Author: Welsch, C.P.
Paper Title Page
MOP185 Development of Longitudinal Beam Profile Diagnostics within DITANET 435
 
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by the EU under contract PITN-GA-2008-215080.
The exact determination of the time structure of ever shorter bunches in accelerators and light sources such as for example the X-FEL, the ILC or CLIC is of high importance for the successful operation of these next-generation machines. It is also a key to the optimization of existing scientific infrastructures. The exact measurement of the time structure poses a number of challenges to the beam diagnostics system: The monitors should be non-destructive, easy to maintain and provide time resolutions down to the femtosecond regime. Several DITANET partners are active in this field. This contribution gives examples of the network’s research activities in this area with a focus on the LHC longitudinal density monitor, beam profile monitoring using electro-optics techniques and the exploitation of diffraction radiation for non-invasive diagnostics.
 
 
MOP186 Low Energy Beam Diagnostics Developments within DITANET 438
 
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by the EU under contract PITN-GA-2008-215080.
Low energetic ion beam are very attractive for a large number of fundamental physics experiments. The development of beam instrumentation for such beams poses many challenges due to the very low currents down to only a few thousands of particles per second and the resulting very low signal levels. Within DITANET, several institutions aim at pushing low energy, low intensity diagnostics beyond the present state-of-the-art. This contribution gives examples from the progress across the DITANET network in this research area.
On behalf of the DITANET consortium.
 
 
WEP208 Design of an Antiproton Recycler Ring 1879
 
  • A.I. Papash, G.A. Karamysheva, A.V. Smirnov
    MPI-K, Heidelberg, Germany
  • O. Karamyshev
    JINR/DLNP, Dubna, Moscow region, Russia
  • H. Knudsen
    Aarhus University, Aarhus, Denmark
  • A.I. Papash
    JINR, Dubna, Moscow Region, Russia
  • M.R.F. Siggel-King
    The University of Liverpool, Liverpool, United Kingdom
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
 
  Funding: Work supported by the EU under contract PITN-GA-2008-215080, the Helmholtz Association of National Research Centers (HGF) under contract VH-NG-328, and the GSI Helmholtz Centre for Heavy Ion Research.
At present, the only place in the world where experiments utilising low-energy antiprotons can be performed is the AD at CERN. The MUSASHI trap, as part of the ASACUSA collaboration, enables access to antiproton energies in the order of a few hundreds of eV. Whilst MUSASHI produces cutting-edge research, the available beam quality and luminosity is not sufficient for collision experiments on the level of differential cross sections. A small electrostatic ring, and associated electrostatic acceleration section, is being designed and developed by the QUASAR Group. It will serve as a prototype for the future ultra-low energy storage ring (USR), to be integrated at the facility for low-energy antiproton and ion research (FLAIR). This small AD recycler ring will be unique due to its combination of size, electrostatic nature and energy of the circulating particles. In this contribution, the design of the ring is described and details about the injection section are given.
 
 
THP012 Development of Imaging Techniques for Medical Accelerators in the QUASAR Group 2160
 
  • C.P. Welsch, T. Cybulski
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • R. Boll, S. Sellner, S. Tegami
    MPI-K, Heidelberg, Germany
  • M. Holzscheiter
    UNM, Albuquerque, New Mexico, USA
  • C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by the EU under contract PIIF-GA-2009-234814, PITN-GA-2008-215080 and DFG under WE3565/5.
Ions offer an increased precision in radiotherapy due to their specific depth-dose properties. This precision can only be fully exploited if exact knowledge of the particle beam properties, as well as the exact range of the particles in the inhomogeneous target, is available. The QUASAR Group has addressed the key issues in a number of different ways: Using a monolithic active pixel sensor, designed for dead time-free operation, we have developed a beam monitoring system capable of monitoring pulsed and continuous beams at typical therapeutic energies and intensities in real time during patient treatment; using a non-intrusive detector system based on the VELO detector, we will measure variations in beam properties without intersecting the beam core altogether; using liquid ionization chambers, we aim at obtaining information on the biological quality of the beam; using a simple set-up based on a silicon pixel detector, developed for the ALICE experiment, we have demonstrated the feasibility of detecting the distal edge of the Bragg peak in antiproton beams by detecting the pions resulting from pbar-nucleon annihilations. This paper gives an overview of these studies.
 
 
MOP186 Low Energy Beam Diagnostics Developments within DITANET 438
 
  • C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by the EU under contract PITN-GA-2008-215080.
Low energetic ion beam are very attractive for a large number of fundamental physics experiments. The development of beam instrumentation for such beams poses many challenges due to the very low currents down to only a few thousands of particles per second and the resulting very low signal levels. Within DITANET, several institutions aim at pushing low energy, low intensity diagnostics beyond the present state-of-the-art. This contribution gives examples from the progress across the DITANET network in this research area.
On behalf of the DITANET consortium.
 
 
THP012 Development of Imaging Techniques for Medical Accelerators in the QUASAR Group 2160
 
  • C.P. Welsch, T. Cybulski
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • R. Boll, S. Sellner, S. Tegami
    MPI-K, Heidelberg, Germany
  • M. Holzscheiter
    UNM, Albuquerque, New Mexico, USA
  • C.P. Welsch
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by the EU under contract PIIF-GA-2009-234814, PITN-GA-2008-215080 and DFG under WE3565/5.
Ions offer an increased precision in radiotherapy due to their specific depth-dose properties. This precision can only be fully exploited if exact knowledge of the particle beam properties, as well as the exact range of the particles in the inhomogeneous target, is available. The QUASAR Group has addressed the key issues in a number of different ways: Using a monolithic active pixel sensor, designed for dead time-free operation, we have developed a beam monitoring system capable of monitoring pulsed and continuous beams at typical therapeutic energies and intensities in real time during patient treatment; using a non-intrusive detector system based on the VELO detector, we will measure variations in beam properties without intersecting the beam core altogether; using liquid ionization chambers, we aim at obtaining information on the biological quality of the beam; using a simple set-up based on a silicon pixel detector, developed for the ALICE experiment, we have demonstrated the feasibility of detecting the distal edge of the Bragg peak in antiproton beams by detecting the pions resulting from pbar-nucleon annihilations. This paper gives an overview of these studies.