Progress in experimental particle physics continues to depend crucially upon the ability to carry out experiments in a high radiation environment. The RD42 Collaboration at CERN is investigating Chemical Vapor Deposition (CVD) diamond as a material for tracking detectors operating in such conditions. CVD diamond detectors have been used routinely and successfully in beam conditions/beam loss monitors as the innermost detectors in the highest radiation areas of Large Hadron Collider (LHC) experiments.
This talk will present an overview of the latest developments from RD42, including the most recent radiation tolerance measurements performed on the highest quality single-crystal (scCVD) and poly-crystalline Chemical Vapor Deposition (pCVD) diamond material with 800 MeV and 24 GeV protons up to a fluence of about 2 x 10^16 protons/cm^2.
Over the last two years the RD42 collaboration has furthermore constructed a series of 3D pixel detectors using pCVD diamond as the active material and laser fabricated electrodes in the bulk, with 3D cell sizes of 50 um x 50 um and 3D electrode diameters of 2.6 um achieved. These devices were studied in test beams using the latest pixel readout electronics developed by ATLAS and CMS. The talk will present recent results obtained with these devices.