Three pulse-shape-discrimination (PSD) methods are applied to study the particle identification (PID) by using CsI(Tl) crystal, especially for identifying light charged particles. The zero-cross time method, fast and ...Three pulse-shape-discrimination (PSD) methods are applied to study the particle identification (PID) by using CsI(Tl) crystal, especially for identifying light charged particles. The zero-cross time method, fast and total component method and signal rise time method are used. The experiment, data analysis and results are compared. Good PID for p, α and γ can be achieved with a CsI(Tl)-photomultiplier assembly.展开更多
JUNA(Jinping Underground laboratory for Nuclear Astrophysics)is planing to measure the 13C(α,n)16O and some other important reactions at or close to stellar energies using intense helium beam out of an ECR driven acc...JUNA(Jinping Underground laboratory for Nuclear Astrophysics)is planing to measure the 13C(α,n)16O and some other important reactions at or close to stellar energies using intense helium beam out of an ECR driven accelerator in Jinping Underground laboratory[1].Deuterium impurity in ion source will produces significant amount of neutrons,limiting the background level.To control the deterium impurity,we have developed a method to measure the deuterium impurity within Helium beam using the d(d,p)t reaction.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Three pulse-shape-discrimination (PSD) methods are applied to study the particle identification (PID) by using CsI(Tl) crystal, especially for identifying light charged particles. The zero-cross time method, fast and total component method and signal rise time method are used. The experiment, data analysis and results are compared. Good PID for p, α and γ can be achieved with a CsI(Tl)-photomultiplier assembly.
基金National Natural Science Foundation of China(11490564).
文摘JUNA(Jinping Underground laboratory for Nuclear Astrophysics)is planing to measure the 13C(α,n)16O and some other important reactions at or close to stellar energies using intense helium beam out of an ECR driven accelerator in Jinping Underground laboratory[1].Deuterium impurity in ion source will produces significant amount of neutrons,limiting the background level.To control the deterium impurity,we have developed a method to measure the deuterium impurity within Helium beam using the d(d,p)t reaction.
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.
