Title :
Charge protection characterisation and drift time resolution improvement for GridPix
Author :
Koppert, W.J.C. ; Fransen, M. ; van Bakel, N. ; van der Graaf, H. ; Hartjes, F. ; Timmermans, J. ; Visser, J. ; Kluit, R. ; Gromov, V. ; Zappon, F. ; Carballo, V. Blanco ; Schmitz, J. ; Bilevych, Y.
Author_Institution :
Nikhef, Amsterdam, Netherlands
Abstract :
A GridPix detector is a gaseous detector capable of detecting single primary electrons from ionising particles. Such a detector consists of a pixel chip as active anode covered with a thin layer of silicon rich silicon nitride (SiRN) for protection against discharges. A layer of 8 μm SiRN, and according recent tests even 4 μm, is sufficient to protect against discharges. The effect of the thickness of the SiRN layer on the operation of a detector has been determined.
Keywords :
anodes; silicon compounds; time projection chambers; GridPix detector; SiN; active anode; charge protection; drift time resolution improvement; gaseous detector; ionising particle; silicon rich silicon nitride; Gain measurement; Semiconductor device measurement; Silicon; GridPix; MPGD; Proton Therapy; TPC; Time walk;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6154686
