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Hyperfine Interactions

, Volume 213, Issue 1–3, pp 199–204 | Cite as

Beam profile monitor for annihilation cross section measurements of antiprotons at 100 keV

  • Koichi Todoroki
  • Maurizio Corradini
  • Ryugo S. Hayano
  • Takumi Kobayashi
  • Marco Leali
  • Evandro Lodi Rizzini
  • Valerio Mascagna
  • Anna Soter
  • Luca Venturelli
  • Nicola Zurlo
  • Masaki Hori
Article
  • 69 Downloads

Abstract

The ASACUSA (the Atomic Spectroscopy And Collisions Using Slow Antiprotons) collaboration is planning to measure the cross sections of antiproton annihilations at kinetic energy 100 keV on targets of various mass numbers (C, Ni, Sn, and Pt) using the Antiproton Decelerator (AD) of CERN. No previous measurement exists in this region where the A-dependence of the cross section is expected to deviate from the A\(^{\frac{2}{3}}\) (Batty et al, Nucl Phys A 689:721, 2001) as reported by the Obelix collaboration. A beam profile monitor based on secondary electron emission with a grid of electrode pads fabricated on an FR4-type glass-epoxy circuit board was developed for this measurement. The advantage of this kind of detector is that it is simple, lightweight, and low cost. It was used to measure the spatial profile of 100-ns-long beam pulses containing > 6 × 104 antiprotons with an active area of 40 mm × 40 mm and a spatial resolution of 4 mm.

Keywords

Beam profile monitor Antiproton annihilation cross section ASACUSA Secondary electron emission 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Koichi Todoroki
    • 1
  • Maurizio Corradini
    • 2
  • Ryugo S. Hayano
    • 1
  • Takumi Kobayashi
    • 1
  • Marco Leali
    • 2
  • Evandro Lodi Rizzini
    • 2
  • Valerio Mascagna
    • 2
  • Anna Soter
    • 3
  • Luca Venturelli
    • 2
  • Nicola Zurlo
    • 2
  • Masaki Hori
    • 3
  1. 1.Department of PhysicsUniversity of TokyoBunkyo-kuJapan
  2. 2.University of Brescia and INFNBresciaItaly
  3. 3.Max-Planck-Institute for Quantum OpticsGarchingGermany

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