TwinGrid: A wafer post-processed multistage Micro Patterned Gaseous Detector

Authors
  • Y. Bilevych
  • V.M. Blanco Carballo
  • M. Chefdeville
  • M. Fransen
  • H. van der Graaf
  • C. Salm
  • J. Schmitz
  • J. Timmermans
Publication date 2009
Journal Nuclear Instruments & Methods in Physics Research Section A - Accelerators Spectrometers Detectors and Associated Equipment
Volume | Issue number 610 | 3
Pages (from-to) 644-648
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
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/iC(4)H(10) and Ar/iC(4)H(10) gas mixtures. Cosmic rays as well as Fe-55 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.
Document type Article
Published at https://doi.org/10.1016/j.nima.2009.09.054
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