Development of a low-cost fast-timing microchannel plate photodetector

详细信息    查看全文

• 作者：Junqi Xie ; ^{jxie@anl.gov" class="auth_mail" title="E-mail the corresponding author} ; Karen Byrum ; ^{byrum@anl.gov" class="auth_mail" title="E-mail the corresponding author} ; Marcel Demarteau ; Edward May ; Robert Wagner ; Dean Walters ; Jingbo Wang ; Lei Xia ; Huyue Zhao
• 关键词：Microchannel plate ; MCP ; Photodetector ; Time resolution ; Spatial resolution ; Quantum efficiency
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 July 2016
• 年：2016
• 卷：824
• 期：Complete
• 页码：159-161
• 全文大小：1065 K

文摘

We report on the design, fabrication and characterization of a prototype class="mathmlsrc">title="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0168900215013868&_mathId=si0002.gif&_user=111111111&_pii=S0168900215013868&_rdoc=1&_issn=01689002&md5=a75bbe513e4a9e7acbea5f404a313087">class="imgLazyJSB inlineImage" height="12" width="60" alt="View the MathML source" style="margin-top: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0168900215013868-si0002.gif">class="mathContainer hidden">class="mathCode">$6\times 6{\mathrm{cm}}^2$ microchannel plate photodetector with precise fast-timing measurement capability. The whole assembly is made of low cost glass materials with a bialkali photocathode top window. All components are hermetically sealed in vacuum. The prototype photodetector exhibits time resolution of 65 ps and 16 ps at single-photoelectron and multi-photoelectron levels, respectively. The spatial resolution reaches 0.54 mm for multi-photoelectron measurements. The bialkali photocathode exhibits a maximum quantum efficiency exceeding 20% with a uniformity of class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0168900215013868&_mathId=si0003.gif&_user=111111111&_pii=S0168900215013868&_rdoc=1&_issn=01689002&md5=5e0e4210dfc26ba4bff6018a62196124" title="Click to view the MathML source">±40%class="mathContainer hidden">class="mathCode">$\pm 40\%$.