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Data handling for Small-Angle Scattering, 18 July 1998

  • Subject: Data handling for Small-Angle Scattering, 18 July 1998
  • From: "John D. Barnes" <[email protected]>
  • Date: Mon, 16 Mar 98 16:58:34 -0500
Here is a special item for small-angle scatterers. who will be attending 
the 1998 ACA Annual Meeting

                         Announcement - ACA Workshop on

                    Data handling for Small-Angle Scattering
                         Washington, DC, 18 July 1998

     As the Small-Angle Scattering Community expands the need for 
increased attention to issues relating to the handling of SAS data is 
becoming apparent. The IUCr Commission on Small-Angle Scatering and the 
ACA Small-Angle Scattering Special Interest Group have therefore decided 
to convene a workshop to examine the current state of the art in this 
area. The panel will consist of John Barnes (NIST, USA), Malcolm Capel 
(NSLS, USA), Jan Skov Perdersen (Risoe, Denmark), and Dmitri Svergun 
(EMBL, Germany).
     The Topics discussed will include handling the raw data as it comes 
out of the experiment, reducing the data to commonly accepted forms, and 
analyzing it using both structural models and indirect transform methods. 
A tentative syllabus for the workshop is given below:

A. Data acquisition issues
A.1 Instrumentation issues
A.2 Formats for Acquiring data
A.3 Capturing Experimental Parameters
A.4 Calibration data

B. Data Reduction issues
B.1 Backgrounds
B.2 Unscattered primary beam
B.3 Sample cells
B.4 Applying Corrections
B.5 Calibration and scaling
B.5.a Q Scale calibration
B.5.b Absolute Intensity calibration
B.6 Error propagation
B.7 Portable data formats for interchange and visualization (e.g. NEXUS)
B.7.a Self-description
B.7.b Completeness
B.7.c Accessibility

C. Data Interpretation Issues
C.1 Data Input
C.2 Simulation
C.3 Fitting
C.4 Indirect Transform Methods
C.5 Resolution Effects
C.6 Estimating errors in the parameters

D. Software resources
D.1 Data Visualization tools
D.2 Modelling and simulation tools

Preregistration is required for those who wish to participate. Please see 
the WWW page for the meeting at 
http://www.hwi.buffalo.edu/ACA/ACA-Annual/Washington/Washington.html for 
more information about all aspects of the meeting. The "Schedule of 
Sessions" link on that page will eventually get you to more information 
about the Workshop.


Dr. John D. Barnes                       email: [email protected]
NIST Polymer Structure and Mechanics Grp Voice: 301-975-6786
Bldg 224, Rm A209                        FAX: 301-975-4977
NIST, Gaithersburg, MD 20899             URL: http://www.nist.gov/sas
                               or http://www.ctcms.nist.gov/~jdbarnes