The charging-up effects on Topmetal pixel chips for the polarization detection of GRBs

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2026-06-01 Epub Date: 2026-02-02 DOI:10.1016/j.nima.2026.171355

Lin Zhou , Huanbo Feng , Zuke Feng , Difan Yi , Ran Chen , Kuan Liu , Lirong Xie , Qian Zhong , Jiangchuan Tuo , Tianyi Xiong , Fei Xie , Enwei Liang , Hongbang Liu

{"title":"The charging-up effects on Topmetal pixel chips for the polarization detection of GRBs","authors":"Lin Zhou , Huanbo Feng , Zuke Feng , Difan Yi , Ran Chen , Kuan Liu , Lirong Xie , Qian Zhong , Jiangchuan Tuo , Tianyi Xiong , Fei Xie , Enwei Liang , Hongbang Liu","doi":"10.1016/j.nima.2026.171355","DOIUrl":null,"url":null,"abstract":"<div><div>The Gas Microchannel Plate Pixel Detector (GMPD) is used in astrophysics for measuring X-ray polarization and serves as the prototype for the Low-Energy Polarization Detector (LPD) of the POLAR-2 project. During gamma-ray burst (GRB) observations, the incident flux can vary rapidly on short timescales, inducing charging-up effects that degrade gain stability. We characterize the chip-level charging-up behavior and quantify its impact on detector gain. To suppress this effect at the chip level, a 300 nm resistive film with a sheet resistance of <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>10</mn></mrow></msup><mspace></mspace><mi>Ω</mi><mo>/</mo><mi>sq</mi></mrow></math></span> is applied, effectively maintaining gain stability within 9% across varying operational conditions.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1086 ","pages":"Article 171355"},"PeriodicalIF":1.4000,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168900226000811","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/2/2 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}

引用次数: 0

Abstract

The Gas Microchannel Plate Pixel Detector (GMPD) is used in astrophysics for measuring X-ray polarization and serves as the prototype for the Low-Energy Polarization Detector (LPD) of the POLAR-2 project. During gamma-ray burst (GRB) observations, the incident flux can vary rapidly on short timescales, inducing charging-up effects that degrade gain stability. We characterize the chip-level charging-up behavior and quantify its impact on detector gain. To suppress this effect at the chip level, a 300 nm resistive film with a sheet resistance of

1 0^{10} Ω / sq

is applied, effectively maintaining gain stability within 9% across varying operational conditions.

查看原文本刊更多论文

用于grb偏振探测的Topmetal像素芯片的充电效应

气体微通道板像素探测器（GMPD）用于天体物理学中测量x射线偏振，是POLAR-2项目低能偏振探测器（LPD）的原型。在伽玛射线暴（GRB）观测期间，入射通量可以在短时间尺度上快速变化，引起充电效应，降低增益稳定性。我们描述了芯片级充电行为，并量化了其对检测器增益的影响。为了在芯片级抑制这种影响，应用了300nm的电阻膜，其片电阻为1010Ω/sq，在不同的操作条件下有效地将增益稳定在9%以内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.