A sharp gas-bremsstrahlung beam capable of testing electromagnetic calorimeters

T. Matsumura, Y. Asano, R. Chiba, T. Hashimoto, A. Miura, H. Shimizu, Y. Tajima, H. Y. Yoshida

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A sharp gas-bremsstrahlung beam with an energy up to 8 GeV is available at insertion device (ID) beamlines at SPring-8. As a practical use of the beam, a test experiment for a 3 × 3 PWO calorimeter has been performed at an ID beamline, BL11XU, to measure the position of the incident gas-bremsstrahlung beam impinging on the calorimeter. The obtained position resolution is sqrt(((2.76 ± 0.02) / sqrt(E))2 + (0.30 ± 0.04)2) mm, E in GeV, at the center of the calorimeter, which is consistent with the result previously obtained with a low-energy electron beam. Despite limited beam-energy information, the pencil-like photon beam generated on ID beamlines works well for a measurement of the position resolution of electromagnetic calorimeters.

Original languageEnglish
Pages (from-to)489-496
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2
Publication statusPublished - 2007 Nov 21
Externally publishedYes


  • Calorimeter
  • Lead tungstate
  • Photon beam
  • SPring-8

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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