JET is the world's largest nuclear fusion research facility [1].

History of Tcl/Tk at JET:

Used since the early nineties, when the main Control and Data Acquisition Systems moved from minicomputers to Sun/Solaris machines.

Usage (some):

• On-line test and off-line acceptance, GUI utilities for VME and PCI modules.
• GUI front-end for the fault/patch/intervention logging system.
• GUI that controls the countdown and triggering of a JET pulse.
• GUI to display and manage Grid engine jobs on the 100+ linux based data analysis machines.
• Tclhttpd running on both Microsoft Windows- and Linux-based front-end PCs, provides a common interface to the control and data acquisition system.
• Scotty is used for network monitoring.

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