Design studies on electronics and data acquisition of a real time diamond spectrometer for the SPARC neutron camera
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-11-01 |
| Journal | Review of Scientific Instruments |
| Authors | M. Petruzzo, A. Celora, Gabriele Croci, E. Gallo, G. Gorini |
| Institutions | National Academies of Sciences, Engineering, and Medicine, Eni (Italy) |
| Citations | 2 |
Abstract
Section titled âAbstractâThe design of a compact 2 Ă 2 diamond matrix with independent and redundant pixels optimized for the spectrometric neutron camera of the SPARC tokamak is presented in this article. Such a matrix overcomes the constraints in dynamic range posed by the size of a single diamond sensor while keeping the ability to perform energy spectral analysis, marking a significant advancement in tokamak neutron diagnostics. A charge pre-amplifier based on radio frequency amplifiers based on InGaP technology transistors, offering up to 2 GHz bandwidth with high robustness against radiation, has been developed. A first single-channel device has been tested and proven to provide a fast signal development time of 20-25 ns, necessary to mitigate pileup effects while offering precise energy measurements. As the diamond sensors may suffer from polarization effects due to the trapping of charges at the diamond/metal interface, a periodical bias inversion can guarantee optimal performance. To facilitate that, a reversible high voltage power supply has been developed. The ongoing development of data acquisition equipment and real-time processing algorithms based on programmable gate arrays further enhances the neutron cameraâs capabilities.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
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