Author/Authors :
Alexeev، نويسنده , , M. and Birsa، نويسنده , , R. and Bradamante، نويسنده , , F. and Bressan، نويسنده , , A. and Büchele، نويسنده , , M. and Chiosso، نويسنده , , M. and Ciliberti، نويسنده , , P. and Dalla Torre، نويسنده , , S. and Dasgupta، نويسنده , , S. A. Denisov، نويسنده , , O. and Duic، نويسنده , , V. and Finger، نويسنده , , M. and Finger Jr.، نويسنده , , M. and Fischer، نويسنده , , H. and Giorgi، نويسنده , , M. and Gobbo، نويسنده , , B. and Gregori، نويسنده , , M. and Herrmann، نويسنده , , F. and Kِnigsmann، نويسنده , , K. and Levorato، نويسنده , , S. and Maggiora، نويسنده , , A. and Martin، نويسنده , , A. and Menon، نويسنده , , G. and Novakova، نويسنده , , K. and Novy، نويسنده , , J. and Panzieri، نويسنده , , D. and Pereira، نويسنده , , F.A. and Santos، نويسنده , , C.A. and Sbrizzai، نويسنده , , G. and Schiavon، نويسنده , , P. and Schopferer، نويسنده , , S. and Slunecka، نويسنده , , M. and Sozzi، نويسنده , , F. and Steiger، نويسنده , , L. and Sulc، نويسنده , , M. and Takekawa، نويسنده , , S. and Tessarotto، نويسنده , , F. and Veloso، نويسنده , , J.F.C.A.، نويسنده ,
Abstract :
We are developing large size THick GEM (THGEM)-based detectors of single photons, mainly meant for Cherenkov imaging applications. The R&D programme includes the complete characterisation of the THGEM electron multipliers, the study of the aspects related to the detection of single photons and the engineering towards large size detector prototypes. Our most recent achievements include dedicated studies concerning the ion backflow to the photocathode; relevant progress in the engineering aspects, in particularly related to the production of large-size THGEMs, where the strict correlation between the local gain-value and the local thickness-value has been demonstrated and a 300×300 mm2 active area detector has been successfully operated at the CERN PS T10 test beam; the introduction of a new hybrid detector architecture, offering promising performance, which is formed by a THGEM layer which acts both as photocathode and pre-amplification device, followed by a MICROMEGAS (MM) multiplication stage. We report about the general status of the R&D programme and, in detail, about the recent progress.
