An improved Shashlyk calorimeter

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• 作者：G.S. Atoian ; G.I. Britvich ; S.K. Chernichenko ; S. Dhawan ; V.V. Issakov ; O.V. Karavichev ; T.L. Karavicheva ; V.N. Marin ; A.A. Poblaguev ; I.V. Shein ; A.P. Soldatov ; M.E. Zeller
• 关键词：Shashlyk calorimeter ; Scintillator ; WLS fiber ; APD ; WFD ; Monte Carlo simulation
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2008
• 出版时间：11 January 2008
• 年：2008
• 卷：584
• 期：2-3
• 页码：291-303
• 全文大小：1614 K

文摘

Shashlyk electromagnetic calorimeter modules with an energy resolution of about g src=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PXDKX5-1-62/0?wchp=dGLzVzz-zSkWA"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=20 width=106> for g src=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PXDKX5-1-63/0?wchp=dGLzVzz-zSkWA"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=13 width=100> photons have been developed, and a prototype tested. Details of these improved modules, including mechanical construction, selection of wave shifting fibers and photo-detectors, and development of a new scintillator with improved optical and mechanical properties are described. How the modules will perform in a large calorimeter was determined from prototype measurements. The experimentally determined characteristics of the calorimeter prototype show energy resolution of g src=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PXDKX5-1-64/0?wchp=dGLzVzz-zSkWA"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=19 width=311>, time resolution of g src=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PXDKX5-1-65/0?wchp=dGLzVzz-zSkWA"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=19 width=250>, where photon energy E is given in GeV units and g src=""http://www.sciencedirect.com/scidirimg/entities/2295.gif"" alt=""circled plus"" border=0> means a quadratic summation. A punch-through inefficiency of photon detection was measured to be g src=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PXDKX5-1-67/0?wchp=dGLzVzz-zSkWA"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=19 width=207>.