The performance of IHEP-NDL LGAD sensors after neutron irradiation,Journal of Instrumentation

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The performance of IHEP-NDL LGAD sensors after neutron irradiation
Journal of Instrumentation ( IF 1.3 ) Pub Date : 2021-08-20 , DOI: 10.1088/1748-0221/16/08/p08053
M. Li _{1,

2} , Y. Fan _{1,

3} , B. Liu _{1,

3} , H. Cui _{1,

2} , X. Jia _{1,

2} , S. Li _{1,

2} , C. Yu _{1,

2} , X. Yang _{1,

3} , W. Wang _{1,

3} , M. Zhai _{1,

2} , T. Yang _{1,

2} , K. Wu _{1,

2} , Y. Tan _{1,

2} , S. Xiao _{1,

2} , M. Zhao _{1,

3} , X. Shi _{1,

3} , Z. Liang _{1,

3} , Y. Heng _{1,

2,

3} , J. Guimaraes da Costa _{1,

3} , X. Zhang ₄ , D. Han ₄ , A. Howard ₅ , G. Kramberger ₅

Affiliation

The performances of Low Gain Avalanche Diode (LGAD) sensors from a neutron irradiation campaign with fluences of 0.8נ10¹⁵, 1.5נ10¹⁵ and 2.5נ10¹⁵ n _eq/cm² are reported in this article. These LGAD sensors are developed by the Institute of High Energy Physics, Chinese Academy of Sciences and the Novel Device Laboratory for the High Granularity Timing Detector of the High Luminosity Large Hadron Collider. The timing resolution and collected charge of the LGAD sensors were measured with electrons from a beta source. After irradiation with a fluence of 2.5נ10¹⁵ n _eq/cm², the collected charge decreases from 40 fC to 7 fC, the signal-to-noise ratio deteriorates from 48 to 12, and the timing resolution increases from 29 ps to 39 ps.

更新日期：2021-08-20

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