Implementation of a double trigger condition system based on charge comparison and TOF measurement for the NEDA detector array  

作　　者：J.M.Deltoro A.Goasduff F.J.Egea V.González A.Gadea R.M.Pérez-Vidal I.Lazarus M.Kogimtzis L.McNicholl M.Palacz G.Jaworski J.J.Valiente-Dobón J.Nyberg S.Casans A.E.Navarro-Antón E.Sanchis A.Boujrad E.Clément T.Hüyük R.Illicachi O.Stezowski V.Modamio 

机构地区：[1]Department of Electronic Engineering,University of Valencia,Burjassot,Valencia,Spain [2]Istituto Nazionale di Fisica Nucleare,Laboratori Nazionali di Legnaro,Laboratori Nazionali di Legnaro,Legnaro,Padova,Italy [3]Instituto de Física Corpuscular,CSIC-Universidad de Valencia,CSIC-Universidad de Valencia,46980 Paterna,Valencia,Spain [4]Science and Technology Facilities Council,Daresbury,UK [5]Heavy Ion Laboratory,University of Warsaw,02-093 Warsaw,Poland [6]Department of Physics and Astronomy,Uppsala University,Uppsala,Sweden [7]Grand Accélérateur National d’Ions Lourds(GANIL),CEA/DRF-CNRS/IN2P3,CEA/DRF-CNRS/IN2P3,Caen,France [8]Universitéde Lyon,UniversitéLyon-1,CNRS/IN2P3,UMR5822,IP2I,IP2I,4 Rue Enrico Fermi,69622 Villeurbanne Cedex,France [9]Department of Physics,University of Oslo,0316 Oslo,Norway

出　　处：《Nuclear Science and Techniques》2025年第2期40-48,共9页核技术(英文)

基　　金：supported by MICIU MCIN/AEI/10.13039/501100011033;Spain with Grant PID2020-118265GB-C42,-C44,PRTR-C17.I01;Generalitat Valenciana,Spain with Grant CIPROM/2022/54,ASFAE/2022/031,CIAPOS/2021/114 and by the EU NextGenerationEU,ESF funds.This work was also supported by the National Science Centre(NCN),Poland(Grant No.2020/39/D/ST2/00466).

摘　　要：The NEutron Detector Array(NEDA)is designed to be coupled to gamma-ray spectrometers to enhance the sensitivity of the setup by enabling reaction channel selection through counting of the evaporated neutrons.This article presents the implementation of a double trigger condition system for NEDA,which improves the acquisition of neutrons and reduces the number of gamma rays acquired.Two independent triggers are generated in the double trigger condition system:one based on charge comparison(CC)and the other on time-of-flight(TOF).These triggers can be combined using OR and AND logic,offering four distinct trigger modes.The developed firmware is added to the previous one in the Virtex 6 field programmable gate array(FPGA)present in the system,which also includes signal processing,baseline correction,and various trigger logic blocks.The performance of the trigger system is evaluated using data from the E703 experiment performed at GANIL.The four trigger modes are applied to the same data,and a subsequent offline analysis is performed.It is shown that most of the detected neutrons are preserved with the AND mode,and the total number of gamma rays is significantly reduced.Compared with the CC trigger mode,the OR trigger mode allows increasing the selection of neutrons.In addition,it is demonstrated that if the OR mode is selected,the online CC trigger threshold can be raised without losing neutrons.

关 键 词：Neutron detector Neutron-gamma discrimination Pulse shape analysis TIME-OF-FLIGHT Charge comparison 

分 类 号：X70[环境科学与工程—环境工程]