Study On Performance Of H12700A Multi-Anode Position Sensitive Detector

In experimental nuclear physics,we need to use a variety of detector combinations to accomplish the experimental objectives,and some mature detection techniques have been formed.For example,in the Radioactive Ion Beam Line in Lanzhou(RIBLL)experimental terminal,a parallel plate avalanche counter(PPAC)detector is used to detect the beam position;the Time of Flight(TOF)starts to be placed in the T1 target chamber,and the detector is placed in the T2 target.Indoor,used to measure beam flight time;Si detector is placed in the T2 target chamber to detect energy loss information of particles;8×8 array CsI(Tl)crystal detector is placed in the large target chamber for detecting experiments Cracking product?The 8×8 array CsI(Tl)crystal detectors occupy a large volume,and need to connect 64high-voltage power lines and 64 signal lines respectively to make them work normally.In the preparation process of the experiment,due to its electronic construction The noise reduction problem has always been a problem;in the subsequent experimental data analysis,its energy scale also takes a lot of time.Therefore,this paper selects the multi-anode position-sensitive photomultiplier tubes(PSPMT)H12700A produced by Hamamatsu,Japan,and the CsI(Tl)produced by the crystal group of the Institute of Modern Physics of the Chinese Academy of Sciences to form a new detector,which is more H12700 A.The performance of the anode position sensitive photomultiplier tube is studied,which provides a certain reference value for selecting new detectors for related experiments.The experiment was carried out on the Radioactive Ion Beam Line in Lanzhou(RIBLL)experimental terminal on March 18,2018.The main beam was 75.5 MeV/u of 28 Si,and then reacted with the primary target to generate secondary debris.The selection of four secondary magnets on the RIBLL,the identification and screening of secondary beam particles by the?E-TOF-B? detector system,and the tracking of the secondary beam by the first three PPAC detectors in the secondary target.Determine the position information and direction information of the beam.After selection,the 18 G,19F,15C-based secondary beam bombards three unpowered PPACs,and the final cracked product bombards the H12700 A multi-anode position sensitive detector.The data analysis obtained by the experiment is processed by C++ language programming based on ROOT software.By reading the energy integration reading of each detector's signal,the charge is integrated,so as to analyze the energy integral and charge integral of the whole detector,and successfully identify several light particles by using the CsI(Tl)fast and slow component.Thereby completing the performance study of the H12700 A detector.