18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

Performance of four CVD diamond radiation sensors at high-temperature

Not scheduled
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 80
Poster Semiconductor Detectors Poster Session A


Dr David Smith (Brunel University London)


Ionising radiation detectors based on wide band-gap materials have the potential to operate at temperatures greater than 200 °C. Such detectors are important in applications such as monitoring near reactors and in deep oil and gas well bore-hole logging. We discuss the development of alpha particle detectors, based on CVD diamond, which operate with good charge collection efficiency and energy resolution at temperatures up to 225 °C. Four nominally identical commercial, electronic grade, CVD diamond sensors have been coated with a thin metal conductive layer in our laboratory and then attached to ceramic PCB. We present the I-V characteristics, the CCE and the energy resolution for alpha particles from a mixed Pu-Am-Cm source, for the four sensors operating at temperatures from 20 to 250 °C. A comparison of Monte Carlo simulations of the energy spectra is made with experimental data.

Primary authors

Dr George Fern (Brunel University London) Prof. Peter Hobson (Brunel University (GB)) Alex Metcalfe (Brunel University London) Dr David Smith (Brunel University London)

Presentation Materials