Charter for the SuperBigbite Collaboration (draft 3.1)

Goals 

  The Super Bigbite Spectrometer (SBS) collaboration is a working
group within the Hall A collaboration whose purpose is to ensure the
successful running, analysis, and publication of approved experiments
which will use all or parts of the equipment of SBS.  This
collaboration formulated the original scope and drove the realization
of the DOE-supported SBS program, and this charter formalizes its
structure. This collaboration includes the group of individuals who
initially developed the SBS program, as well as the experiments for
which this hardware is essential The SBS-experiments presently consist
of E12-07-109(GEp), E12-09-016(GEn), E12-09-019(GMn),
E12-09-018(SIDIS) and E12-06-122(A1n).  This collaboration and its
collaboration committee have been formed for a broad, common
scientific endeavor, and should not be confused with any entity named
in the management plan specific to the DOE-supported SBS program.


  This charter recognizes the responsibilities of the individual
groups as outlined in the SBS Research Management Plan. This charter's
purpose is to establish an effective collaboration structure so that
activities within the DOE-related SBS program as well as other
activities related to the SBS experiments can be coordinated
efficiently.  The responsibilities of the SBS collaboration include
the development, construction, installation and calibration of the
components of the SBS and ancillary detectors needed for
SBS-experiments, within the funding limits of the SBS program.  These
responsibilities also include implementation of readout electronics
and data-acquisition hardware as well as software for
data-acquisition, calibration, and analysis.  The collaboration will
share techniques, software, calibrations, and knowledge to support the
rapid and accurate analysis of data and to move experiments forward
towards timely publication. The collaboration also coordinates the
development and construction of the several key "dependencies" of the
SBS program, especially the front GEM tracker (used in the SBS for
GEP-5 experiment and BigBite in other experiments), the polarized He-3
target with convection-driven flow of gas, the Hadron calorimeter
(HCAL-J), and the Gas Cherenkov counter for BigBite.

Membership

  Membership is open to all members of the Hall A collaboration with
some interest in utilizing all or parts of the equipment of the SBS,
and/or participating in the experiments that will.

Governance

  The collaboration will be lead by a Collaboration Committee composed
of one representative of each of the SBS-experiments (selected by the
spokespersons of that experiment) as well as an SBS Program Scientist
and the Hall A leader.  More than one experiment cannot be represented
by the same committee member and the SBS Program Scientist on the
committee cannot represent an experiment.  The Collaboration Committee
will choose one member as chairperson to organize and run meetings of
the Collaboration Committee and to represent the committee.  In the
event the committee cannot choose a chairperson, a member of the
committee will be appointed as chairperson by the SBS Principle
Program Scientist.  The chairperson will serve for a one-year term and
may serve consecutive terms.  If the chairperson becomes unwilling or
unable to serve or is removed as chair by the committee members, a new
chairperson will be chosen, as above.  A chairperson may be removed as
chair by a vote of one more than a simple majority of other committee
members. Experiment representatives on the committee may be changed as
desired by the spokespersons of the experiment they represent.

  The Collaboration Committee will identify tasks which need to be
carried out and will seek volunteers to carry out those which the
committee cannot carry out.  In particular, the committee will
organize collaboration telephone meetings as well as meetings of the
full collaboration at least twice a year to monitor progress and to
help ensure adequate communication between people working on different
aspects of the project.  The committee will also distribute
opportunities for invited talks representing the SBS collaboration
with a goal of distributing them fairly.

Modification of the charter

  Suggested changes in the collaboration's charter must first be
considered for collaboration review by the Collaboration Committee.
If a majority of the committee members endorse review of the change,
it will be circulated to the entire SBS collaboration membership for
review and comment.  At least three weeks will be allowed for
collaboration members to express their opinions to their
representatives.  Final approval of the change then requires a vote of
the Collaboration Committee with at least one more than a simple
majority voting to accept the change.