Relatore
Sig.
Edoardo Bossini
(university of Siena-INFN Pisa)
Descrizione
We describe the results and status of our R\&D on timing detectors for the TOTEM Collaboration. Physics program of the TOTEM experiment will require precise time of flight detectors with a resolution better than $50~ps$, to be installed in the TOTEM Vertical Roman Pots (RPs).
To achieve such result we exploited ultra pure sCVD diamond technology, which provides fast, low noise and radiation hard devices. Moreover, since each RP can host 4 diamond detection plane, timing constraints are relaxed by a factor 2.
On the other side diamond output signal from $8~TeV$ proton is very low ($\sim2fC/particle$) and extreme care must thus be placed on the development of dedicated front-end electronic.\\\\
Test-beams performed so far will be presented, describing set-ups and results obtained. At first off-the-shelf devices were used but unsatisfactory results push us to design a new detector. The front-end electronics, one of the critical point of the design, will be presented and discussed.
Different offline analysis techniques indicate how different processing algorithm will affect detector resolution. Digitization of the signal with a fast sampler has already been tested.
Together with timing performance also detector efficiency has been studied during the latest test-beams. Very satisfactory results have been obtained, both for timing and efficiency.
Collaboration
On behalf of the TOTEM Collaboration
Autore principale
Sig.
Edoardo Bossini
(university of Siena-INFN Pisa)
Coautore
Dr.
Georgiev Vjaceslav
(University of West Bohemia)
Dr.
Josef Kopal
(INstitute of Physics of the Academy of Sciences of the Czech Republic)
Dr.
Linhart
(University of West Bohemia)
Dr.
Mirko Berretti
(CERN-INFN Pisa)
Nicola Minafra
(CERN-INFN Bari)
