A highly tunable ASIC prototype for reading out scintillators and providing pulse shape discrimination in real time (Conference Presentation)

Jyothisraj Johnson; Billy Boxer; Mani Tripathi; Carl R. Grace

doi:10.1117/12.2635641

3 October 2022 A highly tunable ASIC prototype for reading out scintillators and providing pulse shape discrimination in real time (Conference Presentation)

Jyothisraj Johnson, Billy Boxer, Mani Tripathi, Carl R. Grace

Author Affiliations +

Proceedings Volume PC12241, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV; PC1224109 (2022) https://doi.org/10.1117/12.2635641
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

As Silicon Photomultipliers (SiPMs) have become widely accepted photodetection replacements for photomultiplier tubes (PMTs), there is a demonstrable need for compact electronics that operate as front-end systems for high-density SiPM array readout for specialized end-use applications. One such application is fast neutron/gamma pulse shape discrimination (PSD). Currently, various scintillators are being developed and improved for such PSD, and consequently, there is a need for front-end systems capable of providing the required functionality for their readout. We have designed the second version of a prototype application-specific integrated circuit (ASIC), PSD_CHIP. As in the first version, the ASIC integrates a scalable multi-channel readout system with a low noise front-end, real-time PSD, and a highly tunable digital core. Improvements in this version consist of a dual polarity capable front-end, adjustable gain, and two different techniques for the programmable digital delay lines. The ASIC is designed to provide an input dynamic range of order 1MeV energy depositions, depending on the light yield of specific scintillators. The high level of programmability on-chip is maintained in the synthesized digital core. Current targeted end-use applications include neutron cameras and active neutron-tagging systems for nuclear recoil calibration work of dark matter and neutrino experiments.

Conference Presentation

Citation Download Citation

Jyothisraj Johnson, Billy Boxer, Mani Tripathi, and Carl R. Grace "A highly tunable ASIC prototype for reading out scintillators and providing pulse shape discrimination in real time (Conference Presentation)", Proc. SPIE PC12241, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIV, PC1224109 (3 October 2022); https://doi.org/10.1117/12.2635641

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KEYWORDS

Scintillators

Prototyping

Calibration

Cameras

Electronics

Imaging systems

Integrated circuit design

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