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| MOPAB067 |
Response of Scintillating Screens to High Charge Density Electron Beam |
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- F. Miyahara, S. Kishimoto, M. Satoh, Y. Seimiya, T. Suwada
KEK, Ibaraki, Japan
- M. Koshimizu
Tohoku University, School of Science, Sendai, Japan
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Inorganic scintillating screens are very useful tool to measure transverse profile of charged particle beams. The cerium-doped yttrium:aluminum:garnet (YAG:Ce) crystal scintillator is used in many accelerating facilities. The scintillating screen shows good resolution comparable to that of OTR screen. However, response to high charge density electron beam, more than 10 nC per square millimeter, has not been clarified. In KEK e+/e− injector linac, the charge areal density (σ) will exceed 25 nC per square mm. Thus, beam tests has been performed on YAG:Ce, LYSO, and BGO crystals for 1.5 GeV, 1 nC/bunch electron beam at the linac. Saturation of the luminescence which causes degradation of the resolution has been observed above 1 nC per square mm in those crystals. We will report the response of the scintillating screens to high charge density electron beam and discuss the degradation of the resolution due to the saturation of the light yield.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB067
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