Ratified by the CLAS Collaboration -- January 10,
1992) (As amended through
The goal of the CLAS Collaboration is to conduct a program of experiments
in Jefferson Lab Hall B, including the construction, maintenance and
operation of the necessary detector hardware and software. In
particular, this encompasses exploitation of the original CEBAF Large
Acceptance Spectrometer (CLAS) and the newer CLAS12 instrumentation.
- Initial complement of full members of the Collaboration as of
Jan.10, 1992 was defined by an appendix to the original charter.
- Jefferson Lab staff physicists whose main responsibility is Hall
B instrumentation are automatically full members of the Collaboration.
- An individual can become a full member of the CLAS Collaboration
based on his/her commitment and contributions to the Hall B
instrumentation, as normally described in a Memorandum of
Understanding and/or Statement of Service.
- Such an individual becomes a full member by a two-thirds vote of
those full members who actually vote in the election (See Article II.E).
- There shall be no limit placed upon the number of times an
individual may be considered for full membership.
A postdoctoral researcher or a graduate student is eligible for term
membership while he/she is working on Hall B instrumentation and/or
- A full collaboration member who supervises a postdoctoral
researcher assigned to work on Hall B instrumentation and/or
experiments may designate him/her as a term member of the CLAS
Collaboration. A full collaboration member who supervises a graduate
student who is assigned a thesis project based on Hall B
instrumentation and/or experiments may designate him/her as a term
member of the CLAS Collaboration.
- Designation as a term member must be submitted to the Chairperson
of the Coordinating Committee in writing and must be renewed
- Any individual recommended for term membership must be approved
by a four-fifths vote of the Coordinating Committee.
- Term members may be authors on CLAS publications after successful
completion of an initial probationary period. The Membership
Committee decides whether a new member has fulfilled a suitable level
of service work for the Collaboration during this period to become
eligible for co-authorship.
(as amended 11-08)
- Term members may be considered for full membership.
Physicists who have an interest in and plan to work on a small
fraction of the Hall B proposals may be recommended for limited
membership by a spokesperson(s) for those particular proposals for
which his/her contribution appears to be crucial.
- Recommendation for limited membership must be in writing and
submitted to the Chairperson of the Coordinating Committee by a
spokesperson for a proposal.
- Any individual recommended for limited membership must be
approved by a four-fifths vote of the Coordinating Committee.
- A limited member will have no voting rights and will be included
as an author only on the papers which result from those proposals for
which he/she has been approved for limited membership
DELETION OF MEMBERS
- A member shall be dropped from the Collaboration if that member
notifies the Chairperson of the Coordinating Committee in writing that
he/she wishes to be removed from the Collaboration.
- The Membership Committee (see Article V.G) is responsible for
reviewing the membership status of members and determining which
members should be considered for deletion (by ballot) from the
- A member considered for deletion (by ballot) shall be notified in
writing by the Chairperson of the Coordinating Committee at least 60
days prior to the ballot.
- A member (full, term, or limited) will be dropped from the
Collaboration if a two-thirds majority of those members who actually
cast a ballot on this individual approves the removal.
- Non-participation for a period of two years in the Collaboration
activities will normally be grounds for deletion.
ELECTION OF MEMBERS
An election of members may include any addition or deletion of members
and any changes between limited, term and full membership.
- Every full member of the Collaboration will
have the right to vote in the election of members.
- Elections for membership will take place at collaboration
- Membership elections will be by secret ballot. A member may
submit a ballot prior to the collaboration meeting by mail or by
- It is the responsibility of the Membership Committee to oversee
- The names of the individuals being considered in membership
elections must be made known to the Collaboration at least 30 days
prior to the election. The announcement must include whether the
individuals are being considered for addition or deletion and whether
they are being considered for full or limited membership.
Notification by mail or electronic mail is considered sufficient.
- The Collaboration has the ultimate authority on all issues
involving the Collaboration on a one-member, one-vote basis.
- Changes in the Collaboration Charter shall require a two-thirds
majority of those full members who actually cast a yes or no vote on
the specific issue.
- Changes in the Collaboration Charter may not be voted on at the
same collaboration meeting at which they are proposed.
- The Coordinating Committee will be responsible for overseeing
ballots to modify the Collaboration Charter.
- All other matters brought to a vote at a regular meeting will be
decided by a majority of those present unless specified otherwise in
- Physics issues and their consequences for Hall B instrumentation
will be discussed in the following Physics Working Groups:
- Hadron Spectroscopy
- Deep Processes
- Physics of Nuclei
- Subsystems of Hall B instrumentation will be designed and their
construction, commissioning, and maintenance will be coordinated by
such Technical Working Groups as may be established by the
Coordinating Committee or the Collaboration at large.
- The Collaboration shall be managed by a Coordinating Committee
consisting of the Chairperson, the Hall B Program Manager, and one
representative of each of the Physics Working Groups. The
coordinating committee shall make decisions regarding major
collaboration issues, in particular: allocation of resources within
the Collaboration, resolution of conflicts in construction and
operation caused by different physics requirements, and scheduling.
- Any matter on which there is more than one dissenting vote shall
be brought to the Collaboration for a vote.
- The Coordinating committee shall also monitor the progress in
design and construction of Hall B instrumentation.
- The Chairperson of the Coordinating Committee shall promptly
inform the members of the Collaboration in writing of all actions
taken by the Coordinating Committee.
- The Chairperson of the Coordinating Committee shall be the
collaboration spokesperson and the principal contact to the CEBAF
directorate for the CLAS Collaboration. He/she will have overall
responsibility for assuring smooth operation of the Collaboration. The
Chairperson shall be elected to a term of TWO years. In the absence of
extenuating circumstances, it is expected but not required that the
incumbent not be renominated. Apart from this strong preference
against contiguous terms, there is no lifetime limit on service in
- The Hall B Program Manager is appointed by the CEBAF management.
He/she will have responsibility for the overall organization and
management of the construction and operation of the Hall B
- (Technical Committee removed July '03. Lettering retained
to preserve later cross reference links in .html
remaining members of the Coordinating Committee (excluding the
Chairperson of the Coordinating Committee and the Hall B Program
Manager) shall be elected for terms of one year, with no limitation
- The members of
the Coordinating Committee must be full members of the Collaboration.
- The Membership Committee will consist of
one full collaboration member from each institution involved in the
Collaboration. An institution is intended to mean Jefferson Lab,
another national laboratory, or a university, and not individual
groups, centers or institutes within these entities. The Membership
Committee is responsible for managing the collaboration membership,
supervising the nomination and election of the Chairperson of the
Coordinating Committee, and determining the authorship of
- The representative from a given institution is determined at the
discretion of the full collaboration members at that institution. The
representative for each institution will notify the Chairperson of the
Coordinating Committee of his/her selection. If an institution fails
to appoint a representative, the Coordinating Committee will appoint a
representative for that institution.
- The Membership Committee will be headed by a chairperson who is
selected annually by the Membership Committee.
- The Membership Committee must meet at least once a year.
- The Membership Committee will review the status of members and
make recommendations to the Collaboration concerning the addition and
deletion of members.
- The Membership Committee will determine the limited and term
members who are eligible for authorship on each publication.
- The Membership Committee will nominate suitable candidates for
the Chairperson of the Coordinating Committee and notify the
members of the Collaboration of the list of nominees at least 30
days prior to the election of the Chairperson of the Coordinating
- The Membership Committee will supervise the election of the
Chairperson of the Coordinating Committee.
- The responsibilities of the Membership Committee do not affect
the rights granted to full members of the Collaboration.
Specifically, any full member of the Collaboration may nominate
candidates for Chairperson of the Coordinating Committee at any time
prior to the election, and may recommend individuals for addition to
or deletion from Collaboration membership.
- The CLAS12 Steering Committee shall be responsible for
coordinating the involvement of the Collaboration in the building of
- The CLAS12 Steering Committee shall be appointed by the
CCC, and the CCC may modify the duties of the Steering
- The members of the committee will normally include
representatives from the CLAS12 subsystems.
- The chair of the committee shall be selected by and from its
members for a term of two years. The chair may serve for more than
one term at the discretion of the CCC.
- Each person on the Steering Committee serves for one or
more terms of two years.
- The chair of the CLAS collaboration, the Hall B leader, the Hall B
12 GeV control account manager, and the Hall B lead engineer shall
serve as ex officio members of this committee.
ELECTIONS OF COMMITTEE REPRESENTATIVES
- Every full and term member of the Collaboration will have the
right to vote in the election of the Chairperson of the Coordinating
- Every full and term member of the Collaboration
will have the right to vote in one and only one Physics Working Group.
- Physics Working Groups will be responsible
for organizing the election of their representatives.
- Election of new committee members, including the Chairperson of
the Coordinating Committee, will take place at the last scheduled
collaboration meeting during the Spring so that new members may
take their positions starting September 1 of each year.
- Election of the Chairperson of the Coordinating Committee will be
by secret ballot. A member may submit his/her ballot prior
to the collaboration meeting by mail or by electronic mail.
- Election of the Chairperson of the Coordinating Committee
requires a plurality of the votes cast.
- A special election may be called by the Coordinating Committee to
replace the Chairperson of the Coordinating Committee as needed.
- Members must be notified of a special election at least 30 days
prior to the special election.
- Notification of the special election may be by mail or electronic
- A special election may take place at any time.
- The Chairperson of the Coordinating Committee shall convene
regular meetings of the full Collaboration, not less frequently
than two times a year.
- The Coordinating Committee shall meet as required.
PROPOSALS FOR RUN TIME
- Proposals, including jeopardy proposals, for using the Hall B
instrumentation can be submitted by members of the Collaboration to
the CEBAF Program Advisory Committee only with the approval of a
Physics Working Group or the full CLAS Collaboration.
- The spokespersons for these proposals must be members of the
- The Coordinating Committee is responsible for communicating
recommendations for the scheduling of Hall B experiments to the CEBAF
management. These recommendations shall be based primarily on
readiness to run the experiment, the natural progression of the
technical equipment, the contributions of the experimenters to the
Collaboration, and any priorities attached to the experiments by the
All full members of the Collaboration shall have free and equal access
to any data taken by the Collaboration. Members shall inform the
Chairperson of the Coordinating Committee of their plans to analyze
When a part of the Hall B activity is to become the thesis work of a
student, the student's thesis advisor will so inform the Chairperson
of the Coordinating Committee in writing. The Chairperson will
maintain a list of active thesis projects.
- Any paper reporting the result of an experiment using Hall B CLAS
data requires the approval of the Collaboration before publication.
- The lead author of a paper reporting the result of a Hall B
experiment will submit a pre-publication draft to the Chairperson
of the Coordinating Committee.
- The Chair of the Coordinating Committee, or a member of the
Coordinating Committee designated by the Chair, will immediately
appoint an Ad Hoc committee of two or three individuals to review
the paper and assist the lead author in getting it accepted by the
- If the Ad Hoc committee recommends publication, the document will
be made available to each Collaboration Member for comments. All
responses concerning the document shall be addressed to both the
author and the Ad Hoc committee. The Chair of the Coordinating
Committee will specify a deadline for responses.
- After the lead author and the Ad Hoc committee have addressed the
comments from collaboration members -- if, in the judgment of the
members of the Ad Hoc Committee, major rewriting of the paper or
sections of the paper have taken place as a result of member's
comments, the revised paper will again be made available, in the
manner specified in XI.A.3, for final approval by the
- Any disapproval on the part of the whole Collaboration or members
of the Collaboration should be communicated to both the Ad Hoc
committee and the authors. The Ad Hoc committee may withdraw its
recommendation for publication at any time before final
approval. Approval for publication is automatically granted
following the specified deadline unless the Ad Hoc committee withdraws
its approval, or the author changes the content of the paper.
Changes to correct grammatical errors or to incorporate minor
modifications suggested by referees are not considered changes in the
content of the paper.
- If a paper is rejected by the Ad Hoc committee, the authors may
rewrite and resubmit the paper. The review process outlined in
Articles XI.A.2 through XI.A.5 will be repeated. In case of conflict
the Coordinating Committee as a whole will review the draft and
recommend for or against publication. If the paper is rejected by the
Coordinating Committee, the author may submit the paper to the full
Collaboration for majority approval at a collaboration meeting.
Co-authorship on Collaboration publications shall be decided on an
"opt-in" basis from among eligible members.
(as amended 11-08)
- All full and term Collaboration members who were members at the
time data leading to a publication were taken are eligible to be
- All current full members and term members (consistent with Charter
section II.B.4) are eligible to be co-authors.
- The Membership Committee will maintain a database that shall be
used to decide which members (full & term) are eligible co-authors.
- Any eligible Collaboration member will be added to an author list
after he or she actively asserts the right to be included ("opt-in"),
via a mechanism defined by the Membership Committee. This committee
is responsible for delivering the final author list for any
publication prior to submission.
- It is the responsibility of the lead authors to initially
determine which limited members (if any) shall be included on the
author list (consistent with the provisions of Charter Section
- In case of disputes, the CLAS Coordinating Committee (in
consultation with members of the Membership Committee) will make final
decisions on authorship.
- The CLAS Coordinating Committee is responsible for the accurate
and broad dissemination of results arising from CLAS activities to the
scientific community. To accomplish these goals, the CLAS Coordinating
Committee will establish a CLAS Speakers Committee, and authorize that
committee to select speakers, solicit invitations to speak, review
content of talks, and coordinate the release of results through talks
- All invitations for talks based on CLAS results fall under the
purview of the CLAS Speakers Committee. Members who receive
invitations for such talks will forward those invitations to the CLAS
Coordinating Committee and the CLAS Speakers' Committee.
- The CLAS Speakers Committee shall act in accordance with bylaws approved by the Collaboration for
- The CLAS Coordinating Committee will act as a final arbiter of
disagreements with decisions made by the CLAS Speakers' Committee.
End of CLAS Charter document