PT Journal
AU Modamio, V
   Valiente-Dobon, JJ
   Jaworski, G
   Huyuk, T
   Triossi, A
   Egea, J
   Di Nitto, A
   Soderstrom, PA
   Ros, JA
   de Angelis, G
   de France, G
   Erduran, MN
   Erturk, S
   Gadea, A
   Gonzalez, V
   Kownacki, J
   Moszynski, M
   Nyberg, J
   Palacz, M
   Sanchis, E
   Wadsworthm, R
TI Digital pulse-timing technique for the neutron detector array NEDA
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2015
BP 71
EP 76
VL 775
DI 10.1016/j.nima.2014.12.002
LA English
DE Digital timing; Constant fraction discriminator; Liquid scintillator; BC501A; Neutron detector; NEDA
AB A new digital pulse-timing algorithm, to be used with the future neutron detector array NEDA, has been developed and tested. The time resolution of four 5 in diameter photomultiplier tubes (XP4512, R4144, R11833-100, and ET9390-kb), coupled to a cylindrical 5 in by 5 in BC501A liquict scintillator detector was measured by employing digital sampling electronics and a constant fraction discriminator (CFD) algorithm. The zero crossing of the CM algorithm was obtained with a cubic spline interpolation, which was continuous up to the second derivative. The performance of the algorithm was studied at sampling rates of 500 MS/s and 200 MS/s. The time resolution obtained with the digital electronics was compared to the values acquired with a standard analog CFD. The result of this comparison shows that the time resolution from the analog and the digital measurements at 500 MS/s and at 200 MS/s are within 15% for all the tested photomultiplier tubes.
ER