| In order to investigate the mechanism of the spallation reactions, anexperimental setup, which aims to collect the nuclear data for the design of ADSspallation targets, is built at Proton-Induced SpAllation facility (PISA) terminal inInstitute of Modern Physics (IMP). The setup, which has an angular coverage of~0to~180°in the horizontal plane along the beam direction, composed of a beampick-up detector, light charged particle “ΔE-E†telescopes for the intermediatemass fragments measurement and neutron time-of-flight spectrometer. In ADS,spallation reactions occur in the proton-induced heavy-ion reactions at intermediateor high energies. Numerous neutrons and lighter charge particles (p，d，t，3He，4He)are ejected in the spallation process, which can cause significant radiation damage inthe material used for ADS and would influence the operation and maintenance of theaccelerator and facility. Therefore, detailed studies on the yield, energy spectrum andangular distribution of these neutrons and lighter charge particles are urgentlyrequired.In this thesis, a light charged particle spectroscopy is presented. Detailedintroduction for the beam pick-up detectors, energy loss detectors and CsI(Tl)detectors are made. The test results of CsI(Tl) detector using different standardradioactive sources (137Cs and60Co) are described. The effects of different selectionsof PMT, shaping time, bias and CsI(Tl) thickness on the energy resolution arediscussed. Aset of the “ΔE-E†telescopes has been tested online. In the test run,12C beams,provided by HIRFL-CSRm, with different incident energies were used to irradiatethe water target. The2D plot of ΔE-E and ΔE-Z spectra obtained from theexperimental data are presented. Meanwhile the results are compared with GEANTsimulations with QGSP_BERT physics list. A good identification of light chargedparticles is obtained from both the experiment and the simulation. At the same time,the experimental yields of charged particles are reasonably well reproduced. |
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