COOL2013 - List of Authors (Franzke, B. J.)

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]

THPM1HA01

The Low Energy Storage Ring CRYRING@ESR

189

F. Herfurth, A. Bräuning-Demian, W. Enders, B. J. Franzke, O.K. Kester, M. Lestinsky, Yu.A. Litvinov, M. Steck, T. Stöhlker, G. Vorobjev
GSI, Darmstadt, Germany
H. Danared
ESS, Lund, Sweden
M. Engström, A. Källberg, A. Simonsson, Ö. Skeppstedt
MSL, Stockholm, Sweden
A. Heinz
Chalmers University of Technology, Chalmers Tekniska Högskola, Gothenburg, Sweden
D. Reistad
Intégro Utbildnings AB, Sigtuna, Sweden
J. Sjöholm
FYSIKUM, AlbaNova, Stockholm University, Stockholm, Sweden

The Swedish in-kind contribution to the FAIR facility in Darmstadt, the heavy-ion storage ring CRYRING, has been transported to Darmstadt recently. Instead of warehousing until installation at the Facility for Antiproton and Ion Research, FAIR, the immediate installation behind the existing Experimental Storage Ring, ESR, has been proposed. CRYRING can decelerate, cool and store heavy, highly charged ions that come from the ESR down to a few 100 keV/nucleon. It provides a high performance electron cooler in combination with a gas jet target and thus opens up a very attractive physics program as a natural extension of the ESR, which can only operate down to about 4 MeV/nucleon. CRYRING@ESR also provides beams of low charged ions independently on the GSI accelerator. All this makes CRYRING@ESR the perfect machine for FAIR related tests of diagnostics, software and concepts, and atomic physics experiments with heavy, highly charged ions stored at low energy. Perspectives are also opened up for low-energy nuclear physics investigations. CRYRING@ESR is a first step towards atomic physics with low-energy, highly charged ions at FAIR as planned within the SPARC and APPA collaborations.

Slides THPM1HA01 [4.611 MB]

FRAM2HA05

Dieter Möhl and GSI/FAIR

B. J. Franzke
GSI, Darmstadt, Germany

The talk shall gratefully remind us of nearly 15 years of close scientific and personal relation between Dieter and the storage ring group of GSI, especially during the conceptual design phase of FAIR, where Dieter was member of the machine advisory committee (MAC) for the project. His various theoretical and experimental studies of stochastic cooling and novel beam accumulation concepts were of outmost importance for the technical design of the CR and RESR storage rings.

Slides FRAM2HA05 [1.008 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]

THPM1HA01	The Low Energy Storage Ring CRYRING@ESR	189
	F. Herfurth, A. Bräuning-Demian, W. Enders, B. J. Franzke, O.K. Kester, M. Lestinsky, Yu.A. Litvinov, M. Steck, T. Stöhlker, G. Vorobjev GSI, Darmstadt, Germany H. Danared ESS, Lund, Sweden M. Engström, A. Källberg, A. Simonsson, Ö. Skeppstedt MSL, Stockholm, Sweden A. Heinz Chalmers University of Technology, Chalmers Tekniska Högskola, Gothenburg, Sweden D. Reistad Intégro Utbildnings AB, Sigtuna, Sweden J. Sjöholm FYSIKUM, AlbaNova, Stockholm University, Stockholm, Sweden
	The Swedish in-kind contribution to the FAIR facility in Darmstadt, the heavy-ion storage ring CRYRING, has been transported to Darmstadt recently. Instead of warehousing until installation at the Facility for Antiproton and Ion Research, FAIR, the immediate installation behind the existing Experimental Storage Ring, ESR, has been proposed. CRYRING can decelerate, cool and store heavy, highly charged ions that come from the ESR down to a few 100 keV/nucleon. It provides a high performance electron cooler in combination with a gas jet target and thus opens up a very attractive physics program as a natural extension of the ESR, which can only operate down to about 4 MeV/nucleon. CRYRING@ESR also provides beams of low charged ions independently on the GSI accelerator. All this makes CRYRING@ESR the perfect machine for FAIR related tests of diagnostics, software and concepts, and atomic physics experiments with heavy, highly charged ions stored at low energy. Perspectives are also opened up for low-energy nuclear physics investigations. CRYRING@ESR is a first step towards atomic physics with low-energy, highly charged ions at FAIR as planned within the SPARC and APPA collaborations.
	Slides THPM1HA01 [4.611 MB]

FRAM2HA05	Dieter Möhl and GSI/FAIR
	B. J. Franzke GSI, Darmstadt, Germany
	The talk shall gratefully remind us of nearly 15 years of close scientific and personal relation between Dieter and the storage ring group of GSI, especially during the conceptual design phase of FAIR, where Dieter was member of the machine advisory committee (MAC) for the project. His various theoretical and experimental studies of stochastic cooling and novel beam accumulation concepts were of outmost importance for the technical design of the CR and RESR storage rings.
	Slides FRAM2HA05 [1.008 MB]