TY - JOUR
T1 - An integrated readout system for drift chambers: the application of monolithic CMOS pixel sensors as segmented direct anode
AU - Campbell, M.
AU - Heijne, E.H.M.
AU - Llopart, X.
AU - Chefdeville, M.A.
AU - Colas, P.
AU - Giomataris, Y.
AU - Colijn, A.P.
AU - Fornaini, A.
AU - van der Graaf, H.
AU - Kluit, P.
AU - Timmermans, J.
AU - Visschers, J.L.
AU - Schmitz, J.
N1 - Conference code: 9
PY - 2006
Y1 - 2006
N2 - A small TPC has been read out by means of a MediPix2 readout chip as direct anode. A Micromegas foil was placed 50 μm above the chip, and electron multiplication occurred in the gap. With a He/Isobutane 80/20 mixture, gas multiplication factors up to tens of thousands were achieved, resulting in an efficiency for detecting single electrons of better than 90%. We recorded many frames containing 2D images with tracks from cosmic muons. Along these tracks, electron clusters were observed, as well as δ-rays.
AB - A small TPC has been read out by means of a MediPix2 readout chip as direct anode. A Micromegas foil was placed 50 μm above the chip, and electron multiplication occurred in the gap. With a He/Isobutane 80/20 mixture, gas multiplication factors up to tens of thousands were achieved, resulting in an efficiency for detecting single electrons of better than 90%. We recorded many frames containing 2D images with tracks from cosmic muons. Along these tracks, electron clusters were observed, as well as δ-rays.
KW - SC-RID: Radiation Imaging detectors
U2 - 10.1016/j.nuclphysbps.2004.10.089
DO - 10.1016/j.nuclphysbps.2004.10.089
M3 - Conference article
SN - 0920-5632
VL - 150
SP - 200
EP - 203
JO - Nuclear Physics B - proceedings supplements
JF - Nuclear Physics B - proceedings supplements
T2 - 9th Topical Seminar on Innovative Particle and Radiation Detectors 2004
Y2 - 23 May 2004 through 26 May 2004
ER -