Pixel detectors using synthetic diamond arc an attractive alternative to si
licon for use in radiation harsh environments such as at the LHC. Recent te
st beam results using CMS pixel readout electronics are presented which dem
onstrate a hit efficiency of 94% and position resolution of 31 mum for a di
amond pixel sensor with 125 mum x 125 mum pitch. (C) 2001 Elsevier Science
B.V. All rights reserved.