A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Papash, A.I.

Paper Title Page
MOPD021 Low Energy Ion Injector at KACST 720
 
  • M.O.A. El Ghazaly, A.A. Almukhem, A.M. Mandil
    KACST, Riyadh
  • A.I. Papash
    JINR, Dubna, Moscow Region
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire
 
 

At the National Centre for Mathematics and Physics (NCMP), at the King Abdulaziz City for Science and Technology (KACST), Saudi Arabia, a versatile low energy ion injector has been developed in collaboration with the QUASAR group. This project will allow for a broad experimental program with most different kinds of ions both in single pass setups, but also with ions stored in a fixed-energy electrostatic storage ring. In this contribution, the design of the injector is presented. It was designed for beams with energies of up to 30 kV/q and will allow for switching between different ion sources from e.g. duoplasmatron to electrospray ion sources and to thus provide the users with a wide range of different beams. The mechanical construction of the injector is summarized and the status of its assembly at KACST presented.

 
MOPD022 Design of a Combined Fast and Slow Extraction for the Ultra-low Energy Storage Ring (USR) 723
 
  • G.A. Karamysheva, A.I. Papash
    JINR, Dubna, Moscow Region
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire
 
 

The Ultra-Low energy Storage Ring (USR) within the future Facility for Low-energy Antiproton and Ion Research (FLAIR) will decelerate antiproton beams from 300 keV to energies of only 20 keV. Cooled beams will then be extracted and provided to external experiments. The large variety of planned experiments requires a highly flexible longitudinal time structure of the extracted bunches, ranging from ultra-short pulses in the nanosecond regime to quasi DC beams. This requires fast as well as slow extraction in order to cover whole range of envisaged beam parameters. A particular challenge was to combine elements for fast and slow extraction in one straight section of this electrostatic ring. In this contribution we present the results of beam dynamic simulations and describe the overall extraction scheme in detail.

 
TUPD014 Simulations of Space Charge Effects in Low Energy Electrostatic Storage Rings 1952
 
  • A.I. Papash
    MPI-K, Heidelberg
  • O.E. Gorda
    GSI, Darmstadt
  • A.I. Papash
    JINR, Dubna, Moscow Region
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire
 
 

Electrostatic storage rings have proven to be invaluable tools for atomic and molecular physics. Due to the mass independence of the electrostatic rigidity, these machines are able to store a wide range of different particles, from light ions to heavy singly charged bio-molecules. However, earlier measurements showed strong space charge limitations; probably linked to non-linear fields that cannot be completely avoided in such machines. The nature of these effects is not fully understood. In this contribution, we present the results from simulating an electrostatic storage ring under consideration of non-linear fields as well as space charge effects using the computer code SCALA.

 
TUPD014 Simulations of Space Charge Effects in Low Energy Electrostatic Storage Rings 1952
 
  • A.I. Papash
    MPI-K, Heidelberg
  • O.E. Gorda
    GSI, Darmstadt
  • A.I. Papash
    JINR, Dubna, Moscow Region
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire
 
 

Electrostatic storage rings have proven to be invaluable tools for atomic and molecular physics. Due to the mass independence of the electrostatic rigidity, these machines are able to store a wide range of different particles, from light ions to heavy singly charged bio-molecules. However, earlier measurements showed strong space charge limitations; probably linked to non-linear fields that cannot be completely avoided in such machines. The nature of these effects is not fully understood. In this contribution, we present the results from simulating an electrostatic storage ring under consideration of non-linear fields as well as space charge effects using the computer code SCALA.