【作者】 姜林； 文敬君； 薛涛； 韦亮军； 郭晓伟； 杨昊彦； 潘秋桐； 李荐民； 刘以农；

【Author】 JIANG Lin;WEN Jing-jun;XUE Tao;WEI Liang-jun;GUO Xiao-wei;YANG Hao-yan;PAN Qiu-tong;LI Jian-min;LIU Yi-nong;Key Laboratory of Particle & Radiation Imaging (Tsinghua University);Department of Engineering Physics,Tsinghua University;Greater Bay Area National Center of Technology Innovation;

【机构】 粒子技术与辐射成像教育部重点实验室(清华大学)； 清华大学工程物理系； 粤港澳大湾区国家技术创新中心；

【摘要】 本文详细介绍了锦屏中微子实验波形数字化系统WRX0608A1的初步设计。WRX0608A1设计含12层PCB,搭载了6颗ADC (ADC13B1G)、1颗FPGA (Xilinx Kintex 7 XC7K325T)、1颗PLL (TI LMK04803)、1个DDR3SODIMM (Micron MT8KTF51264HZ-1G9P1)、1颗转接驱动器(TI DS125BR820)和两个QSFP接口等。使用R&S的SMA100B、TTE的带通滤波器Q70T-10M-1M-50-720A和低通滤波器J97T-14M-50-69A实际测试了ADC的有效位数。结果表明,在10 MHz正弦波下,ENOB大于10 bit,可以满足中微子实验的需求。QSFP所有八通道的眼图张开面积和张开UI分别好于3900和50%。当BER为6.393e-15时,测试无误码。30通道的数据获取系统的搭建及测试正在进行中。更多还原

【Abstract】 This paper reports the preliminary design of waveform digitizer WRX0608 A1 for Jinping neutrino experiment at CJPL.The WRX0608 A1 is a 12 layer PCB,hosting 6 ADCs,one FPGA(Xilinx Kintex 7 XC7 K325 T),one PLL(TI LMK04803),one DDR3 SODIMM(Micron MT8 KTF51264 HZ-1 G9 P1),one re-driver(TI DS125 BR820),two QSFP interfaces and other parts.The ADC’s effective number of bits(ENOB) was actually tested using SMA100 B from R&S,band-pass filter Q70 T-10 M-1 M-50-720 A and low-pass filter J97 T-14 M-50-69 A from TTE.The results show that under 10 MHz sine wave, ENOB>10 bit,which means that it can meet the needs of neutrino experiments.The open area and the open UI of QSFP all eight lanes’ eye diagram are better than 3900 and 50%, respectively.When BER is 6.393 e-15,the test is no error.The 30 channel data acquisition system is being set up and tested.更多还原