Scientific Interest Groups (SIGs)


About SIGs

SIGs exist to give members the opportunity to focus on specialty areas while remaining connected to the entire scope of crystallographic applications.  Joining a SIG means finding individuals within the larger network who have common scientific goals, challenges and interests.



SIG Activities & Responsibilities

A scientific interest group, in addition to any other activity described in their constitution or petition for formation, will organize at least one half-day session every year at an annual meeting. The Program Chair will make assignment of meeting rooms and time blocks for these sessions. Within the time blocks, however, the format may be any that is considered appropriate by the Group. Abstracts for the sessions must appear in the program and abstract book and must conform to the standard regulations made by the Program Chair with respect to format, deadlines, etc. These sessions will be interspersed with the general plenary sessions.


An annual report of the SIG activities should be submitted to the Council one month before the annual meeting.  A representative of the SIG should meet with the Council at the annual meeting.  A report of scientific highlights of the year should be submitted to the Council by December 1st, for review and enclosure in the February issue of the ACA newsletter.


One representative from each SIG should attend the annual planning session held at the conclusion (or the next day) of the annual meeting, to develop the next year's meeting program.


The resources of the ACA, such as AIP services, newsletter, etc., will be available to the Group.  As an ACA SIG, the Group will be subjected to the ACA Constitution, Bylaws and Operating Rules.  Proposed changes in the Group's rules, dues, etc., must be approved by the ACA Council.


Biological Macromolecules

Fiber Diffraction
General Interest
Light Source (formerly Synchrotron Radiation )
Neutron Scattering
Powder Diffraction
Service Crystallography
Small Angle Scattering
Small Molecules 
Young Scientists

How To Form a SIG


An Interest Group may be activated by approval of the ACA Council. To form a Group, interested participants must submit to the ACA Council a petition, which includes:


(a) The name of the Group and a statement of its area of interest.


(b) A proposed set of rules and regulations under which the group will operate. Selection of officers, a description of likely activities, program planning responsibilities, etc., should be covered. These rules must be consistent with the ACA Constitution, Bylaws, and Operating Rules.


(c) A proposed dues structure, if any, and the purposes for which the dues will be used. The Group's Treasurer will do collection, accounting, and dispersal of dues required by the Group.


(d) Signatures of at least 30 current or intending members of the ACA. Members of ACA Interest Groups must be or become members of the ACA.


(e) For Council approval to become effective, enough intending members must become current ACA members such that within 90 days after Council's affirmative action the total number of petitioning active members is at least 30.


 Young Scientists



    2016 Meeting

  July 22-26

 Denver, Colorado