COOL2013 - List of Authors (Dolinskyy, A.)

Paper

Title

Page

Progress of the Stochastic Cooling System of the Collector Ring

40

C. Dimopoulou, D. Barker, R.M. Böhm, A. Dolinskyy, B. J. Franzke, R. Hettrich, W. Maier, R. Menges, F. Nolden, C. Peschke, P. Petri, M. Steck
GSI, Darmstadt, Germany
L. Thorndahl
CERN, Geneva, Switzerland

An overview of the recent achievements and ongoing developments for the stochastic cooling system of the Collector Ring is given. In focus are the hardware developments as well as the progress in predicting the system performance. 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 isotopes. Recently, a novel code for simulating the cooling process in the time domain has been developed at CERN. First results for the momentum cooling for heavy ions in the CR will be shown in comparison with results obtained in the frequency domain with the Fokker-Planck equation.

Slides TUAM1HA01 [4.320 MB]

TUAM1HA04

Simulation Study of Stochastic Cooling of Heavy Ion Beam at the Collector Ring of FAIR

52

T. Katayama, C. Dimopoulou, A. Dolinskyy, F. Nolden, M. Steck
GSI, Darmstadt, Germany

In the modularized start version of the FAIR project, the New Experimental Storage Ring is not included and therefore the task of the stochastic cooling system at the Collector Ring (CR) has been until now focused on the 3 GeV anti-proton beam. On the other hand, recently the SPARC collaboration has proposed to start the high energy atomic physics experiments in the HESR ring with stable ions, typically a ²³⁸U⁹²⁺ beam, implementing the internal target. Furthermore the future possibility of the nuclear physics experiments with rare isotope beams, typically ¹³²Sn⁵⁰⁺ beam, in the HESR is envisaged. In the present report, the beam dynamics, mainly the longitudinal motion from the front-end (superconducting fragment separator) to the back-end (fast extraction from the CR) are described emphasizing the process of stochastic cooling of the rare isotope beam.

Slides TUAM1HA04 [2.504 MB]

Paper	Title	Page
TUAM1HA01	Progress of the Stochastic Cooling System of the Collector Ring	40
	C. Dimopoulou, D. Barker, R.M. Böhm, A. Dolinskyy, B. J. Franzke, R. Hettrich, W. Maier, R. Menges, F. Nolden, C. Peschke, P. Petri, M. Steck GSI, Darmstadt, Germany L. Thorndahl CERN, Geneva, Switzerland
	An overview of the recent achievements and ongoing developments for the stochastic cooling system of the Collector Ring is given. In focus are the hardware developments as well as the progress in predicting the system performance. 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 isotopes. Recently, a novel code for simulating the cooling process in the time domain has been developed at CERN. First results for the momentum cooling for heavy ions in the CR will be shown in comparison with results obtained in the frequency domain with the Fokker-Planck equation.
	Slides TUAM1HA01 [4.320 MB]

TUAM1HA04	Simulation Study of Stochastic Cooling of Heavy Ion Beam at the Collector Ring of FAIR	52
	T. Katayama, C. Dimopoulou, A. Dolinskyy, F. Nolden, M. Steck GSI, Darmstadt, Germany
	In the modularized start version of the FAIR project, the New Experimental Storage Ring is not included and therefore the task of the stochastic cooling system at the Collector Ring (CR) has been until now focused on the 3 GeV anti-proton beam. On the other hand, recently the SPARC collaboration has proposed to start the high energy atomic physics experiments in the HESR ring with stable ions, typically a ²³⁸U⁹²⁺ beam, implementing the internal target. Furthermore the future possibility of the nuclear physics experiments with rare isotope beams, typically ¹³²Sn⁵⁰⁺ beam, in the HESR is envisaged. In the present report, the beam dynamics, mainly the longitudinal motion from the front-end (superconducting fragment separator) to the back-end (fast extraction from the CR) are described emphasizing the process of stochastic cooling of the rare isotope beam.
	Slides TUAM1HA04 [2.504 MB]