Title :
Discharge Protection and Ageing of Micromegas Pixel Detectors
Author :
Aarts, A.A. ; Carballo, V. M Blanco ; Chefdeville, M. ; Colas, P. ; Dunand, S. ; Fransen, M. ; van der Graaf, H. ; Giomataris, Y. ; Hartjes, F. ; Koffeman, E. ; MelaI, J. ; Peek, H. ; Riegler, W. ; Salm, C. ; Schmitz, J. ; Smits, S.M. ; Timmermans, J. ; V
Author_Institution :
NIKHEF, Amsterdam
fDate :
Oct. 29 2006-Nov. 1 2006
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 rate.
Keywords :
CMOS image sensors; X-ray imaging; anodes; electronics packaging; muons; nuclear materials packaging; position sensitive particle detectors; readout electronics; silicon; wafer-scale integration; 1 mm; CMOS anode pixel chip protection; CMOS pixel chip; GridPix; Micromegas chamber; Micromegas pixel detectors; Si; Si wafer; X-ray imaging device; cosmic muons; detector ageing; detector discharge protection; discharges; drift gap; gas-filled detector; low-mass vertex detector; wafer post processing; Aging; Anodes; CMOS technology; Production; Protection; Radiation detectors; Testing; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.353833
