Title :
Recent investigations of cascaded GEM and MHSP detectors
Author :
Chechik, R. ; Breskin, A. ; Guedes, G.P. ; Mormann, D. ; Maia, J. ; Dangendorf, V. ; Vartsky, D. ; dos Santos, J.M.F. ; Veloso, J.F.C.A.
Author_Institution :
Weizmann Inst. of Sci., Rehovot, Israel
Abstract :
We present results from our recent investigations on detectors comprising cascaded gas electron multipliers (GEM) and cascaded GEMS with micro-hole and strip (MHSP) electrodes as a final amplification stage. We discuss the factors governing the operation of these fast radiation-imaging detectors, which have single-charge sensitivity. The issue of ion-backflow and ion-induced secondary effects is discussed in some detail, presenting ways for its suppression. Applications are presented in the fields of photon imaging in the UV-to-visible spectral range as well as x-ray and neutron imaging.
Keywords :
counters; ionisation chambers; cascaded GEM detectors; cascaded MHSP detectors; fast radiation-imaging detectors; final amplification stage; ion-backflow; ion-induced secondary effects; micro-hole and strip electrodes; single-charge sensitivity; Electrodes; Electron multipliers; Neutrons; Optical imaging; Radiation detectors; Solids; Strips; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352096
