It also eliminates any ring around {TAIL ~ the top side} of the target, allowing the entire area of the cathode to provide {HEAD ~ the coating} 
It also eliminates any ring around { TAIL ~ the top side } of the target , allowing the entire area of the cathode to provide { HEAD ~ the coating }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD