Investigating the effects of acceptor removal mechanism and impact ionization on proton irradiated 300 $μ$m thick LGAD

Rajiv Gupta; Sunidhi Saxena; Kalpna Tiwari; Rahul Sharma; Namrata Agrawal; Ashutosh Bhardwaj; Kirti Ranjan; Ajay Kumar

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arXiv · 2506.15752

Investigating the effects of acceptor removal mechanism and impact ionization on proton irradiated 300 $μ$m thick LGAD

Rajiv Gupta·Sunidhi Saxena·Kalpna Tiwari·Rahul Sharma·Namrata Agrawal·Ashutosh Bhardwaj·Kirti Ranjan·Ajay Kumar

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Abstract

Low-Gain Avalanche Detectors (LGADs) are the leading 4D sensing technology selected for use in the High Luminosity Large Hadron Collider (HL-LHC). However, their proximity to the interaction point makes them highly susceptible to radiation-induced damage. Such degradation effects can be effectively studied through TCAD simulations. In this work, we extend the validation of a previously developed proton damage model for transitional sensors. The enhanced model for LGAD also incorporates an acceptor removal mechanism and modifications in impact ionization behavior, resulting in a more comprehensive and reliable tool for fabrication and performance analysis.

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Rajiv Gupta, Sunidhi Saxena, Kalpna Tiwari, Rahul Sharma, Namrata Agrawal, Ashutosh Bhardwaj, Kirti Ranjan, Ajay Kumar. 2025-06-18. Investigating the effects of acceptor removal mechanism and impact ionization on proton irradiated 300 $μ$m thick LGAD. https://arxiv.org/abs/2506.15752

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