Author: Kester, O.K.
Paper Title Page
WEIC05
Future Accelerators for Secondary Beam Production  
 
  • O.K. Kester
    IAP, Frankfurt am Main, Germany
  • O.K. Kester, J. Stadlmann
    GSI, Darmstadt, Germany
 
  In recent years Radioactive Ion Beam facilities such as FAIR and FRIB have increasingly become drivers for advanced technical developments in the area of superconducting magnets and resonators, radiation detectors, radiation resistant materials and electronics and high power target. This talk discusses anticipated progress in these technologies and identifies links between RIB development and other large, ongoing efforts in particle accelerators for industrial and basic research applications.  
slides icon Slides WEIC05 [10.629 MB]  
 
WEPPD031 A Transverse Electron Target for Heavy Ion Storage Rings 2573
 
  • S. Geyer, O. Meusel
    IAP, Frankfurt am Main, Germany
  • O.K. Kester
    GSI, Darmstadt, Germany
 
  Funding: supported by HIC for FAIR
A transverse electron target is a well suited concept for storage rings to investigate electron-ion interactions processes relevant for heavy ion accelerators. In comparison with an internal gas target, it promises a better energy resolution but still has the advantage, in contrast to an electron cooler, of access to the interaction region for photon and electron spectroscopy under large solid angles. The new electron target is suited for the use under the UHV requirements of a storage ring and realizes an open geometry for spectroscopy. A simple design based on electrostatic fields was chosen. The sheet beam application provides a higher perveance limit and a smaller potential depression than a cylindrical gun arrangement. The adjustable electron energy ranges between several 10eV and a few keV. The setup will be installed applying the so-called animated beam technique. The electron target is dedicated to the NESR at the new FAIR facility. First measurements are planned at a test bench and subsequent tests at the Frankfurt Low Energy Storage Ring (FLSR) are envisaged. An overview of the progress in the development of the transverse electron target will be given.
 
 
WEPPR003 Longitudinal Dynamics of Intense Heavy-Ion Bunches in SIS-100 2937
 
  • M. Mehler, O. Boine-Frankenheim, O. Chorniy, O.K. Kester
    GSI, Darmstadt, Germany
 
  In the SIS-100 highest heavy-ion intensities have to be accelerated to deliver beam to the FAIR experiments. In the projected SIS-100 synchrotron the heavy ion bunches will be strongly affected by the longitudinal space charge force. Due to the limited RF bucket area all mechanisms which might cause longitudinal phase space dilution must be understood and controlled. Space charge effects, like the reduction in the RF voltage and the loss of Landau damping, have already been part of elaborate studies. It has been shown that cavity beam loading can deform the flattened bunch shape in the dual rf bucket. Among the different counter measures an inductive insert has been proposed in order to partially compensate the longitudinal space charge impedance. Optimized settings for the difference between the two rf phases in a dual rf bucket might be an option to reduce the effect of beam loading. In this contribution we will analyse the matched bunch distribution for SIS-100 parameters in single and dual rf buckets. Analytical and numerical studies of the interplay of longitudinal space charge, cavity beam loading and an inductive insert will be presented.  
 
WEPPP016 De-neutralization of Laser Produced Proton Pulse in a Strong Solenoidal Magnetic Field 2755
 
  • M. Droba, O.K. Kester, O. Meusel, C. Wiesner
    IAP, Frankfurt am Main, Germany
 
  Laser generated proton pulses of ten to several ten MeV produced in PHELIX-laser facility at GSI Darmstadt poses some unique characteristics. The first systematic exploration of the interface between proton pulse generation via the TNSA mechanism and conventional accelerator technology is within the scope of the LIGHT (Laser Ion Generation, Handling and Transport) project. One of the main tasks is to study the beam dynamics in intense B-fields, especially in context of early de-neutralization and space charge effects. The 3D numerical simulations with co-moving electrons and up to 107 macroparticles were performed to investigate the de-neutralization process in the focusing magnetic solenoid. Importance of the first focusing element and influence on beam parameters will be addressed. Results of the 3D simulation model will be presented and discussed.