July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

New beam test results of 3D pixel detectors constructed with poly-crystalline CVD diamond

Jul 29, 2020, 3:30 PM
virtual conference

virtual conference

Talk 13. Detectors for Future Facilities (incl. HL-LHC), R&D, Novel Techniques Detectors for Future Facilities (incl. HL-LHC), R&D, Novel Techniques


Harris Kagan (Ohio State University (US))


Detectors based on Chemical Vapor Deposition (CVD) diamond have been used successfully in beam conditions monitors in the highest radiation areas of the LHC. Future experiments at CERN will to accumulate an order of magnitude larger fluence. As a result, an enormous effort is underway to identify detector materials that will operate after fluences of >10^{16}/cm^2.

Diamond is one candidate due to its large displacement energy that enhances its radiation tolerance. Over the last 2 years the RD42 collaboration has constructed 3D CVD diamond pixel detectors that use laser fabricated electrodes to enhance radiation tolerance. We will present beam test results of these devices. The cells in these detectors had a size of 50µm x 50µm with columns 2.6µm in diameter ganged in 1 x 5 and 3 x 2 patterns to match the ATLAS and CMS pixel read-out electronics. In beam tests, a tracking efficiency of 99.3% was achieved. The efficiency of both devices plateaus at a bias voltage of 30V.

Primary authors

William Trischuk (University of Toronto (CA)) Harris Kagan (Ohio State University (US)) on behalf of the RD42 Collaboration

Presentation materials