Title :
Recent investigations of cascaded GEM and MHSP detectors
Author :
Chechik, R. ; Breskin, A. ; Guedes, G.P. ; Mormann, D. ; Maia, J.M. ; 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 (GEMs) and cascaded GEMs with microhole and strip plate (MHSP) multiplier as a final amplification stage. We discuss the factors governing the operation of these fast radiation-imaging detectors, which have single-electron 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 ultraviolet-to-visible spectral range as well as X-ray and neutron imaging.
Keywords :
X-ray detection; X-ray imaging; electron multiplier detectors; gamma-ray detection; ionisation chambers; neutron detection; position sensitive particle detectors; semiconductor counters; MHSP detectors; X-ray imaging; cascaded GEM; cascaded gas electron multipliers; fast radiation-imaging detectors; final amplification stage; gaseous photon detectors; ion feedback; ion-backflow secondary effects; ion-induced secondary effects; microhole and strip plate; neutron imaging; photon imaging; single-electron sensitivity; ultraviolet-to-visible spectral range; Electron multipliers; Instruments; Neutrons; Optical imaging; Physics; Radiation detectors; Radiation imaging; Strips; X-ray detection; X-ray imaging;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.835628
