> Here are a few interesting specs about the dielectric losses for each > material. > I am guessing you want to use it for (TESLA) cap construction. > > Frequency = 10^6Hz > -------------------------- > PP: <5*10^-4 > HDPE: 2*10^-4 > UHMWPE: Sorry, no info > PC: 1*10^-2 > PS: 0.5-4*10^-4 > > Coiler greets from germany, > Reinhard What are the units or fractions here? Is this Power loss? or energy loss?