Experimental Test of Momentum Cooling Model Predictions at COSY and Conclusions for WASA and HESR

Stockhorst, H.; Stassen, R.; Thorndahl, L.; Katayama, T.

Contribution to a conference proceedings/Contribution to a book

Experimental Test of Momentum Cooling Model Predictions at COSY and Conclusions for WASA and HESR

Stockhorst, H.FZJ* ; Stassen, R.FZJ* ; Katayama, T. ; Thorndahl, L.

2007

Proceedings of the Symposium on Meson Physics at COSY-11 and WASA at COSY. - 2007. - (AIP Conference Proceedings ; 950). - 978-0-7354-0464-9. - S. 239 [10.1063/1.2819042]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10496 doi:10.1063/1.2819042

Abstract: The High-Energy Storage Ring (HESR) of the future International Facility for Antiproton and Ion Research (FAIR) at GSI in Darmstadt is planned as an anti-proton cooler ring in the momentum range from 1.5 to 15 GeV/c. An important and challenging feature of the new facility is the combination of highly dense phase space cooled beams with internal targets. A detailed numerical and analytical approach to the Fokker-Planck equation for longitudinal filter cooling including the beam - target interaction has been carried out to demonstrate the stochastic cooling capability. To gain confidence in the model predictions a series of experimental stochastic cooling studies with the internal target ANKE at COSY have been carried out. A remarkable agreement between model and experiment was achieved. On this basis longitudinal stochastic cooling simulations were performed to predict the possibilities and limits of cooling when the newly installed WASA Pellet-target is operated.

Keyword(s): talk: Cracow 2007/06/17 ; target: internal ; phase space: longitudinal ; Juelich COSY PS ; Fokker-Planck equation: numerical calculations ; storage ring: stochastic coupling ; beam dynamics