GEMGrid: a wafer post-processed GEM-like radiation detector

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Title: GEMGrid: a wafer post-processed GEM-like radiation detector
Authors: Blanco Carballo, V.M.1 v.m.blancocarballo@utwente.nl, Bilevych, Y.2, Chefdeville, M.2, Fransen, M.2, van der Graaf, H.2, Salm, C.1, Schmitz, J.1, Timmermans, J.2
Source: Nuclear Instruments & Methods in Physics Research Section A. Sep2009, Vol. 608 Issue 1, p86-91. 6p.
Subjects: Nuclear counters, Semiconductor wafers, Ionizing radiation, Microfabrication, Band gaps, Iron isotopes, Radioactive decay, Complementary metal oxide semiconductors
Abstract: Abstract: This paper presents a new wafer post-processed micropatterned gaseous radiation detector called GEMGrid. The device consists of a GEM-like structure fabricated with SU-8 photoresist directly on top of a Timepix chip with zero gap distance. The detector characteristics have been studied in several gas mixtures. The device is capable of tracking minimum ionizing particles and exhibits good energy resolution on 55Fe decays. We further show a strongly improved mechanical robustness of these GEM-like structures as compared to a pillar-supported integrated Micromegas. [Copyright &y& Elsevier]
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Database: Engineering Source
Description
Abstract:Abstract: This paper presents a new wafer post-processed micropatterned gaseous radiation detector called GEMGrid. The device consists of a GEM-like structure fabricated with SU-8 photoresist directly on top of a Timepix chip with zero gap distance. The detector characteristics have been studied in several gas mixtures. The device is capable of tracking minimum ionizing particles and exhibits good energy resolution on 55Fe decays. We further show a strongly improved mechanical robustness of these GEM-like structures as compared to a pillar-supported integrated Micromegas. [Copyright &y& Elsevier]
ISSN:01689002
DOI:10.1016/j.nima.2009.06.023