Multiple-photon disambiguation on stripline-anode Micro-Channel Plates

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• 作者：Glenn R. Jocher^a ; ^{glenn.jocher@ultralytics.com" class="auth_mail" title="E-mail the corresponding author} ; Matthew J. Wetstein^b ; ^{mwetstein@uchicago.edu" class="auth_mail" title="E-mail the corresponding author} ; Bernhard Adams^e ; ^{badams@incomusa.com" class="auth_mail" title="E-mail the corresponding author} ; Kurtis Nishimura^a ; ^{kurtis.nishimura@ultralytics.com" class="auth_mail" title="E-mail the corresponding author} ; Shawn M. Usman^c ; ^d ; ^{shawn.usman@nga.mil" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Stripline ; Anode ; Micro-Channel Plate (MCP) ; Large Area Picosecond Photo-Detector (LAPPD) ; Photo-electron (PE)
• 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：21 June 2016
• 年：2016
• 卷：822
• 期：Complete
• 页码：25-33
• 全文大小：4831 K

文摘

Large-Area Picosecond Photo-Detectors (LAPPDs) show great potential for expanding the performance envelope of Micro-Channel Plates (MCPs) to areas of up to 20×20 cm and larger. Such scaling introduces new challenges, including how to meet the electronics readout burden of ever larger area MCPs. One solution is to replace the traditional grid anode used for readout with a microwave stripline anode, thus allowing the channel count to scale with MCP width rather than area.

However, stripline anodes introduce new issues not commonly dealt with in grid-anodes, especially as their length increases. One of these issues is the near simultaneous arrival of multiple photons on the detector, creating possible confusion about how to reconstruct their arrival times and positions. We propose a maximum a posteriori solution to the problem and verify its performance in simulated scintillator and water-Cherenkov detectors.