Neutron measurements on Joint European Torus using an NE213 scintillator with digital pulse shape discrimination

被引:33
作者
Esposito, B
Bertalot, L
Marocco, D
Riva, M
Kaschuck, Y
Skopintsev, S
Zimbal, A
Reginatto, M
Schuhmacher, H
Adams, JM
Murari, A
机构
[1] CR Frascati, Assoc Euratom ENEA Fus, I-00044 Frascati, Italy
[2] TRINITI, Troitsk 142190, Moscow Region, Russia
[3] Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany
[4] Assoc Euratom UKAEA Fus, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England
[5] Assoc Euratom ENEA Fus, Consorzio RFX, I-35127 Padua, Italy
关键词
D O I
10.1063/1.1785278
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A digital pulse shape discrimination system (DPSD) has been used in conjunction with collimated NE213 scintillators for neutron spectroscopic measurements at high count rates (MHz range) in Joint European Torus discharges (DD and DT fueled, neutral beam injection and rf heated). The system, developed at ENEA-Frascati, is based on a commercial 200 MHz 12-bit analog to digital transient recorder card, which digitizes the direct output signal from the anode of a photomultiplier. Among the unique features of this DPSD system are the possibility of postexperiment data reprocessing, high count rate operation, and simultaneous neutron and gamma (gamma) spectroscopy. Separation between gamma and neutron (n) events is performed by means of dedicated software exploiting the charge comparison method; separate n and gamma pulse height distributions are obtained and an example of neutron spectrum unfolding is shown. Implications of the DPSD in future neutron diagnostic systems on large and next step tokamaks are discussed. (C) 2004 American Institute of Physics.
引用
收藏
页码:3550 / 3552
页数:3
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