Twingrid: a wafer post-processed multistage micro patterned gaseous detector


Bilevych, Y. and Blanco Carballo, V.M. and Chefdeville, M.A. and Fransen, M. and Graaf, H. van der and Salm, C. and Schmitz, J. and Timmermans, J. (2009) Twingrid: a wafer post-processed multistage micro patterned gaseous detector. Nuclear instruments and methods in physics research. Section A: Accelerators, spectrometers, detectors and associated equipment, 610 (3). pp. 644-648. ISSN 0168-9002

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Abstract:This paper presents a new multistage Micro Patterned Gaseous Detector (MPGD) made by wafer post-processing. The device consists of a double metal grid supported by SU-8 structures on top of a Timepix chip. The detector has been operated with He/iC4H10 and Ar/iC4H10 gas mixtures. Cosmic rays as well as 55Fe decay events have been recorded using the Timepix chip in 2D and 3D readout modes. The detector can be operated like a Micromegas (high field close to the chip) or like a GEM (amplification stage followed by a low extraction field). This approach for manufacturing GEM-like radiation imaging detectors allows for precise dimensional control and considerable geometrical design freedom.
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Copyright:© 2009 Elsevier
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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