Speaker
Description
"Future planning for HEP facilities indicates a march to ever high beam power and stored beam energy. This provides an ongoing challenge to the design and operation of facilities. In particular, the time evolution of material properties - particularly for beam intercepting devices such as beam windows, targets, and beam absorbers - at ever
higher levels of beam interaction are poorly understood. In particular, the evolution of thermomechanical properties such as thermal conductivity, surface emissivity, and strength can reduce or eliminate the margins designed into critical devices, shortening
service life or device safety. We will briefly review relevant definitions and parameters, then discuss the techniques and facilities available to characterize the evolution of material properties of relevance to high energy physics.
