Experiment Proposal - opera - Infn

12 The Collaboration
12.1 Structure
The Collaboration has increased since the Progress Report [6] with groups from Beijing, Berlin, Bologna,
Hagen, Padova, Rostock, Shandong, Strasbourg and Zagreb.
An organisational structure has been set up with the main aim of coordinating the work towards the
realisation of the Proposal. The Collaboration Board is the decision making body of OPERA and includes
one representative per Institution. A Triumvirate composed by K. Niwa, J.P. Repellin and P. Strolin
acts as steering body. A. Ereditato acts as Contact Person and J.P. Fabre as Technical Coordinator. The
scientific and technical activities are coordinated by Working Groups (WG) each with a few Organisers
and open to all the members of the Collaboration. A Physics Coordination Group includes the WG
Organisers and the members of the Triumvirate.
The organisational structure for the realisation of the experiment will be established in the forthcoming
months.
12.2 Contributions to the experiment
The realisation of the experiment requires the construction of the detector and of its installation at Gran
Sasso, as well as the setting-up of scanning laboratories of adequate capacity for the demanding task of
quasi-online readout of the emulsion films from extracted bricks and for the precision analysis of candidate
events.
The foreseen contributions from the participating groups extend to all detector elements as shown
in Table 38. Some more groups may join the experiment. A more detailed sharing of the construction
responsibilities among groups will be established after approval of the respective Institutions and Funding
Agencies, following the approval of the experiment.
In addition, an investment is required on emulsion scanning. The readout of the extracted bricks
requires the realisation of dedicated laboratories, equipped with S-UTS or equivalent scanning systems
presently being developed. One of these laboratories will be situated in Japan and at least one will be
in Europe. The precision scanning of candidate events will be carried out in all emulsion laboratories of
the Collaboration.
Several groups of the Collaboration have already experience in readout and analysis of emulsion data
and have laboratories equipped with automatic and semi-automatic scanning systems. Other groups
intend or are considering to undertake such activities in the forthcoming years as a contribution to
OPERA. A list of all groups is given in Table 39.
All groups of the Collaboration will participate in the global analysis of the events, including data
from electronic detectors and emulsion data.
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