Investigation of ion backflow in bulk micromegas detectors

  title={Investigation of ion backflow in bulk micromegas detectors},
  author={Pintu Bhattacharya and Deb Sankar Bhattacharya and S. Mukhopadhyay and Sourangshu Bhattacharya and Nayana Majumdar and Sandip Sarkar and Pilar Marco Colas and David Atti{\'e}},
  journal={Journal of Instrumentation},
  pages={P09017 - P09017}
The operation of gas detectors is often limited by secondary effects, originating from avalanche-induced photons and ions. Ion backflow is one of the effects limiting the operation of a gas detector at high flux, by giving rise to space charge which disturbs the electric field locally. For the Micromegas detector, a large fraction of the secondary positive ions created in the avalanche can be stopped at the micro-mesh. The present work involves measurements of the ion backflow fraction (using… 

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aFacility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA bFlorida Institute of Technology, Melbourne, FL 32901, USA cINFN Trieste, Via A. Valerio, 2 34127 Trieste,



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