Stochastic cooling and extraction at COSY

Maier, R.; Bechstedt, U.; Dietrich, J.; Henn, K.; Lehrach, A.; Lorenitz, B.; Prasuhn, D.; Schnase, A.; Schneider, H.; Stassen, R.; Stockhorst, H.; To¨lle, R.
June 2000
AIP Conference Proceedings;2000, Vol. 512 Issue 1, p243
Academic Journal
COSY is a cooler synchrotron and storage ring delivering high precision proton beams with momenta between 300 MeV/c and 3400 MeV/c for experiments in medium energy physics. Two cooling systems are used. An electron cooler that reaches up to a momentum of 600 MeV/c and a stochastic cooling system that covers the upper momentum range from 1500 to 3400 MeV/c. Horizontal and vertical as well as longitudinal stochastic cooling by the filter method are successfully applied for internal experiments with cluster targets. Third order resonant extraction and stochastic extraction are used to serve external experiments. A nearly ideal rectangular spill of 5 to more than 50 s has been achieved with the stochastic feeding system. In addition, a polarized beam was successfully extracted. © 2000 American Institute of Physics.


Related Articles

  • High-Density and High-Intensity Beams at the CERN PS. Cappi, R.; Giovannozzi, M.; Martini, M.; Métral, E.; Métral, G.; Muller, A.-S.; Steerenberg, R. // AIP Conference Proceedings;2002, Vol. 642 Issue 1, p59 

    The production of high-density and high-intensity beams has been a constant activity at the CERN Proton Synchrotron (PS) since many years. This paper is a status report of the present situation, including also a discussion of ongoing studies and future activities.

  • 3 GeV RCS at the JKJ. Noda, Fumiaki // AIP Conference Proceedings;2002, Vol. 642 Issue 1, p53 

    3GeV RCS at the JAERI-KEK joint project (JKJ) is a rapid cycling synchrotron designed for high intensity proton beam. The designed output power is 1MW with a repetition rate of 25 Hz. In this paper, the outline of 3GeV RCS, key issues to achieve the goal, R&D status and time schedule of...

  • Polarized proton beam development at COSY with EDDA as a fast internal polarimeter. Hinterberger, F. // AIP Conference Proceedings;2001, Vol. 570 Issue 1, p731 

    Polarized protons in the Cooler Synchrotron COSY encounter five imperfection and nine intrinsic depolarizing resonances during the acceleration from 300 to 3300 MeV/c. When crossing imperfection resonances vertical correction dipoles are excited in order to enhance the average vertical...

  • Review of Polarized Proton Beam Acceleration at KEK-PS in the 1980’s. Ohmori, C.; Hiramatsu, S.; Sato, H.; Toyama, T. // AIP Conference Proceedings;2003, Vol. 667 Issue 1, p50 

    A polarized proton beam was accelerated at the KEK-PS in the late 1980's. This report will review the activities for the polarized beam acceleration in both the 500 MeV booster and the 12 GeV Main Ring. Some depolarization resonances were passed using the spin-flip techniques. The effects on the...

  • Spill uniformity measurements for a raster scanned proton beam. Coutrakon, G.; Ghebremedhin, A.; Koss, P.; Evans, K.; Taylor, D.; Jenkins, G. // AIP Conference Proceedings;2000, Vol. 546 Issue 1, p251 

    The method of scanning a proton beam across a target region for radiation therapy requires a uniform beam intensity throughout the beam spill time. Achieving uniform intensity using feedback to an air core quadrapole in the Loma Linda synchrotron accelerator is described in this paper. Frequency...

  • Multiturn Extraction Based on Trapping in Stable Islands. Cappi, R.; Gilardoni, S.; Giovannozzi, M.; Martini, M.; Métral, E.; Scaramuzzi, P.; Steerenberg, R.; Müller, A.-S. // AIP Conference Proceedings;2005, Vol. 773 Issue 1, p296 

    For some applications an intermediate extraction mode between fast (one turn) and slow (several thousand turns) is needed. This is the case of the five-turn extraction used to transfer the proton beam from the CERN Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS). Unavoidable losses...

  • PRESENT STATUS AND FUTURE PROG RAMS OF THE n_TOF EXPERIMENT. Chiaveri, E.; Calviani, M.; Vlachoudis, V.; Weiß, C.; Andriamonje, S.; Andrzejewski, J.; Audouin, L.; Avrigeanu, V.; Barbagallo, M.; Bécares, V.; Bečvář, F.; Belloni, F.; Berthoumieux, E.; Billowes, J.; Boccone, V.; Brugger, M.; Calviño1, F.; Cano-Ott, D.; Carrapiço, C.; Cerutti, F. // EPJ Web of Conferences;2012, Issue 21, p1 

    The neutron time-of-flight facility n_TOF at CERN, Switzerland, operational since 2001, delivers neutrons using the Proton Synchrotron (PS) 20 GeV/c proton beam impinging on a lead spallation target. The facility combines a very high instantaneous neutron flux, an excellent time of flight...

  • Open and Hidden Beauty Production at HERA-B. Mevius, M. // AIP Conference Proceedings;2005, Vol. 756 Issue 1, p363 

    HERA-B is a fixed target experiment that used the 920 GeV proton beam of HERA at DESY on targets of different materials. The results of the analysis of 150M dilepton triggered events on b-quark production are presented. The preliminary results for the b&bmacr; cross section...

  • The TRIC Experiment: A P-even Time-Reversal Invariance Test at COSY. Eversheim, P. D. // AIP Conference Proceedings;2005, Vol. 796 Issue 1, p40 

    At the cooler synchrotron COSY at Jülich a novel (P-even, T-odd) true null test was proposed, that is supposed to measure the time-reversal invariance sensitive observable, the total cross-section correlation Ay,xz, to an accuracy of 10-6. This observable is measured in a transmission...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics