Beam studies of SAD-150 heavy crystal PWO calorimeter, small angle multiphoton detector of GAMS-4π spectrometer

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• 作者：Binon ; F.G. ; Blick ; A.M. ; Dolgopolov ; A.V. ; Donskov ; S.V. ; Inaba ; S. ; Kachanov ; V.A. ; Khaustov ; G.V. ; et. al.
• 关键词：Small angle detector ; PWO crystal cells ; High-energy particles
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：1999
• 出版时间：June, 1999
• 年：1999
• 卷：428
• 期：2-3
• 页码：292-298
• 全文大小：240 K

文摘

Small Angle Detector (SAD-150) is a PbWO₄ heavy crystal electromagnetic calorimeter with high energy and coordinate resolution for multiphoton events. It has been included in the GAMS-4π setup and calibrated in muon and electron beams. Test measurements of forward emitted π⁰ and η in the π⁻ p charge exchange reactions with 32.5 GeV/c π⁻ at the IHEP proton synchrotron are reported. The measured mass resolution in the η region agrees with the design value. SAD-150 performance does not deteriorate with π⁻ intensities up to 10⁶ π⁻/s per cell.