A Micromegas-based telescope for muon tomography: The WatTo experiment

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• 作者：S. Bouteille^a ; D. Attié ; ^b ; P. Baron^b ; D. Calvet^b ; P. Magnier^b ; I. Mandjavidze^b ; S. Procureur^a ; ^{Sebastien.Procureur@cea.fr" class="auth_mail" title="E-mail the corresponding author} ; M. Riallot^b ; M. Winkler^b
• 关键词：Genetic multiplexing ; Micro Pattern Gaseous Detectors ; MPGD ; Micromegas ; Muon Tomography ; Volcanology ; Muography
• 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 October 2016
• 年：2016
• 卷：834
• 期：Complete
• 页码：223-228
• 全文大小：1116 K

文摘

This paper reports about the first Micromegas-based telescope built for applications in muon tomography. The telescope consists of four, 50×50 cm² resistive multiplexed Micromegas with a 2D layout and a self-triggering electronics based on the Dream chip. Thanks to the multiplexing, the four detectors were readout with a single Front-End Unit. The high voltages were provided by a dedicated card using low consumption CAEN miniaturized modules. A nano-PC (Hummingboard) ensured the HV control and monitoring coupled with a temperature feedback as well as the data acquisition and storage. The overall consumption of the instrument yielded 30 W only, i.e. the equivalent of a standard bulb. The telescope was operated outside during 3.5 months to image the water tower of the CEA-Saclay research center, including a 1.5-month campaign with solar panels. The development of autonomous, low consumption muon telescopes with unprecedented accuracy opens new applications in imaging as well as in the field of muon metrology.