The controlled-drift detector

A new position-sensing X-ray detector is presented, The novel device is cal led Controlled-Drift Detector (CDD). The detector is fully depleted and is operated by switching between integration and drift modes, The relevant det ails of the detector design are discussed. A complete experimental characte rization of the fast readout of the integrated signal charges achievable wi th static drift fields in the range 100-400 V/cm has been carried out. Prel iminary measurements to evaluate the charge-handling capacity are also show n. The CDD can provide unambiguous two-dimensional position measurement, hi gh-resolution X-ray spectroscopy and time resolution below 1 ms. (C) 2000 P ublished by Elsevier Science B.V. All rights reserved.