Development of digital electronics for the search of SHE nuclei using GARIS-II/III at RIKEN

This work describes the implementation of a digital data acquisition system for the search and study of short-lived isotopes or superheavy elements at the GARIS-III separator at the RIKEN Nishina Center. A reduction to 26±0.5 keV in the average value of the Full Width at Half Maximum of the alpha sp...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2023-04, Vol.1049 (1049), p.168068, Article 168068
Main Authors: Brionnet, P., Grzywacz, R.K., Kaji, D., King, T.T., Niwase, T., Morimoto, K., Rykaczewski, K.P., Sakai, H.
Format: Article
Language:English
Subjects:
Digital electronics
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Pulse shape analysis
Silicon detector
Super heavy elements
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Summary:This work describes the implementation of a digital data acquisition system for the search and study of short-lived isotopes or superheavy elements at the GARIS-III separator at the RIKEN Nishina Center. A reduction to 26±0.5 keV in the average value of the Full Width at Half Maximum of the alpha spectrum at 7.133 MeV was achieved, combined with a reduction of the dead time of the overall system to around a few tens of nanoseconds for the detection of very fast decay chains. Moreover, we measured a reduction of the background induced by particles crossing the implantation detector using pulse shape analysis techniques. The detail of the optimization and analysis will be presented.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2023.168068