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On the geometrical design of integrated Micromegas detectors

✍ Scribed by V.M. Blanco Carballo; C. Salm; S.M. Smits; J. Schmitz; M. Chefdeville; H. van der Graaf; J. Timmermans; J.L. Visschers

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
596 KB
Volume
576
Category
Article
ISSN
0168-9002

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✦ Synopsis

This paper presents the operational characteristics of several integrated Micromegas detectors. These detectors called InGrids are made by means of micro-electronic fabrication techniques. These techniques allow a large variety of detector geometry to be made and studied. Gain, gain homogeneity and energy resolution were measured for various amplification gap sizes, hole pitches and hole diameters in Argon/Isobutane. Gain measurements as a function of gap thickness are compared to the Rose and Korff formula and a model of the detector gain. Our model uses electric field maps and MAGBOLTZ calculated amplification coefficients.

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