Development of MAPS-based detector ladders for the BESIII inner tracker upgrade
Development of MAPS-based detector ladders for the BESIII inner tracker upgrade
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DOI：
10.1016/j.nima.2018.06.032
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Ming-Ming Dong-Ming;X. Ju;X. Tian;X. Lu;C. Qu;Xiu Qinglei;X. Ma;J. Dong;Huajian Zhang;L. Wu;X. Jiang;Q. Ouyang;M. Wang
中科院分区：
文献类型：
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作者：
Ming-Ming Dong-Ming;X. Ju;X. Tian;X. Lu;C. Qu;Xiu Qinglei;X. Ma;J. Dong;Huajian Zhang;L. Wu;X. Jiang;Q. Ouyang;M. Wang
北京光谱仪III(BESIII)内跟踪器1/10覆盖率的三层MAP(单片式有源像素传感器)探测器样机被选为BESIII内漂移室升级的原型方案之一。本文介绍了该梯子的设计、施工及试验情况。梯子是探测器的基本构件，探测器由10个薄至50μm的Mimosa28芯片、一根柔性电缆和一个碳纤维支架组成。文中还介绍了电子系统的设计和开发。建立了选择好的芯片的探头测试系统，在梯子组装前完成芯片功能检查和初步性能测试。为了建造梯子，设计和制造了一个夹具。利用这种夹具，实现了芯片的精确定位和柔性电缆与碳纤维支架和芯片的粘接。采用碳纤维复合材料支撑的整个梯子的材料预算约为0.37%X0，切屑定位的平均精度优于10μm。梯子和读出电子设备都表现良好。测试结果与预期一致，为探测器样机的进一步研究奠定了良好的基础。
A three layers MAPS (monolithic active pixel sensor) detector prototype, 1/10 coverage of the BESIII (Beijing spectrometer III) inner tracker, is selected as one of the prototype schemes of the BESIII inner drift chamber upgrade. The design, the construction and the test of the ladder are presented in this paper. The ladder is the basic building block of the detector that consists of ten Mimosa28 chips thinned to 50 μ m, a flex cable and a carbon fiber support. The design and the development of the electronics system are introduced as well. A probe testing system for the selection of good chips was set up to complete the chip functional check and preliminary performance test before the assembly of the ladders. A jig was designed and manufactured for the construction of the ladders. Using this jig, precise location of the chips and gluing of the flex cable to the carbon fiber support and to the chips were achieved. The material budget of the whole ladder with the carbon fiber composite support is about 0.37% X 0, and the average precision of the chip location is better than 10 μ m. The preliminary tests of the ladders have been performed by using radioactive source. Both the ladder and the readout electronics perform well. The test results are consistent with the expectation, which provide a good base for the further study of the detector prototype.