Detector system for the angular distribution measurement of ¹²C + ¹²C elastic scattering at 200-400A ce:hsp>MeV

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• 作者：W.W. Qu^c ; G.L. Zhang^a ; ^b ; ^{zgl@buaa.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; S. Terashima^a ; ^b ; C.L. Guo^a ; ^b ; I. Tanihata^a ; ^b ; ^d ; X.Y. Le^a ; ^b ; T.F. Wang^a ; ^b ; X.H. Zhang^e ; Z.Y. Sun^e ; L.M. Duan^e ; R.J. Hu^e ; C.G. Lu^e ; P. Ma^e
• 关键词：Angular distribution ; Three-body force ; Detector system
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：1 October 2016
• 年：2016
• 卷：832
• 期：Complete
• 页码：243-248
• 全文大小：2385 K

文摘

To obtain the angular distributions of ¹²C + ¹²C elastic scatterings with the incident energies of 200–400A MeV for the study of three-body forces, a detector system was constructed at second Radioactive Ion Beam Line in Lanzhou (RIBLL2) of Institute of Modern Physics (IMP). This system was composed of five plastic scintillation detectors with two read-outs for each detector, a Multi Wire Proportional Chamber (MWPC) and a 4×4 CsI(Tl) array. The ¹²C beam with the incident energy of 200A MeV on a natural carbon target was used to test this detector system. It is found that the plastic scintillation detector can give the good energy loss ce?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S016890021630688X&_mathId=si0005.gif&_user=111111111&_pii=S016890021630688X&_rdoc=1&_issn=01689002&md5=09f2300087971564609c40bae3b6ca37" title="Click to view the MathML source">(ΔE)$\left(\mathrm{\Delta }\mathit{E}\right)$ and time of flight (TOF) signals, it can also reflect the position information of scattered ¹²C events. MWPC can precisely provide the trajectories of scattered particles. This system has a very good particle identification ability and can clearly distinguish the scattered ¹²C particles from the fragments. It can be used for the study of the three-body forces effect for high energy heavy-ion scattering.