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FPGA-based 10G/40G Ethernet Firmware for pixel detector in SHINE

Radiation Detection Technology and Methods 2021年第3期5卷 434-439页

作者： Yanke Cai Jie Zhang Hangxu Li Nian Yu Changge Zi Cong He Xiaoshan Jiang Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China State Key Laboratory of Particle Detection and Electronics Beijing 100049China University of Chinese Academy of Sciences(UCAS) Beijing 100049China

Background Shanghai HIgh repetition rate XFEL aNd Extreme light facility(SHINE)is a free electron laser facility,which will provide research methods such as high-resolution imaging for many *** pixel detector,which is in the pre-research stage,is one of most important components of the *** The current target data rate of the pixel detector in SHINE is about 100 GB/*** the high data rate,the 10G/40G Ethernet firmware for pixel detector in SHINE was developed on field programmable gate array(FPGA),which will lead to more integrated electronic design and make the system *** The firmware converts the media independent interfaces(MII)of 10G and 40G Ethernet to each other and uses a polling method to process data from four 10G Ethernet *** on the above methods,the firmware can merge four 10G Ethernet channels into one 40G Ethernet *** and Conclusion The firmware successfully transmits data between the data source and the *** bandwidth of the firmware is 36.66 Gbps when the computer equipped with 10G network interface controller(NIC)is set as the data *** joint test with the 1G/10G hub and SiTCP,the bandwidth of firmware is 36.3 *** 40 SiTCP nodes whose system clock frequency can exceed 125 MHz can be used as the data source of the firmware,which will provide a variety of technical solutions for pixel detector.

关键词： FPGA 40G Ethernet pixel detector SHINE

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Performance evaluation of an SOI pixel sensor with in-pixel binary counters

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Radiation Detection Technology and Methods 2018年第1期2卷 80-86页

作者： Longlong Song Yunpeng Lu Ryo Hashimoto Ryutaro Nishimura Shunji Kishimoto Yang Zhou Zhigang Wu Yasuo Arai Qun Ouyang State Key Laboratory of Particle Detection and Electronics(Institute of High Energy Physics CAS)Beijing 100049China University of Chinese Academy of Sciences Beijing 100049China Institute of Materials Structure Science KEK1-1 OhoTsukubaIbaraki 305-0801Japan School of High Energy Accelerator Science SOKENDAI1-1 OhoTsukubaIbaraki 305-0801Japan Institute of Particle and Nuclear Studies KEK1-1 OhoTsukubaIbaraki 305-0801Japan

Introduction pixel detectors fabricated with the silicon-on-insulator(SOI)technology suffered from the digital pickup,due to the capacitive coupling between the sensing electrode and the in-pixel *** order to tackle this issue,an advanced process called double SOI has been developed.A prototype chip CPIXTEG3b adopting this new process was designed and *** optimization concerning the double-SOI design and testing of the single pixel were already presented in a separate publication,this paper focuses on its noise performance of the full matrix and X-ray detection utilizing a synchrotron photon *** Equivalent noise charge(ENC)of the full pixel matrix was measured with electrical pulse *** threshold dispersion was minimized by the DAC tuning in each individual *** a photon-counting X-ray imager,noise count accumulated up to 1 h was *** efficiency was measured with a micro-focused beam as well as a flat field generated by the X-ray scattering on a glassy carbon at the KEK PF beam line *** The typical ENC is 52 e−and the sigma of threshold dispersion is 10 e−over the full matrix.A merit of“zero”noise count is also demonstrated,which is consistent with the low *** prototype chip has been tested with microbeam and used to measure the beam profile to be with a full width of 50µm at 2.4%of the maximum *** sensor depletion and charge sharing between neighboring pixels have been carefully characterized,providing insights for further *** homogeneity of response to X-ray photons has been demonstrated in the flat field *** work has drawn a final conclusion to the solution of digital pickup issue and opened a promising prospect in low-noise and high-resolution X-ray imaging.

关键词： Double SOI X-ray imaging detectors Photon counting pixel detector

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