Speaker
C. A. Santos
(INFN, Sezione di Trieste, Trieste, Italy)
Description
We report about the development status of large area gaseous single photon detectors based on Thick Gaseous Electron Multipliers (THGEMs) for RICH applications. The R&D programme includes: characterization of THGEM structures of multiple active areas; study of the aspects related to single photon detection; optimization of front-end electronics; engineering towards large area detectors; evolution from triple-layer THGEM configurations to hybrid architectures comprising THGEMs and Micromegas. The most recent achievements within this R&D programme consist of the following 3 topics: First, assembly and study of hybrid photon detectors with active areas of 300 mm x 300 mm, where THGEMs act as CsI support and pre-amplification stage, and Micromegas as a multiplication stage. This configuration was successfully operated in laboratory conditions and at a CERN PS T10 test beam, achieving effective gains in the order of 10^5 and good time resolution (7 ns); Second, gain and thickness characterization of 300 mm x 600 mm single layer THGEMs; Third, investigation of the detector performance when coupled to APV25 Front-End chips, resulting in noise levels lower than 1000 electrons and single photon detection efficiencies higher than 90%.
The status of the R&D programme and the recent progresses are presented, as well as prospects of future 600 mm x 600 mm active area hybrid detectors envisaging the upgrade of COMPASS RICH-1 at CERN in 2016.
Primary authors
A. Bressan
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
A. Maggiora
(INFN, Sezione di Torino, Torino, Italy)
A. Martin
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
B. Gobbo
(INFN, Sezione di Trieste, Trieste, Italy)
C. A. Santos
(INFN, Sezione di Trieste, Trieste, Italy)
D. Panzieri
(INFN, Sezione di Torino and University of East Piemonte, Alessandria, Italy)
F. A. Pereira
(3N – Physics Department, University of Aveiro, Aveiro, Portugal)
F. Bradamante
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
F. Herrmann
(Universität Freiburg, Physikalisches Institut, Freiburg, Germany)
F. Sozzi
(INFN, Sezione di Trieste, Trieste, Italy)
F. Tessarotto
(INFN, Sezione di Trieste, Trieste, Italy)
G. Menon
(INFN, Sezione di Trieste, Trieste, Italy)
G. Sbrizzai
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
H. Fischer
(Universität Freiburg, Physikalisches Institut, Freiburg, Germany)
J. F. C. A Veloso
(I3N – Physics Department, University of Aveiro, Aveiro, Portugal)
J. Novy
(Charles University, Prague, Czech Republic and JINR, Dubna, Russia)
K. Königsmann
(Universität Freiburg, Physikalisches Institut, Freiburg, Germany)
K. Novakova
(INFN, Sezione di Trieste, Trieste, Italy and Technical University of Liberec, Liberec, Czech Republic)
L. Steiger
(INFN, Sezione di Trieste and Technical University of Liberec, Liberec, Czech Republic)
M. Alexeev
(INFN, Sezione di Torino and University of Torino, Torino, Italy)
M. Büchele
(Universität Freiburg, Physikalisches Institut, Freiburg, Germany)
M. Chiosso
(INFN, Sezione di Torino and University of Torino, Torino, Italy)
M. Finger
(Charles University, Prague, Czech Republic and JINR, Dubna, Russia)
M. Finger Jr.
(Charles University, Prague, Czech Republic and JINR, Dubna, Russia)
M. Giorgi
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
M. Gregori
(INFN, Sezione di Trieste, Trieste, Italy)
M. Slunecka
(Charles University, Prague, Czech Republic and JINR, Dubna, Russia)
M. Sulc
(Technical University of Liberec, Liberec, Czech Republic)
N. Makke
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
O. Denisov
(INFN, Sezione di Torino, Torino, Italy)
P. Ciliberti
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
P. Schiavon
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
R. Birsa
(INFN, Sezione di Trieste, Trieste, Italy)
S. DallaTorre
(INFN, Sezione di Trieste, Trieste, Italy)
S. Dasgupta
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
S. Levorato
(INFN, Sezione di Trieste, Trieste, Italy)
S. Schopferer
(Universität Freiburg, Physikalisches Institut, Freiburg, Germany)
S. Takekawa
(INFN, Sezione di Torino and Unversity of Torino, Torino, Italy)
V. Duic
(INFN, Sezione di Trieste and University of Trieste, Trieste, Italy)
