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The "Projects and Calculations" labs (BPC) has two main roles : achievement of innovative projects and carrying out complex calculations in many physical fields for all ILL divisions.

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BPC carries out thermal studies on solid state systems : we investigate conduction, convection and radiation in and between solids.

Temperature mapping the flange connecting a sample tube to a thermal machine

In this example, aflange provides the thermal link between a thermal machine and a sample tube. The study showed that the bending layers observable in the middle of the flange have no significant effect on the temperature mapping of the flange. We were able to demonstrate that, in order to compensate thermal differential dilatations during cooling, there is no need to build this system in two different parts linked by dedicated wires.