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The Time-of-flight and High-Resolution (TOF-HR) group of the ILL operates three distinct kinds of instruments that measure the atomic, molecular and crystal motions of samples in powder, glass or liquid form.

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SQW data transformation programme

by ???, J. Wuttke & O. Randl (C version, 1997)

Sqw is the equivalent of inx for back-scattering (IN10, IN13 and IN16) data reduction (code in Fortran and C). There exists a version for elastic scans called sqwel written in Fortran.

Input file: ILL back-scattering data file. Output file: ASCII 3 columns files x,y,dy.

A graphical user interface (GUI) written in tcl/tk by C. Lacaille-Desse (CS, ILL) is also available:

SQW is available on:

  • All TOFHR SGI machines like Lotus (full path for SGI machines = /home/cs/model/TOFHR/exe/sqw)
  • Via the web on BARNS.

Documentation: see the SQW manual

Sources & more:

  • Stable version on request to johnson(at) (CS group leader).

  • A SQW Beta version in C tested on SGI & PC-Linux workstations is also available (more information on request to T. Seydel).