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Open Access Publications from the University of California

Radiation Damage Studies with Hadrons on Materials and Electronics


Many materials and electronics need to be tested for the radiation environment expected at linear colliders (LC) where the accelerator and detectors will be subjected to large fluences of hadrons, leptons and gamma’s over their life. Examples are NdFeB magnets considered for the damping rings and final focus, electronic and electro-optical devices to be utilized in detector readout and accelerator controls and CCDs required for the vertex detector. Effects of gamma’s on many materials have been presented and our understanding of the situation for rare earth permanent magnets at the Particle Accelerator Conference 2003. Here we give first measurements of the fast neutron, stepped doses at the UC Davis McClellan Nuclear Reactor Center (UCD/MNRC) together with the induced radioactivities. Damage appears to be proportional to the distances between the operating point and Hci.

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