling Developments for the Collector Ring at FAIR

pick-up, kicker, ion, cryogenics

25

C. Dimopoulou, D. Barker, R.M. Böhm, R. Hettrich, W. Maier, C. Peschke, A. Stuhl, S. Wunderlich
GSI, Darmstadt, Germany
L. Thorndahl
CERN, Geneva, Switzerland

A Status report on the ongoing developments for the demanding stochastic cooling system of the Collector Ring is given. The system operates in the frequency band 1-2 GHz, it has to provide fast 3D cooling of antiproton, rare isotope and stable heavy ion beams. The main challenges are (i) the cooling of antiprotons by means of cryogenic movable pick-up electrodes and (ii) the fast two-stage cooling (pre-cooling by the Palmer method, followed by the notch filter method) of the hot rare isotope beams. Progress in designing, testing and integrating the hardware is discussed.

Export •

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

TUPF01

Cooling for a High Luminosity 100 TeV Proton Antiproton Collider

collider, luminosity, proton, quadrupole

97

S.J. Oliveros, J.G. Acosta, L.M. Cremaldi, D.J. Summers
UMiss, University, Mississippi, USA

A 10³⁴ luminosity 100 TeV proton-antiproton collider is explored. The cross section for many high mass states is 10x higher in p-pbar than p-p collisions. Antiquarks for production can come directly from an antiproton rather than indirectly from gluon splitting. The higher cross sections reduce the synchrotron radiation in superconducting magnets and the vacuum system, because lower beam currents can produce the same rare event rates. Events are also more central, allowing a shorter detector with less space between quadrupole triplets and a smaller beta twiss for higher luminosity. To keep up with the antiproton burn rate, a Fermilab-like antiproton source would be adapted to disperse the beam into 12 different momentum channels, using electrostatic septa, to increase antiproton momentum capture 12x. At Fermilab, antiprotons were stochastically cooled in one debuncher and one accumulator ring. Because the stochastic cooling time scales as the number of particles, 12 independent cooling systems would be used, each one with one debuncher/momentum equalizer ring and two accumulator rings. One electron cooling ring would follow the stochastic cooling rings. Finally antiprotons in the collider ring would be recycled during runs without leaving the collider ring, by joining them to new bunches with snap bunch coalescence and longitudinal synchrotron damping.

Export •

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