Tracking performance of a single-crystal and a polycrystalline diamond pixel-detector

Journal article

We present a comparative characterization of the performance of a single-crystal and a polycrystalline diamond pixel-detector employing the standard CMS pixel readout chips. Measurements were carried out at the Fermilab Test Beam Facility, FTBF, using protons of momentum 120 GeV/c tracked by a high-resolution pixel telescope. Particular attention was directed to the study of the charge-collection, the charge-sharing among adjacent pixels and the achievable position resolution. The performance of the single-crystal detector was excellent and comparable to the best available silicon pixel-detectors. The measured average detection-efficiency was near unity, = 0.99860±0.00006, and the position-resolution for shared hits was about 6 μm. On the other hand, the performance of the polycrystalline detector was hampered by its lower charge collection distance and the readout chip threshold. A new readout chip, capable of operating at much lower threshold (around 1 ke-), would be required to fully exploit the potential performance of the polycrystalline diamond pixel-detector.© 2013 IOP Publishing Ltd and Sissa Medialab srl.

Authors: Menasce, D; Moroni, L; Ngadiuba, J; Uplegger, L; Alagoz, E

• Publication status: Published
• Journal: JOURNAL OF INSTRUMENTATION
• Volume: 8
• Issue: 6
• Pages: P06006-P06006
• Publication date: 2013-06-01
• DOI: 10.1088/1748-0221/8/06/P06006
• EISSN: 1748-0221
• ISSN: 1748-0221
• Language: English
• Keywords: Solid state detectors; Radiation-hard detectors; Particle tracking detectors (Solid-state detectors); Diamond Detectors