By Topic

A fully digital architecture for trigger circuits in programmable logic

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Di Odoardo, A. ; Dipt. di Elettronica, Politecnico di Milano, Italy ; Geraci, A. ; Ripamonti, Giancarlo ; Seminari, M.

A digital trigger module for high-resolution nuclear spectroscopy, composed of three filters operating in parallel and a resolver, is introduced. The single filters are optimized so as to allow low-level discrimination as well as high time-resolving capabilities. Particular care is taken in order to minimize hardware resources. In the case of a high-resolution gamma spectroscopy system based on quasi-coaxial HPGe detectors, the lower threshold discrimination level can be as low as 4 keV while measuring the 1.17-MeV 60Co line. The capability of discriminating gamma photons impinging almost at the same time is limited in practice only by the intrinsic charge-collection time of the detector. The circuit is implemented in a programmable device (field-programmable gate array) and exploits at best hardware resources already allocated to the filter for energy estimate. A built-in calibration circuit is also implemented, which allows easy setting of discrimination thresholds. It is shown that the devised architecture can be easily upgraded to accommodate a higher number of parallel filters if a further increase of circuit performance is required.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:49 ,  Issue: 6 )