Volume 106, Number 2, April 2014
|Number of page(s)||5|
|Published online||30 April 2014|
Pulse shape distortion of output signals from single-crystal CVD diamond detector in few-GHz broadband amplifiers
1 The Institute of Physical and Chemical Research (RIKEN) - 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
2 Graduate School of Engineering, Hokkaido University - N13, W8, Kita-ku, Sapporo 060-8628, Japan
3 National Institute of Advanced Industrial Science and Technology (AIST) - 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
Received: 10 February 2014
Accepted: 7 April 2014
The response of a diamond detector made from a single crystal grown by chemical vapour deposition was studied using a broadband amplifier. A short pulse width of for 241Am-α-particles was observed with a digital oscilloscope. To discuss pulse shape distortion from the detector in a measurement system, we simulated waveforms with a SPICE simulator using an equivalent circuit model that contained three main parts: detector, amplifier, and oscilloscope. In the simulation, we found that the pulse width spread by more than 200 ps following amplification. We discuss the effects of the detector read-out circuit time constant on the observed waveforms and confirm that the pulse width spread was restrained by use of a short time constant compared with carrier drift time in diamond crystals.
PACS: 29.40.Wk – Solid-state detectors / 89.20.Bb – Industrial and technological research and development
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.