Discharge Protection and Ageing of Micromegas Pixel Detectors
- Aarts, A.A.
- Blanco Carballo, V.M.
- Chefdeville, M.A.
- Colas, P.
- Dunand, S.
- Fransen, M.
- van der Graaf, H.
- Giomataris, Y.
- Hartjes, F.
- Koffeman, G.
- Melai, J.
- Peek, H.
- Riegler, W.
- Salm, Cora
- Schmitz, Jurriaan
- Smits, Sander M.
- Timmermans, J.
- Timmermans, J.
- Visschers, J.L.
- Wyrsch, N.
Publication date
October 2006
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
GridPix is a gas-filled detector in which a Micromegas is combined with a CMOS pixel chip. The GridPix detector, originally developed for the readout of TPCs, can be applied as X-ray imaging device. With a drift gap of only one mm, GridPix could be well applied as radiation hard, low power, (and therefore) low-mass vertex (track) detector. A procedure to construct a Micromegas onto a Si wafer, using chip production technology (‘wafer post processing’), has been developed. A method to protect the CMOS anode pixel chip against discharges has been studied. An ageing test of a Micromegas chamber has been carried out, after verifying the chamber’s proportionality at a very high dose rat
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