A UV sensitive integrated micromegas with timepix readout


Melai, Joost and Breskin, Amos and Cortesi, Marco and Bilevych, Yevgen and Fransen, Martin and Graaf, Harry van der and Visschers, Jan and Blanco Carballo, Víctor and Salm, Cora and Schmitz, Jurriaan (2010) A UV sensitive integrated micromegas with timepix readout. Nuclear instruments and methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 628 . pp. 133-137. ISSN 0168-9002

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Abstract:This article presents a detector system consisting of three components, a CMOS imaging array, a gaseous-detector structure with a Micromegas layout, and a UV-photon sensitive CsI reflective photocathode. All three elements have been monolithically integrated using simple post-processing steps. The Micromegas structure and the CMOS imaging chip are not impacted by the CsI deposition. The detector operated reliably in He/isobutene mixtures and attained charge gains with single photons up to a level of 6x104. The Timepix CMOS array permitted high resolution imaging of single UV-photons. The system has an MTF50 of 0.4lp/pixel which corresponds to approximately 7lp/mm.
Item Type:Article
Copyright:© 2010 Elsevier
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/75919
Official URL:http://dx.doi.org/10.1016/j.nima.2010.06.301
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