L Walckiers

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The 8.4 T, 10 m long transverse magnetic field of a twin aperture LHC bending magnet can be utilized as a macroscopic coherent solar axion-to-photon converter. Numerical calculations show that the integrated time of alignment with the Sun would be 33 days/yr with the magnet on a tracking table capable of $5° in the vertical direction and $40° in the(More)
  • Biljana Lakí, S Andriamonje, V Arsov, S Aune, D Autiero, F Avignone +10 others
The CERN Axion Solar Telescope (CAST) is searching for axions produced in the Sun's core by the Primakoff process. CAST is using a decommissioned Large Hadron Collider (LHC) test magnet where axions could be converted back into X-rays with energies up to 10 keV. Analysis of the 2003 data showed no signal above background implying an upper limit for the(More)
  • Berta Beltr´an, S Andriamonje, V Arsov, S Aune, D Autiero, F Avignone +37 others
  • 2005
a Deceased Hypothetical axion-like particles with a two-photon interaction would be produced in the sun by the Primakoff process. In a laboratory magnetic field they would be transformed into X-rays with energies of a few keV. The CAST experiment at CERN is using a decommissioned LHC magnet as an axion helioscope in order to search for these axion-like(More)
  • I G Irastorza, S Andriamonje, E Arik, D Autiero, F Avignone, K Barth +57 others
  • 2002
The CAST experiment is being mounted at CERN. It will make use of a decom-missioned LHC test magnet to look for solar axions through its conversion into photons inside the magnetic field. The magnet has a field of 9 Tesla and length of 10 m and is installed in a platform which allows to move it ±8 • vertically and ±40 • horizontally. According to these(More)
Synchrotron particle accelerators are mainly composed of magnets. Long dipole magnets are employed to bend and to contain the beam within a circular trajectory. Their field quality is usually tested by arrays of rotating coils. Typically the measurements must be affected by low uncertainty (+10-4) and the calibration of the sensing coils, in terms of(More)
An in situ procedure for calibrating equivalent magnetic area and rotation radius of rotating coils is proposed for testing accelerator magnets shorter than the measuring coil. The procedure exploits measurements of magnetic field and mechanical displacement inside a reference quadrupole magnet. In a quadrupole field, an offset between the magnet and coil(More)
We present the results of a search for a high-energy axion emission signal from 7 Li (0.478 MeV) and D(p, γ) 3 He (5.5 MeV) nuclear transitions using a low-background γ-ray calorimeter during Phase I of the CAST experiment. These so-called " hadronic axions " could provide a solution to the long-standing strong-CP problem and can be emitted from the solar(More)
  • Christos Eleftheriadis, S Andriamonje, S Aune, K Barth, A Belov, B Beltrán +29 others
  • 2008
Axions are expected to be produced in the sun via the Primakoff process. They may be detected through the inverse process in the laboratory, under the influence of a strong magnetic field, giving rise to X–rays of energies in the range of a few keV. Such an Axion detector is the CERN Axion Solar Telescope (CAST), collecting data since 2003. Results have(More)
The new axion helioscope at CERN started acquiring data during September of 2002: CAST (Cern Axion Solar Telescope) employs a decommissioned LHC dipole magnet to convert putative solar axions or axion-like particles into detectable photons. The unprecedented dipole magnet intensity and length (9.5 T, 10 m) results in a projected sensitivity that surpasses(More)
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