介绍了一种基于放大器、模数转换(Analog to Digital Converter,ADC)和现场可编程门阵列(Field Programmable Gate Array,FPGA)的多通道数据采集方案,包括采集系统的主要构成以及实现方法,最后对系统性能进行了测试。该电路模块为子母...介绍了一种基于放大器、模数转换(Analog to Digital Converter,ADC)和现场可编程门阵列(Field Programmable Gate Array,FPGA)的多通道数据采集方案,包括采集系统的主要构成以及实现方法,最后对系统性能进行了测试。该电路模块为子母板结构,通过PCI Extensions for Instrumentation Express(PXIe)机箱背板总线实现数据的读出能力。该模块可支持8个采集通道的同步采集,每通道采样率可达500 MS/s。测试结果表明,在其带宽内有效位可接近11 bit(ADC采样精度为14 bit),能够满足高速高精度的数据采集需求。展开更多
Purpose Back-n is a white neutron beamline at China spallation neutron source,which was established in the year of 2018.It is a powerful facility for nuclear data measurement,neutron detector calibration,and radiation...Purpose Back-n is a white neutron beamline at China spallation neutron source,which was established in the year of 2018.It is a powerful facility for nuclear data measurement,neutron detector calibration,and radiation effect research.Method A series of detectors were built for different experiments,including beam monitoring,beam profile measurement,neutron induced secondaries(fission fragments,light charged particles and gamma)cross section measurement,and neutron resonance radiography,etc.A common digitization electronics and a cluster-based DAQ were developed for these detector systems.Most detectors have been employed at Back-n and serviced for experiments from the beginning of the beamline running.Results and conclusion As an overview of detectors of Back-n,the details of the detector design and the experiment performing are described in this paper.Some developing systems,e.g.,MTPC and B-MCP,are also included.展开更多
文摘介绍了一种基于放大器、模数转换(Analog to Digital Converter,ADC)和现场可编程门阵列(Field Programmable Gate Array,FPGA)的多通道数据采集方案,包括采集系统的主要构成以及实现方法,最后对系统性能进行了测试。该电路模块为子母板结构,通过PCI Extensions for Instrumentation Express(PXIe)机箱背板总线实现数据的读出能力。该模块可支持8个采集通道的同步采集,每通道采样率可达500 MS/s。测试结果表明,在其带宽内有效位可接近11 bit(ADC采样精度为14 bit),能够满足高速高精度的数据采集需求。
基金support provided by the National KeyR&DProgram of China(Grant No.2016YFA0401600).
文摘Purpose Back-n is a white neutron beamline at China spallation neutron source,which was established in the year of 2018.It is a powerful facility for nuclear data measurement,neutron detector calibration,and radiation effect research.Method A series of detectors were built for different experiments,including beam monitoring,beam profile measurement,neutron induced secondaries(fission fragments,light charged particles and gamma)cross section measurement,and neutron resonance radiography,etc.A common digitization electronics and a cluster-based DAQ were developed for these detector systems.Most detectors have been employed at Back-n and serviced for experiments from the beginning of the beamline running.Results and conclusion As an overview of detectors of Back-n,the details of the detector design and the experiment performing are described in this paper.Some developing systems,e.g.,MTPC and B-MCP,are also included.